[csharp] Fix getModelFromParameter (#18137)

* fix getModelFromParameter

* minor fix

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java

@@ -1122,7 +1122,7 @@ public abstract class AbstractCSharpCodegen extends DefaultCodegen implements Co
      * Returns the model related to the given parameter
      */
     private CodegenModel getModelFromParameter(List<ModelMap> allModels, CodegenParameter parameter) {
-        return parameter.isModel
+        return parameter.isModel || parameter.getIsEnumOrRef()
                 ? allModels.stream().map(m -> m.getModel()).filter(m -> m.getClassname().equals(parameter.dataType)).findFirst().orElse(null)
                 : null;
     }

modules/openapi-generator/src/test/resources/3_0/aspnetcore/petstore.yaml

@@ -18,6 +18,18 @@ tags:
   - name: user
     description: Operations about user
 paths:
+  /test:
+    get:
+      summary: Test API
+      parameters:
+        - in: query
+          name: testQuery
+          schema:
+            $ref: '#/components/schemas/TestEnum'
+          required: false
+      responses:
+        '200':
+          description: OK
   /pet:
     post:
       tags:
@@ -620,6 +632,11 @@ components:
       name: api_key
       in: header
   schemas:
+    TestEnum:
+      type: string
+      enum:
+        - A
+        - B
     Order:
       title: Pet Order
       description: An order for a pets from the pet store

samples/client/echo_api/csharp-restsharp/docs/PathApi.md

@@ -34,7 +34,7 @@ namespace Example
             var pathString = "pathString_example";  // string | 
             var pathInteger = 56;  // int | 
             var enumNonrefStringPath = "success";  // string | 
-            var enumRefStringPath = new StringEnumRef(); // StringEnumRef | 
+            var enumRefStringPath = (StringEnumRef) "success";  // StringEnumRef | 
 
             try
             {
@@ -80,7 +80,7 @@ catch (ApiException e)
 | **pathString** | **string** |  |  |
 | **pathInteger** | **int** |  |  |
 | **enumNonrefStringPath** | **string** |  |  |
-| **enumRefStringPath** | [**StringEnumRef**](StringEnumRef.md) |  |  |
+| **enumRefStringPath** | **StringEnumRef** |  |  |
 
 ### Return type
 

samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Api/PathApi.cs

@@ -256,12 +256,6 @@ namespace Org.OpenAPITools.Api
                 throw new Org.OpenAPITools.Client.ApiException(400, "Missing required parameter 'enumNonrefStringPath' when calling PathApi->TestsPathStringPathStringIntegerPathIntegerEnumNonrefStringPathEnumRefStringPath");
             }
 
-            // verify the required parameter 'enumRefStringPath' is set
-            if (enumRefStringPath == null)
-            {
-                throw new Org.OpenAPITools.Client.ApiException(400, "Missing required parameter 'enumRefStringPath' when calling PathApi->TestsPathStringPathStringIntegerPathIntegerEnumNonrefStringPathEnumRefStringPath");
-            }
-
             Org.OpenAPITools.Client.RequestOptions localVarRequestOptions = new Org.OpenAPITools.Client.RequestOptions();
 
             string[] _contentTypes = new string[] {
@@ -349,12 +343,6 @@ namespace Org.OpenAPITools.Api
                 throw new Org.OpenAPITools.Client.ApiException(400, "Missing required parameter 'enumNonrefStringPath' when calling PathApi->TestsPathStringPathStringIntegerPathIntegerEnumNonrefStringPathEnumRefStringPath");
             }
 
-            // verify the required parameter 'enumRefStringPath' is set
-            if (enumRefStringPath == null)
-            {
-                throw new Org.OpenAPITools.Client.ApiException(400, "Missing required parameter 'enumRefStringPath' when calling PathApi->TestsPathStringPathStringIntegerPathIntegerEnumNonrefStringPathEnumRefStringPath");
-            }
-
 
             Org.OpenAPITools.Client.RequestOptions localVarRequestOptions = new Org.OpenAPITools.Client.RequestOptions();
 

samples/client/others/csharp-complex-files/docs/MultipartApi.md

@@ -118,7 +118,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://localhost";
             var apiInstance = new MultipartApi(config);
-            var status = new MultipartMixedStatus(); // MultipartMixedStatus | 
+            var status = (MultipartMixedStatus) "ALLOWED";  // MultipartMixedStatus | 
             var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | a file
             var marker = new MultipartMixedRequestMarker(); // MultipartMixedRequestMarker |  (optional) 
             var statusArray = new List<MultipartMixedStatus>(); // List<MultipartMixedStatus> |  (optional) 
@@ -158,7 +158,7 @@ catch (ApiException e)
 
 | Name | Type | Description | Notes |
 |------|------|-------------|-------|
-| **status** | [**MultipartMixedStatus**](MultipartMixedStatus.md) |  |  |
+| **status** | **MultipartMixedStatus** |  |  |
 | **file** | **System.IO.Stream****System.IO.Stream** | a file |  |
 | **marker** | [**MultipartMixedRequestMarker**](MultipartMixedRequestMarker.md) |  | [optional]  |
 | **statusArray** | [**List&lt;MultipartMixedStatus&gt;**](MultipartMixedStatus.md) |  | [optional]  |

samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Api/MultipartApi.cs

@@ -480,12 +480,6 @@ namespace Org.OpenAPITools.Api
         /// <returns>ApiResponse of Object(void)</returns>
         public Org.OpenAPITools.Client.ApiResponse<Object> MultipartMixedWithHttpInfo(MultipartMixedStatus status, System.IO.Stream file, MultipartMixedRequestMarker marker = default(MultipartMixedRequestMarker), List<MultipartMixedStatus> statusArray = default(List<MultipartMixedStatus>), int operationIndex = 0)
         {
-            // verify the required parameter 'status' is set
-            if (status == null)
-            {
-                throw new Org.OpenAPITools.Client.ApiException(400, "Missing required parameter 'status' when calling MultipartApi->MultipartMixed");
-            }
-
             // verify the required parameter 'file' is set
             if (file == null)
             {
@@ -514,7 +508,7 @@ namespace Org.OpenAPITools.Api
                 localVarRequestOptions.HeaderParameters.Add("Accept", localVarAccept);
             }
 
-            localVarRequestOptions.FormParameters.Add("status", Org.OpenAPITools.Client.ClientUtils.Serialize(status)); // form parameter
+            localVarRequestOptions.FormParameters.Add("status", Org.OpenAPITools.Client.ClientUtils.ParameterToString(status)); // form parameter
             if (marker != null)
             {
                 localVarRequestOptions.FormParameters.Add("marker", Org.OpenAPITools.Client.ClientUtils.Serialize(marker)); // form parameter
@@ -572,12 +566,6 @@ namespace Org.OpenAPITools.Api
         /// <returns>Task of ApiResponse</returns>
         public async System.Threading.Tasks.Task<Org.OpenAPITools.Client.ApiResponse<Object>> MultipartMixedWithHttpInfoAsync(MultipartMixedStatus status, System.IO.Stream file, MultipartMixedRequestMarker marker = default(MultipartMixedRequestMarker), List<MultipartMixedStatus> statusArray = default(List<MultipartMixedStatus>), int operationIndex = 0, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken))
         {
-            // verify the required parameter 'status' is set
-            if (status == null)
-            {
-                throw new Org.OpenAPITools.Client.ApiException(400, "Missing required parameter 'status' when calling MultipartApi->MultipartMixed");
-            }
-
             // verify the required parameter 'file' is set
             if (file == null)
             {
@@ -607,7 +595,7 @@ namespace Org.OpenAPITools.Api
                 localVarRequestOptions.HeaderParameters.Add("Accept", localVarAccept);
             }
 
-            localVarRequestOptions.FormParameters.Add("status", Org.OpenAPITools.Client.ClientUtils.Serialize(status)); // form parameter
+            localVarRequestOptions.FormParameters.Add("status", Org.OpenAPITools.Client.ClientUtils.ParameterToString(status)); // form parameter
             if (marker != null)
             {
                 localVarRequestOptions.FormParameters.Add("marker", Org.OpenAPITools.Client.ClientUtils.Serialize(marker)); // form parameter

samples/server/petstore/aspnetcore-3.0/.openapi-generator/FILES

@@ -5,6 +5,7 @@ build.sh
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs
@@ -22,6 +23,7 @@ src/Org.OpenAPITools/Models/Dog.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
+src/Org.OpenAPITools/Models/TestEnum.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Program.cs

samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,49 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Swashbuckle.AspNetCore.Annotations;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        [SwaggerOperation("TestGet")]
+        public virtual IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery)
+        {
+
+            //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
+            // return StatusCode(200);
+
+            throw new NotImplementedException();
+        }
+    }
+}

samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/Models/TestEnum.cs

@@ -0,0 +1,43 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        [TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
+        [JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-3.0/src/Org.OpenAPITools/wwwroot/openapi-original.json

@@ -27,6 +27,26 @@
     "name" : "user"
   } ],
   "paths" : {
+    "/test" : {
+      "get" : {
+        "parameters" : [ {
+          "explode" : true,
+          "in" : "query",
+          "name" : "testQuery",
+          "required" : false,
+          "schema" : {
+            "$ref" : "#/components/schemas/TestEnum"
+          },
+          "style" : "form"
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "OK"
+          }
+        },
+        "summary" : "Test API"
+      }
+    },
     "/pet" : {
       "post" : {
         "description" : "",
@@ -828,6 +848,10 @@
       }
     },
     "schemas" : {
+      "TestEnum" : {
+        "enum" : [ "A", "B" ],
+        "type" : "string"
+      },
       "Order" : {
         "description" : "An order for a pets from the pet store",
         "example" : {

samples/server/petstore/aspnetcore-3.1/.openapi-generator/FILES

@@ -5,6 +5,7 @@ build.sh
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs
@@ -22,6 +23,7 @@ src/Org.OpenAPITools/Models/Dog.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
+src/Org.OpenAPITools/Models/TestEnum.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Program.cs

samples/server/petstore/aspnetcore-3.1/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,49 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Swashbuckle.AspNetCore.Annotations;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        [SwaggerOperation("TestGet")]
+        public virtual IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery)
+        {
+
+            //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
+            // return StatusCode(200);
+
+            throw new NotImplementedException();
+        }
+    }
+}

samples/server/petstore/aspnetcore-3.1/src/Org.OpenAPITools/Models/TestEnum.cs

@@ -0,0 +1,43 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        [TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
+        [JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-3.1/src/Org.OpenAPITools/wwwroot/openapi-original.json

@@ -27,6 +27,26 @@
     "name" : "user"
   } ],
   "paths" : {
+    "/test" : {
+      "get" : {
+        "parameters" : [ {
+          "explode" : true,
+          "in" : "query",
+          "name" : "testQuery",
+          "required" : false,
+          "schema" : {
+            "$ref" : "#/components/schemas/TestEnum"
+          },
+          "style" : "form"
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "OK"
+          }
+        },
+        "summary" : "Test API"
+      }
+    },
     "/pet" : {
       "post" : {
         "description" : "",
@@ -828,6 +848,10 @@
       }
     },
     "schemas" : {
+      "TestEnum" : {
+        "enum" : [ "A", "B" ],
+        "type" : "string"
+      },
       "Order" : {
         "description" : "An order for a pets from the pet store",
         "example" : {

samples/server/petstore/aspnetcore-5.0/.openapi-generator/FILES

@@ -5,6 +5,7 @@ build.sh
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs
@@ -22,6 +23,7 @@ src/Org.OpenAPITools/Models/Dog.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
+src/Org.OpenAPITools/Models/TestEnum.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Program.cs

samples/server/petstore/aspnetcore-5.0/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,49 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Swashbuckle.AspNetCore.Annotations;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        [SwaggerOperation("TestGet")]
+        public virtual IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery)
+        {
+
+            //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
+            // return StatusCode(200);
+
+            throw new NotImplementedException();
+        }
+    }
+}

samples/server/petstore/aspnetcore-5.0/src/Org.OpenAPITools/Models/TestEnum.cs

@@ -0,0 +1,43 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        [TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
+        [JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-5.0/src/Org.OpenAPITools/wwwroot/openapi-original.json

@@ -27,6 +27,26 @@
     "name" : "user"
   } ],
   "paths" : {
+    "/test" : {
+      "get" : {
+        "parameters" : [ {
+          "explode" : true,
+          "in" : "query",
+          "name" : "testQuery",
+          "required" : false,
+          "schema" : {
+            "$ref" : "#/components/schemas/TestEnum"
+          },
+          "style" : "form"
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "OK"
+          }
+        },
+        "summary" : "Test API"
+      }
+    },
     "/pet" : {
       "post" : {
         "description" : "",
@@ -828,6 +848,10 @@
       }
     },
     "schemas" : {
+      "TestEnum" : {
+        "enum" : [ "A", "B" ],
+        "type" : "string"
+      },
       "Order" : {
         "description" : "An order for a pets from the pet store",
         "example" : {

samples/server/petstore/aspnetcore-6.0-NewtonsoftFalse/.openapi-generator/FILES

@@ -5,6 +5,7 @@ build.sh
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs
@@ -22,6 +23,7 @@ src/Org.OpenAPITools/Models/Dog.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
+src/Org.OpenAPITools/Models/TestEnum.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Org.OpenAPITools.csproj

samples/server/petstore/aspnetcore-6.0-NewtonsoftFalse/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,49 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Swashbuckle.AspNetCore.Annotations;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using System.Text.Json;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        [SwaggerOperation("TestGet")]
+        public virtual IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery)
+        {
+
+            //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
+            // return StatusCode(200);
+
+            throw new NotImplementedException();
+        }
+    }
+}

samples/server/petstore/aspnetcore-6.0-NewtonsoftFalse/src/Org.OpenAPITools/Models/TestEnum.cs

@@ -0,0 +1,42 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using System.Text.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-6.0-NewtonsoftFalse/src/Org.OpenAPITools/wwwroot/openapi-original.json

@@ -27,6 +27,26 @@
     "name" : "user"
   } ],
   "paths" : {
+    "/test" : {
+      "get" : {
+        "parameters" : [ {
+          "explode" : true,
+          "in" : "query",
+          "name" : "testQuery",
+          "required" : false,
+          "schema" : {
+            "$ref" : "#/components/schemas/TestEnum"
+          },
+          "style" : "form"
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "OK"
+          }
+        },
+        "summary" : "Test API"
+      }
+    },
     "/pet" : {
       "post" : {
         "description" : "",
@@ -828,6 +848,10 @@
       }
     },
     "schemas" : {
+      "TestEnum" : {
+        "enum" : [ "A", "B" ],
+        "type" : "string"
+      },
       "Order" : {
         "description" : "An order for a pets from the pet store",
         "example" : {

samples/server/petstore/aspnetcore-6.0-nullableReferenceTypes/.openapi-generator/FILES

@@ -5,6 +5,7 @@ build.sh
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs
@@ -22,6 +23,7 @@ src/Org.OpenAPITools/Models/Dog.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
+src/Org.OpenAPITools/Models/TestEnum.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Org.OpenAPITools.csproj

samples/server/petstore/aspnetcore-6.0-nullableReferenceTypes/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,49 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Swashbuckle.AspNetCore.Annotations;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        [SwaggerOperation("TestGet")]
+        public virtual IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery)
+        {
+
+            //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
+            // return StatusCode(200);
+
+            throw new NotImplementedException();
+        }
+    }
+}

samples/server/petstore/aspnetcore-6.0-nullableReferenceTypes/src/Org.OpenAPITools/Models/TestEnum.cs

@@ -0,0 +1,43 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        [TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
+        [JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-6.0-nullableReferenceTypes/src/Org.OpenAPITools/wwwroot/openapi-original.json

@@ -27,6 +27,26 @@
     "name" : "user"
   } ],
   "paths" : {
+    "/test" : {
+      "get" : {
+        "parameters" : [ {
+          "explode" : true,
+          "in" : "query",
+          "name" : "testQuery",
+          "required" : false,
+          "schema" : {
+            "$ref" : "#/components/schemas/TestEnum"
+          },
+          "style" : "form"
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "OK"
+          }
+        },
+        "summary" : "Test API"
+      }
+    },
     "/pet" : {
       "post" : {
         "description" : "",
@@ -828,6 +848,10 @@
       }
     },
     "schemas" : {
+      "TestEnum" : {
+        "enum" : [ "A", "B" ],
+        "type" : "string"
+      },
       "Order" : {
         "description" : "An order for a pets from the pet store",
         "example" : {

samples/server/petstore/aspnetcore-6.0-pocoModels/.openapi-generator/FILES

@@ -5,6 +5,7 @@ build.sh
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs
@@ -22,6 +23,7 @@ src/Org.OpenAPITools/Models/Dog.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
+src/Org.OpenAPITools/Models/TestEnum.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Org.OpenAPITools.csproj

samples/server/petstore/aspnetcore-6.0-pocoModels/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,49 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Swashbuckle.AspNetCore.Annotations;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        [SwaggerOperation("TestGet")]
+        public virtual IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery)
+        {
+
+            //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
+            // return StatusCode(200);
+
+            throw new NotImplementedException();
+        }
+    }
+}

samples/server/petstore/aspnetcore-6.0-pocoModels/src/Org.OpenAPITools/Models/TestEnum.cs

@@ -0,0 +1,43 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        [TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
+        [JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-6.0-pocoModels/src/Org.OpenAPITools/wwwroot/openapi-original.json

@@ -27,6 +27,26 @@
     "name" : "user"
   } ],
   "paths" : {
+    "/test" : {
+      "get" : {
+        "parameters" : [ {
+          "explode" : true,
+          "in" : "query",
+          "name" : "testQuery",
+          "required" : false,
+          "schema" : {
+            "$ref" : "#/components/schemas/TestEnum"
+          },
+          "style" : "form"
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "OK"
+          }
+        },
+        "summary" : "Test API"
+      }
+    },
     "/pet" : {
       "post" : {
         "description" : "",
@@ -828,6 +848,10 @@
       }
     },
     "schemas" : {
+      "TestEnum" : {
+        "enum" : [ "A", "B" ],
+        "type" : "string"
+      },
       "Order" : {
         "description" : "An order for a pets from the pet store",
         "example" : {

samples/server/petstore/aspnetcore-6.0-project4Models/.openapi-generator/FILES

@@ -13,10 +13,12 @@ src/Org.OpenAPITools.Models/Order.cs
 src/Org.OpenAPITools.Models/Org.OpenAPITools.Models.csproj
 src/Org.OpenAPITools.Models/Pet.cs
 src/Org.OpenAPITools.Models/Tag.cs
+src/Org.OpenAPITools.Models/TestEnum.cs
 src/Org.OpenAPITools.Models/User.cs
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs

samples/server/petstore/aspnetcore-6.0-project4Models/src/Org.OpenAPITools.Models/TestEnum.cs

@@ -0,0 +1,43 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        [TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
+        [JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-6.0-project4Models/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,49 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Swashbuckle.AspNetCore.Annotations;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        [SwaggerOperation("TestGet")]
+        public virtual IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery)
+        {
+
+            //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
+            // return StatusCode(200);
+
+            throw new NotImplementedException();
+        }
+    }
+}

samples/server/petstore/aspnetcore-6.0-project4Models/src/Org.OpenAPITools/wwwroot/openapi-original.json

@@ -27,6 +27,26 @@
     "name" : "user"
   } ],
   "paths" : {
+    "/test" : {
+      "get" : {
+        "parameters" : [ {
+          "explode" : true,
+          "in" : "query",
+          "name" : "testQuery",
+          "required" : false,
+          "schema" : {
+            "$ref" : "#/components/schemas/TestEnum"
+          },
+          "style" : "form"
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "OK"
+          }
+        },
+        "summary" : "Test API"
+      }
+    },
     "/pet" : {
       "post" : {
         "description" : "",
@@ -828,6 +848,10 @@
       }
     },
     "schemas" : {
+      "TestEnum" : {
+        "enum" : [ "A", "B" ],
+        "type" : "string"
+      },
       "Order" : {
         "description" : "An order for a pets from the pet store",
         "example" : {

samples/server/petstore/aspnetcore-6.0-useSwashBuckle/.openapi-generator/FILES

@@ -5,6 +5,7 @@ build.sh
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs
@@ -19,6 +20,7 @@ src/Org.OpenAPITools/Models/Dog.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
+src/Org.OpenAPITools/Models/TestEnum.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Org.OpenAPITools.csproj

samples/server/petstore/aspnetcore-6.0-useSwashBuckle/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,38 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public abstract class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        public abstract IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery);
+    }
+}

samples/server/petstore/aspnetcore-6.0-useSwashBuckle/src/Org.OpenAPITools/Models/TestEnum.cs

@@ -0,0 +1,43 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        [TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
+        [JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-6.0/.openapi-generator/FILES

@@ -5,6 +5,7 @@ build.sh
 src/Org.OpenAPITools/.gitignore
 src/Org.OpenAPITools/Attributes/ValidateModelStateAttribute.cs
 src/Org.OpenAPITools/Authentication/ApiAuthentication.cs
+src/Org.OpenAPITools/Controllers/DefaultApi.cs
 src/Org.OpenAPITools/Controllers/FakeApi.cs
 src/Org.OpenAPITools/Controllers/PetApi.cs
 src/Org.OpenAPITools/Controllers/StoreApi.cs
@@ -22,6 +23,7 @@ src/Org.OpenAPITools/Models/Dog.cs
 src/Org.OpenAPITools/Models/Order.cs
 src/Org.OpenAPITools/Models/Pet.cs
 src/Org.OpenAPITools/Models/Tag.cs
+src/Org.OpenAPITools/Models/TestEnum.cs
 src/Org.OpenAPITools/Models/User.cs
 src/Org.OpenAPITools/OpenApi/TypeExtensions.cs
 src/Org.OpenAPITools/Org.OpenAPITools.csproj

samples/server/petstore/aspnetcore-6.0/src/Org.OpenAPITools/Controllers/DefaultApi.cs

@@ -0,0 +1,49 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Http;
+using Swashbuckle.AspNetCore.Annotations;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Attributes;
+using Org.OpenAPITools.Models;
+
+namespace Org.OpenAPITools.Controllers
+{ 
+    /// <summary>
+    /// 
+    /// </summary>
+    [ApiController]
+    public class DefaultApiController : ControllerBase
+    { 
+        /// <summary>
+        /// Test API
+        /// </summary>
+        /// <param name="testQuery"></param>
+        /// <response code="200">OK</response>
+        [HttpGet]
+        [Route("/v2/test")]
+        [ValidateModelState]
+        [SwaggerOperation("TestGet")]
+        public virtual IActionResult TestGet([FromQuery (Name = "testQuery")]TestEnum? testQuery)
+        {
+
+            //TODO: Uncomment the next line to return response 200 or use other options such as return this.NotFound(), return this.BadRequest(..), ...
+            // return StatusCode(200);
+
+            throw new NotImplementedException();
+        }
+    }
+}

samples/server/petstore/aspnetcore-6.0/src/Org.OpenAPITools/Models/TestEnum.cs

@@ -0,0 +1,43 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+using System;
+using System.Linq;
+using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Org.OpenAPITools.Converters;
+
+namespace Org.OpenAPITools.Models
+{ 
+        /// <summary>
+        /// Gets or Sets TestEnum
+        /// </summary>
+        [TypeConverter(typeof(CustomEnumConverter<TestEnum>))]
+        [JsonConverter(typeof(Newtonsoft.Json.Converters.StringEnumConverter))]
+        public enum TestEnum
+        {
+            
+            /// <summary>
+            /// Enum AEnum for A
+            /// </summary>
+            [EnumMember(Value = "A")]
+            AEnum = 1,
+            
+            /// <summary>
+            /// Enum BEnum for B
+            /// </summary>
+            [EnumMember(Value = "B")]
+            BEnum = 2
+        }
+}

samples/server/petstore/aspnetcore-6.0/src/Org.OpenAPITools/wwwroot/openapi-original.json

@@ -27,6 +27,26 @@
     "name" : "user"
   } ],
   "paths" : {
+    "/test" : {
+      "get" : {
+        "parameters" : [ {
+          "explode" : true,
+          "in" : "query",
+          "name" : "testQuery",
+          "required" : false,
+          "schema" : {
+            "$ref" : "#/components/schemas/TestEnum"
+          },
+          "style" : "form"
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "OK"
+          }
+        },
+        "summary" : "Test API"
+      }
+    },
     "/pet" : {
       "post" : {
         "description" : "",
@@ -828,6 +848,10 @@
       }
     },
     "schemas" : {
+      "TestEnum" : {
+        "enum" : [ "A", "B" ],
+        "type" : "string"
+      },
       "Order" : {
         "description" : "An order for a pets from the pet store",
         "example" : {