diff --git a/modules/openapi-generator/src/main/resources/csharp/ApiClient.mustache b/modules/openapi-generator/src/main/resources/csharp/ApiClient.mustache
index be918b9f0db..a63d1c2be9c 100644
--- a/modules/openapi-generator/src/main/resources/csharp/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp/ApiClient.mustache
@@ -109,7 +109,7 @@ namespace {{packageName}}.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -377,7 +377,7 @@ namespace {{packageName}}.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Client/ApiClient.cs
index 83177ada5dc..102b13d3043 100644
--- a/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -110,7 +110,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -377,7 +377,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Client/ApiClient.cs
index 28c149428ec..0aeff507af0 100644
--- a/samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/others/csharp-complex-files/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -110,7 +110,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -377,7 +377,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/net4.7/MultipleFrameworks/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/net4.7/MultipleFrameworks/src/Org.OpenAPITools/Client/ApiClient.cs
index b4c183d7331..03ca8ae6772 100644
--- a/samples/client/petstore/csharp/restsharp/net4.7/MultipleFrameworks/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/net4.7/MultipleFrameworks/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -111,7 +111,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -378,7 +378,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/net4.7/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/net4.7/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
index 76307fd39ac..87b0c326b40 100644
--- a/samples/client/petstore/csharp/restsharp/net4.7/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/net4.7/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -111,7 +111,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -378,7 +378,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/net4.8/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/net4.8/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
index 76307fd39ac..87b0c326b40 100644
--- a/samples/client/petstore/csharp/restsharp/net4.8/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/net4.8/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -111,7 +111,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -378,7 +378,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/net6/ParameterMappings/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/net6/ParameterMappings/src/Org.OpenAPITools/Client/ApiClient.cs
index 9fc32256623..3d9a7633485 100644
--- a/samples/client/petstore/csharp/restsharp/net6/ParameterMappings/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/net6/ParameterMappings/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -109,7 +109,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -376,7 +376,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/net7/EnumMappings/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/net7/EnumMappings/src/Org.OpenAPITools/Client/ApiClient.cs
index ca7c3baede5..2dafc1eb4bf 100644
--- a/samples/client/petstore/csharp/restsharp/net7/EnumMappings/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/net7/EnumMappings/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -110,7 +110,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -377,7 +377,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/net7/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/net7/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
index ca7c3baede5..2dafc1eb4bf 100644
--- a/samples/client/petstore/csharp/restsharp/net7/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/net7/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -110,7 +110,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -377,7 +377,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/net7/UseDateTimeForDate/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/net7/UseDateTimeForDate/src/Org.OpenAPITools/Client/ApiClient.cs
index fd06cb542a1..5b7eea89e74 100644
--- a/samples/client/petstore/csharp/restsharp/net7/UseDateTimeForDate/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/net7/UseDateTimeForDate/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -109,7 +109,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -376,7 +376,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/standard2.0/ConditionalSerialization/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/standard2.0/ConditionalSerialization/src/Org.OpenAPITools/Client/ApiClient.cs
index 76307fd39ac..87b0c326b40 100644
--- a/samples/client/petstore/csharp/restsharp/standard2.0/ConditionalSerialization/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/standard2.0/ConditionalSerialization/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -111,7 +111,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -378,7 +378,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }
diff --git a/samples/client/petstore/csharp/restsharp/standard2.0/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp/restsharp/standard2.0/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
index 76307fd39ac..87b0c326b40 100644
--- a/samples/client/petstore/csharp/restsharp/standard2.0/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp/restsharp/standard2.0/Petstore/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -111,7 +111,7 @@ namespace Org.OpenAPITools.Client
                 if (response.Headers != null)
                 {
                     var filePath = string.IsNullOrEmpty(_configuration.TempFolderPath)
-                        ? Path.GetTempPath()
+                        ? global::System.IO.Path.GetTempPath()
                         : _configuration.TempFolderPath;
                     var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                     foreach (var header in response.Headers)
@@ -378,7 +378,7 @@ namespace Org.OpenAPITools.Client
                         var bytes = ClientUtils.ReadAsBytes(file);
                         var fileStream = file as FileStream;
                         if (fileStream != null)
-                            request.AddFile(fileParam.Key, bytes, Path.GetFileName(fileStream.Name));
+                            request.AddFile(fileParam.Key, bytes, global::System.IO.Path.GetFileName(fileStream.Name));
                         else
                             request.AddFile(fileParam.Key, bytes, "no_file_name_provided");
                     }