update C# ParamterToString to support array of object, add test case

samples/client/petstore/csharp/SwaggerClientTest/Lib/SwaggerClient/src/main/csharp/IO/Swagger/Client/ApiClient.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Text.RegularExpressions;
@@ -189,7 +190,7 @@ namespace IO.Swagger.Client
     
         /// <summary>
         /// If parameter is DateTime, output in ISO8601 format.
-        /// If parameter is a list of string, join the list with ",".
+        /// If parameter is a list, join the list with ",".
         /// Otherwise just return the string.
         /// </summary>
         /// <param name="obj">The parameter (header, path, query, form).</param>
@@ -198,8 +199,14 @@ namespace IO.Swagger.Client
         {
             if (obj is DateTime)
                 return ((DateTime)obj).ToString ("u");
-            else if (obj is List<string>)
-                return String.Join(",", obj as List<string>);
+            else if (obj is IList) {
+                string flattenString = "";
+                string separator = ",";
+                foreach (var param in (IList)obj) {
+                    flattenString += param.ToString() + separator;
+                }
+                return flattenString.Remove(flattenString.Length - 1);;
+            }
             else
                 return Convert.ToString (obj);
         }

samples/client/petstore/csharp/SwaggerClientTest/SwaggerClientTest.csproj

@@ -55,6 +55,7 @@
     <Compile Include="Lib\SwaggerClient\src\main\csharp\IO\Swagger\Model\Tag.cs" />
     <Compile Include="Lib\SwaggerClient\src\main\csharp\IO\Swagger\Model\User.cs" />
     <Compile Include="TestPet.cs" />
+    <Compile Include="TestApiClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>

samples/client/petstore/csharp/SwaggerClientTest/TestApiClient.cs

@@ -0,0 +1,26 @@
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using IO.Swagger.Client;
+
+namespace SwaggerClient.TestApiClient
+{
+	public class TestApiClient
+	{
+		[Test ()]
+		public void TestParameterToString ()
+		{	
+			ApiClient api = new ApiClient ();
+
+			// test array of string
+			List<string> statusList = new List<String>(new String[] {"available", "sold"});
+			Assert.AreEqual("available,sold", api.ParameterToString (statusList));
+
+			// test array of int
+			List<int> numList = new List<int>(new int[] {1, 37});
+			Assert.AreEqual("1,37", api.ParameterToString (numList));
+		}
+
+	}
+}
+

samples/client/petstore/csharp/SwaggerClientTest/obj/Debug/SwaggerClientTest.csproj.FilesWrittenAbsolute.txt

@@ -1,8 +1,8 @@
 /Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/obj/Debug/.NETFramework,Version=v4.5.AssemblyAttribute.cs
+/Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/Newtonsoft.Json.dll
+/Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/nunit.framework.dll
+/Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/RestSharp.dll
 /Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/SwaggerClientTest.dll.mdb
 /Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/SwaggerClientTest.dll
 /Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/obj/Debug/SwaggerClientTest.dll
 /Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/obj/Debug/SwaggerClientTest.dll.mdb
-/Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/Newtonsoft.Json.dll
-/Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/RestSharp.dll
-/Users/williamcheng/Code/swagger-codegen/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/nunit.framework.dll