OpenAPITools · devhl-labs · Jun 22, 2025
diff --git a/modules/openapi-generator/src/main/resources/csharp/libraries/generichost/api.mustache b/modules/openapi-generator/src/main/resources/csharp/libraries/generichost/api.mustache
@@ -473,8 +473,11 @@ namespace {{packageName}}.{{apiPackage}}
 
                     List<KeyValuePair<string{{nrt?}}, string{{nrt?}}>> formParameterLocalVars = new List<KeyValuePair<string{{nrt?}}, string{{nrt?}}>>();
 
-                    multipartContentLocalVar.Add(new FormUrlEncodedContent(formParameterLocalVars));{{/-first}}{{^isFile}}{{#required}}
+                    multipartContentLocalVar.Add(new FormUrlEncodedContent(formParameterLocalVars));
 
+                    {{/-first}}
+                    {{^isFile}}
+                    {{#required}}
                     formParameterLocalVars.Add(new KeyValuePair<string{{nrt?}}, string{{nrt?}}>("{{baseName}}", ClientUtils.ParameterToString({{paramName}})));
 
                     {{/required}}
@@ -486,13 +489,41 @@ namespace {{packageName}}.{{apiPackage}}
                     {{/isFile}}
                     {{#isFile}}
                     {{#required}}
+                    {{#isContainer}}
+                    foreach (global::System.IO.Stream streamLocalVar in {{paramName}})
+                    {
+                        global::System.Net.Http.StreamContent streamContentLocalVar = new global::System.Net.Http.StreamContent(streamLocalVar);
+                        streamContentLocalVar.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
+                        {
+                            Name = "\"files\"",
+                            FileName = "\"file\""
+                        };
+                        multipartContentLocalVar.Add(streamContentLocalVar);
+                    }
+
+                    {{/isContainer}}
+                    {{^isContainer}}
                     multipartContentLocalVar.Add(new StreamContent({{paramName}}));
 
+                    {{/isContainer}}
                     {{/required}}
                     {{^required}}
                     if ({{paramName}}.IsSet)
+                    {{#isContainer}}
+                        foreach (global::System.IO.Stream streamLocalVar in {{paramName}}.Value)
+                        {
+                            var streamContentLocalVar = new global::System.Net.Http.StreamContent(file);
+                            streamContentLocalVar.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
+                            {
+                                Name = "\"files\"",
+                                FileName = "\"file\""
+                            };
+                            multipartContentLocalVar.Add(streamContentLocalVar);
+                        }
+                    {{/isContainer}}
+                    {{^isContainer}}
                         multipartContentLocalVar.Add(new StreamContent({{paramName}}.Value));
-
+                    {{/isContainer}}
                     {{/required}}
                     {{/isFile}}
                     {{/formParams}}

diff --git a/...urces/3_0/csharp/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml b/...urces/3_0/csharp/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
@@ -17,6 +17,36 @@ tags:
   - name: user
     description: Operations about user
 paths:
+  /upload:
+    post:
+      summary: Upload multiple files
+      operationId: uploadFiles
+      requestBody:
+        required: true
+        content:
+          multipart/form-data:
+            schema:
+              type: object
+              properties:
+                files:
+                  type: array
+                  items:
+                    type: string
+                    format: binary
+              required:
+                - files
+      responses:
+        '200':
+          description: Files uploaded successfully
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  message:
+                    type: string
+                  fileCount:
+                    type: integer
   /roles/report:
     get:
       responses:

diff --git a/samples/client/echo_api/csharp/restsharp/net8/EchoApi/.openapi-generator/VERSION b/samples/client/echo_api/csharp/restsharp/net8/EchoApi/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/samples/client/echo_api/csharp/restsharp/net8/EchoApi/README.md b/samples/client/echo_api/csharp/restsharp/net8/EchoApi/README.md
@@ -6,7 +6,7 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 
 - API version: 0.1.0
 - SDK version: 1.0.0
-- Generator version: 7.14.0-SNAPSHOT
+- Generator version: 7.14.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
 
 <a id="frameworks-supported"></a>

diff --git a/samples/client/others/csharp-complex-files/.openapi-generator/VERSION b/samples/client/others/csharp-complex-files/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/samples/client/others/csharp-complex-files/README.md b/samples/client/others/csharp-complex-files/README.md
@@ -6,7 +6,7 @@ This C# SDK is automatically generated by the [OpenAPI Generator](https://openap
 
 - API version: 1.0.0
 - SDK version: 1.0.0
-- Generator version: 7.14.0-SNAPSHOT
+- Generator version: 7.14.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
 
 <a id="frameworks-supported"></a>

diff --git a/samples/client/petstore/csharp-functions/.openapi-generator/VERSION b/samples/client/petstore/csharp-functions/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/samples/client/petstore/csharp/generichost/latest/HelloWorld/.openapi-generator/VERSION b/samples/client/petstore/csharp/generichost/latest/HelloWorld/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/...nt/petstore/csharp/generichost/latest/HelloWorld/src/Org.OpenAPITools/README.md b/...nt/petstore/csharp/generichost/latest/HelloWorld/src/Org.OpenAPITools/README.md
@@ -104,5 +104,5 @@ namespace YourProject
 This C# SDK is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
 
 - SDK version: 1.0.0
-- Generator version: 7.14.0-SNAPSHOT
+- Generator version: 7.14.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
diff --git a/samples/client/petstore/csharp/generichost/latest/OneOfList/.openapi-generator/VERSION b/samples/client/petstore/csharp/generichost/latest/OneOfList/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/...ent/petstore/csharp/generichost/latest/OneOfList/src/Org.OpenAPITools/README.md b/...ent/petstore/csharp/generichost/latest/OneOfList/src/Org.OpenAPITools/README.md
@@ -107,5 +107,5 @@ namespace YourProject
 This C# SDK is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
 
 - SDK version: 1.0.0
-- Generator version: 7.14.0-SNAPSHOT
+- Generator version: 7.14.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
diff --git a/samples/client/petstore/csharp/generichost/latest/Tags/.openapi-generator/VERSION b/samples/client/petstore/csharp/generichost/latest/Tags/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/...s/client/petstore/csharp/generichost/latest/Tags/src/Org.OpenAPITools/README.md b/...s/client/petstore/csharp/generichost/latest/Tags/src/Org.OpenAPITools/README.md
@@ -115,5 +115,5 @@ namespace YourProject
 This C# SDK is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
 
 - SDK version: 1.0.0
-- Generator version: 7.14.0-SNAPSHOT
+- Generator version: 7.14.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
diff --git a/samples/client/petstore/csharp/generichost/net4.7/AllOf/.openapi-generator/VERSION b/samples/client/petstore/csharp/generichost/net4.7/AllOf/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/.../client/petstore/csharp/generichost/net4.7/AllOf/src/Org.OpenAPITools/README.md b/.../client/petstore/csharp/generichost/net4.7/AllOf/src/Org.OpenAPITools/README.md
@@ -107,5 +107,5 @@ namespace YourProject
 This C# SDK is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
 
 - SDK version: 1.0.0
-- Generator version: 7.14.0-SNAPSHOT
+- Generator version: 7.14.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
diff --git a/samples/client/petstore/csharp/generichost/net4.7/AnyOf/.openapi-generator/VERSION b/samples/client/petstore/csharp/generichost/net4.7/AnyOf/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/.../client/petstore/csharp/generichost/net4.7/AnyOf/src/Org.OpenAPITools/README.md b/.../client/petstore/csharp/generichost/net4.7/AnyOf/src/Org.OpenAPITools/README.md
@@ -107,5 +107,5 @@ namespace YourProject
 This C# SDK is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
 
 - SDK version: 1.0.0
-- Generator version: 7.14.0-SNAPSHOT
+- Generator version: 7.14.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
diff --git a/samples/client/petstore/csharp/generichost/net4.7/AnyOfNoCompare/.openapi-generator/VERSION b/samples/client/petstore/csharp/generichost/net4.7/AnyOfNoCompare/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/...etstore/csharp/generichost/net4.7/AnyOfNoCompare/src/Org.OpenAPITools/README.md b/...etstore/csharp/generichost/net4.7/AnyOfNoCompare/src/Org.OpenAPITools/README.md
@@ -107,5 +107,5 @@ namespace YourProject
 This C# SDK is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
 
 - SDK version: 1.0.0
-- Generator version: 7.14.0-SNAPSHOT
+- Generator version: 7.14.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
diff --git a/samples/client/petstore/csharp/generichost/net4.7/FormModels/.openapi-generator/FILES b/samples/client/petstore/csharp/generichost/net4.7/FormModels/.openapi-generator/FILES
@@ -130,6 +130,7 @@ docs/models/TestResult.md
 docs/models/TestResultCode.md
 docs/models/Triangle.md
 docs/models/TriangleInterface.md
+docs/models/UploadFiles200Response.md
 docs/models/User.md
 docs/models/Whale.md
 docs/models/Zebra.md
@@ -140,6 +141,7 @@ docs/models/ZeroBasedEnumClassZeroBasedEnum.md
 docs/scripts/git_push.ps1
 docs/scripts/git_push.sh
 src/Org.OpenAPITools.Test/Api/DependencyInjectionTests.cs
+src/Org.OpenAPITools.Test/Model/UploadFiles200ResponseTests.cs
 src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
 src/Org.OpenAPITools.Test/README.md
 src/Org.OpenAPITools/Api/AnotherFakeApi.cs
@@ -295,6 +297,7 @@ src/Org.OpenAPITools/Model/TestResult.cs
 src/Org.OpenAPITools/Model/TestResultCode.cs
 src/Org.OpenAPITools/Model/Triangle.cs
 src/Org.OpenAPITools/Model/TriangleInterface.cs
+src/Org.OpenAPITools/Model/UploadFiles200Response.cs
 src/Org.OpenAPITools/Model/User.cs
 src/Org.OpenAPITools/Model/Whale.cs
 src/Org.OpenAPITools/Model/Zebra.cs

diff --git a/samples/client/petstore/csharp/generichost/net4.7/FormModels/.openapi-generator/VERSION b/samples/client/petstore/csharp/generichost/net4.7/FormModels/.openapi-generator/VERSION
@@ -1 +1 @@
-7.14.0-SNAPSHOT
+7.14.0
diff --git a/samples/client/petstore/csharp/generichost/net4.7/FormModels/api/openapi.yaml b/samples/client/petstore/csharp/generichost/net4.7/FormModels/api/openapi.yaml
@@ -41,6 +41,23 @@ tags:
 - description: Operations about user
   name: user
 paths:
+  /upload:
+    post:
+      operationId: uploadFiles
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              $ref: "#/components/schemas/uploadFiles_request"
+        required: true
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/uploadFiles_200_response"
+          description: Files uploaded successfully
+      summary: Upload multiple files
   /roles/report:
     get:
       responses:
@@ -2684,6 +2701,26 @@ components:
       - APPROVED
       - MANUAL_APPROVAL_REQUIRED
       type: string
+    uploadFiles_request:
+      properties:
+        files:
+          items:
+            format: binary
+            type: string
+          type: array
+      required:
+      - files
+      type: object
+    uploadFiles_200_response:
+      example:
+        message: message
+        fileCount: 0
+      properties:
+        message:
+          type: string
+        fileCount:
+          type: integer
+      type: object
     _foo_get_default_response:
       example:
         string:

diff --git a/...es/client/petstore/csharp/generichost/net4.7/FormModels/docs/apis/DefaultApi.md b/...es/client/petstore/csharp/generichost/net4.7/FormModels/docs/apis/DefaultApi.md
@@ -9,6 +9,7 @@ All URIs are relative to *http://petstore.swagger.io:80/v2*
 | [**Hello**](DefaultApi.md#hello) | **GET** /hello | Hello |
 | [**RolesReportGet**](DefaultApi.md#rolesreportget) | **GET** /roles/report |  |
 | [**Test**](DefaultApi.md#test) | **GET** /test | Retrieve an existing Notificationtest&#39;s Elements |
+| [**UploadFiles**](DefaultApi.md#uploadfiles) | **POST** /upload | Upload multiple files |
 
 <a id="fooget"></a>
 # **FooGet**
@@ -166,3 +167,37 @@ No authorization required
 
 [[Back to top]](#) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to Model list]](../../README.md#documentation-for-models) [[Back to README]](../../README.md)
 
+<a id="uploadfiles"></a>
+# **UploadFiles**
+> UploadFiles200Response UploadFiles (List<System.IO.Stream> files)
+
+Upload multiple files
+
+
+### Parameters
+
+| Name | Type | Description | Notes |
+|------|------|-------------|-------|
+| **files** | **List&lt;System.IO.Stream&gt;** |  |  |
+
+### Return type
+
+[**UploadFiles200Response**](UploadFiles200Response.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: multipart/form-data
+ - **Accept**: application/json
+
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | Files uploaded successfully |  -  |
+
+[[Back to top]](#) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to Model list]](../../README.md#documentation-for-models) [[Back to README]](../../README.md)
+
diff --git a/...tore/csharp/generichost/net4.7/FormModels/docs/models/UploadFiles200Response.md b/...tore/csharp/generichost/net4.7/FormModels/docs/models/UploadFiles200Response.md
@@ -0,0 +1,11 @@
+# Org.OpenAPITools.Model.UploadFiles200Response
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**FileCount** | **int** |  | [optional] 
+**Message** | **string** |  | [optional] 
+
+[[Back to Model list]](../../README.md#documentation-for-models) [[Back to API list]](../../README.md#documentation-for-api-endpoints) [[Back to README]](../../README.md)
+
diff --git a/...erichost/net4.7/FormModels/src/Org.OpenAPITools.Test/Model/UploadFiles200ResponseTests.cs b/...erichost/net4.7/FormModels/src/Org.OpenAPITools.Test/Model/UploadFiles200ResponseTests.cs
@@ -0,0 +1,74 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
+using Xunit;
+
+using System;
+using System.Linq;
+using System.IO;
+using System.Collections.Generic;
+using Org.OpenAPITools.Model;
+using Org.OpenAPITools.Client;
+using System.Reflection;
+
+namespace Org.OpenAPITools.Test.Model
+{
+    /// <summary>
+    ///  Class for testing UploadFiles200Response
+    /// </summary>
+    /// <remarks>
+    /// This file is automatically generated by OpenAPI Generator (https://openapi-generator.tech).
+    /// Please update the test case below to test the model.
+    /// </remarks>
+    public class UploadFiles200ResponseTests : IDisposable
+    {
+        // TODO uncomment below to declare an instance variable for UploadFiles200Response
+        //private UploadFiles200Response instance;
+
+        public UploadFiles200ResponseTests()
+        {
+            // TODO uncomment below to create an instance of UploadFiles200Response
+            //instance = new UploadFiles200Response();
+        }
+
+        public void Dispose()
+        {
+            // Cleanup when everything is done.
+        }
+
+        /// <summary>
+        /// Test an instance of UploadFiles200Response
+        /// </summary>
+        [Fact]
+        public void UploadFiles200ResponseInstanceTest()
+        {
+            // TODO uncomment below to test "IsType" UploadFiles200Response
+            //Assert.IsType<UploadFiles200Response>(instance);
+        }
+
+        /// <summary>
+        /// Test the property 'FileCount'
+        /// </summary>
+        [Fact]
+        public void FileCountTest()
+        {
+            // TODO unit test for the property 'FileCount'
+        }
+
+        /// <summary>
+        /// Test the property 'Message'
+        /// </summary>
+        [Fact]
+        public void MessageTest()
+        {
+            // TODO unit test for the property 'Message'
+        }
+    }
+}