RicoSuter · david-brink-talogy · Mar 13, 2024
diff --git a/docs/tutorials/GenerateProxyClientWithCLI/generate-proxy-client.md b/docs/tutorials/GenerateProxyClientWithCLI/generate-proxy-client.md
@@ -16,7 +16,7 @@ Also, since you've come to this repo, we'll assume you want to use NSwag as part
 - [OpenAPI Swagger Editor VS Code Extension](https://marketplace.visualstudio.com/items?itemName=42Crunch.vscode-openapi) *(optional)* - This Visual Studio Code (VS Code) extension adds rich support for the OpenAPI Specification (OAS) (formerly known as Swagger Specification) in JSON or YAML format. The features include, for example, SwaggerUI and ReDoc preview, IntelliSense, linting, schema enforcement, code navigation, definition links, snippets, static security analysis, and more!
 - If in later steps you choose to download the 3rd-Party Service's Open API Spec, this plugin makes it easy visualize
 
-**Notes**:  
+**Notes**:
 
 - You may need to specify runtime version `nswag version /runtime:Net50` to run nswag on your local machine, since the sample [nswag config](https://github.com/RicoSuter/NSwag/wiki/NSwag-Configuration-Document) we'll use specifies `runtime` as `Net50`.
 - If you chose to download NSwag as a ZIP Archive, you may see dotnet version errors when trying to execute commands. If you are not able to resolve the issues, you may opt to install via Chocolatey or the MSI from the install instructions page provided above.
@@ -73,7 +73,7 @@ nswag run sample.nswag /runtime:Net50
             "output": null,
             "newLineBehavior": "Auto"
         }
-    },    
+    },
     "codeGenerators": {
         "openApiToCSharpClient": {
             "generateClientClasses": true,
@@ -121,7 +121,7 @@ nswag run sample.nswag /runtime:Net50
             "timeType": "System.TimeSpan",
             "timeSpanType": "System.TimeSpan",
             "arrayType": "System.Collections.ObjectModel.ObservableCollection",
-            "arrayInstanceType": "System.Collections.ObjectModel.ObservableCollection",            
+            "arrayInstanceType": "System.Collections.ObjectModel.ObservableCollection",
             "dictionaryType": "System.Collections.Generic.Dictionary",
             "arrayBaseType": "System.Collections.ObjectModel.ObservableCollection",
             "dictionaryBaseType": "System.Collections.Generic.Dictionary",
@@ -132,6 +132,8 @@ nswag run sample.nswag /runtime:Net50
             "handleReferences": false,
             "generateImmutableArrayProperties": false,
             "generateImmutableDictionaryProperties": false,
+            "asyncMethodFormat": "{0}Async",
+            "syncMethodFormat": "{0}",
             "output": "GENERATEDCODE.cs"
         }
     }

diff --git a/docs/tutorials/GenerateProxyClientWithCLI/sample.nswag b/docs/tutorials/GenerateProxyClientWithCLI/sample.nswag
diff --git a/src/NSwag.ApiDescription.Client/NSwag.ApiDescription.Client.props b/src/NSwag.ApiDescription.Client/NSwag.ApiDescription.Client.props
@@ -89,6 +89,8 @@
       <NSwagServiceSchemes>$(NSwagServiceSchemes)</NSwagServiceSchemes>
       <NSwagOutput>$(NSwagOutput)</NSwagOutput>
       <NSwagNewLineBehavior>$(NSwagNewLineBehavior)</NSwagNewLineBehavior>
+      <NSwagAsyncMethodFormat>$(NSwagAsyncMethodFormat)</NSwagAsyncMethodFormat>
+      <NSwagSyncMethodFormat>$(NSwagSyncMethodFormat)</NSwagSyncMethodFormat>
     </OpenApiReference>
     <OpenApiProjectReference>
       <CodeGenerator>NSwagCSharp</CodeGenerator>
@@ -177,6 +179,8 @@
       <NSwagServiceSchemes>$(NSwagServiceSchemes)</NSwagServiceSchemes>
       <NSwagOutput>$(NSwagOutput)</NSwagOutput>
       <NSwagNewLineBehavior>$(NSwagNewLineBehavior)</NSwagNewLineBehavior>
+      <NSwagAsyncMethodFormat>$(NSwagAsyncMethodFormat)</NSwagAsyncMethodFormat>
+      <NSwagSyncMethodFormat>$(NSwagSyncMethodFormat)</NSwagSyncMethodFormat>
     </OpenApiProjectReference>
   </ItemDefinitionGroup>
 </Project>
diff --git a/src/NSwag.ApiDescription.Client/NSwag.ApiDescription.Client.targets b/src/NSwag.ApiDescription.Client/NSwag.ApiDescription.Client.targets
@@ -276,7 +276,13 @@
       <CurrentOpenApiReference>
         <Command Condition="'%(NSwagNewLineBehavior)' != ''">%(Command) /newLineBehavior:%(NSwagNewLineBehavior)</Command>
       </CurrentOpenApiReference>
-
+      <CurrentOpenApiReference>
+        <Command Condition="'%(NSwagAsyncMethodFormat)' != ''">%(Command) /asyncMethodFormat:%(NSwagAsyncMethodFormat)</Command>
+      </CurrentOpenApiReference>
+      <CurrentOpenApiReference>
+        <Command Condition="'%(NSwagSyncMethodFormat)' != ''">%(Command) /syncMethodFormat:%(NSwagSyncMethodFormat)</Command>
+      </CurrentOpenApiReference>
+
   </ItemGroup>
 
     <Message Importance="high" Text="%0AGenerateNSwagCSharp:" />

diff --git a/src/NSwag.CodeGeneration.CSharp.Tests/CSharpClientSettingsTests.cs b/src/NSwag.CodeGeneration.CSharp.Tests/CSharpClientSettingsTests.cs
@@ -1,6 +1,6 @@
+using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
-using NJsonSchema.Generation;
 using NJsonSchema.NewtonsoftJson.Generation;
 using NSwag.Generation.WebApi;
 using Xunit;
@@ -249,5 +249,52 @@ public async Task When_client_interface_generation_is_enabled_and_suppressed_the
             Assert.DoesNotContain("public partial interface IFooClient", code);
             Assert.Contains("public partial class FooClient : IFooClient", code);
         }
+
+        [Fact]
+        public async Task When_async_method_format_specified_then_methods_use_it()
+        {
+            // Arrange
+            var swaggerGenerator = new WebApiOpenApiDocumentGenerator(new WebApiOpenApiDocumentGeneratorSettings
+            {
+                SchemaSettings = new NewtonsoftJsonSchemaGeneratorSettings()
+            });
+
+            var document = await swaggerGenerator.GenerateForControllerAsync<FooController>();
+            var generator = new CSharpClientGenerator(document, new CSharpClientGeneratorSettings
+            {
+                GenerateClientInterfaces = true,
+                AsyncMethodFormat = "{0}Asynchronous"
+            });
+
+            // Act
+            var code = generator.GenerateFile();
+
+            // Assert
+            Assert.Equal(4, Regex.Matches(code, @"Task<object> GetPersonAsynchronous\(").Count);
+        }
+
+        [Fact]
+        public async Task When_sync_method_format_specified_then_methods_use_it()
+        {
+            // Arrange
+            var swaggerGenerator = new WebApiOpenApiDocumentGenerator(new WebApiOpenApiDocumentGeneratorSettings
+            {
+                SchemaSettings = new NewtonsoftJsonSchemaGeneratorSettings()
+            });
+
+            var document = await swaggerGenerator.GenerateForControllerAsync<FooController>();
+            var generator = new CSharpClientGenerator(document, new CSharpClientGeneratorSettings
+            {
+                GenerateClientInterfaces = true,
+                GenerateSyncMethods = true,
+                SyncMethodFormat = "{0}Synchronous"
+            });
+
+            // Act
+            var code = generator.GenerateFile();
+
+            // Assert
+            Assert.Equal(2, Regex.Matches(code, @"object GetPersonSynchronous\(").Count);
+        }
     }
 }
diff --git a/src/NSwag.CodeGeneration.CSharp/CSharpClientGeneratorSettings.cs b/src/NSwag.CodeGeneration.CSharp/CSharpClientGeneratorSettings.cs
@@ -112,5 +112,11 @@ public CSharpClientGeneratorSettings()
 
         /// <summary>Gets or sets a value indicating whether to expose the JsonSerializerSettings property (default: false).</summary>
         public bool ExposeJsonSerializerSettings { get; set; }
+
+        /// <summary>Gets or sets the format for asynchronous methods (default: "{0}Async").</summary>
+        public string AsyncMethodFormat { get; set; } = "{0}Async";
+
+        /// <summary>Gets or sets the format for synchronous methods (default: "{0}").</summary>
+        public string SyncMethodFormat { get; set; } = "{0}";
     }
 }
diff --git a/src/NSwag.CodeGeneration.CSharp/Models/CSharpClientTemplateModel.cs b/src/NSwag.CodeGeneration.CSharp/Models/CSharpClientTemplateModel.cs
@@ -159,6 +159,12 @@ public CSharpClientTemplateModel(
         /// </summary>
         public bool GeneratePrepareRequestAndProcessResponseAsAsyncMethods => _settings.GeneratePrepareRequestAndProcessResponseAsAsyncMethods;
 
+        /// <summary>Gets the format for asynchronous methods.</summary>
+        public string AsyncMethodFormat => _settings.AsyncMethodFormat;
+
+        /// <summary>Gets the format for synchronous methods.</summary>
+        public string SyncMethodFormat => _settings.SyncMethodFormat;
+
         /// <summary>Gets the JSON serializer parameter code.</summary>
         public string JsonSerializerParameterCode
         {

diff --git a/src/NSwag.CodeGeneration.CSharp/Templates/Client.Class.liquid b/src/NSwag.CodeGeneration.CSharp/Templates/Client.Class.liquid
@@ -125,25 +125,25 @@
 {%     if GenerateOptionalParameters == false -%}
     {% template Client.Method.Documentation %}
     {% template Client.Method.Annotations %}
-    {{ operation.MethodAccessModifier }} virtual {{ operation.ResultType }} {{ operation.ActualOperationName }}Async({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}{% if parameter.IsLast == false %}, {% endif %}{% endfor %})
+    {{ operation.MethodAccessModifier }} virtual {{ operation.ResultType }} {{ AsyncMethodFormat | format_string: operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}{% if parameter.IsLast == false %}, {% endif %}{% endfor %})
     {
-        return {{ operation.ActualOperationName }}Async({% for parameter in operation.Parameters %}{{ parameter.VariableName }}, {% endfor %}System.Threading.CancellationToken.None);
+        return {{ AsyncMethodFormat | format_string: operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.VariableName }}, {% endfor %}System.Threading.CancellationToken.None);
     }
 
 {%     endif -%}
 {%     if GenerateSyncMethods -%}
     {% template Client.Method.Documentation %}
     {% template Client.Method.Annotations %}
-    {{ operation.MethodAccessModifier }} virtual {{ operation.SyncResultType }} {{ operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}{% if parameter.IsLast == false %}, {% endif %}{% endfor %})
+    {{ operation.MethodAccessModifier }} virtual {{ operation.SyncResultType }} {{ SyncMethodFormat | format_string: operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}{% if parameter.IsLast == false %}, {% endif %}{% endfor %})
     {
-        {% if operation.HasResult or operation.WrapResponse %}return {% endif %}System.Threading.Tasks.Task.Run(async () => await {{ operation.ActualOperationName }}Async({% for parameter in operation.Parameters %}{{ parameter.VariableName }}, {% endfor %}System.Threading.CancellationToken.None)).GetAwaiter().GetResult();
+        {% if operation.HasResult or operation.WrapResponse %}return {% endif %}System.Threading.Tasks.Task.Run(async () => await {{ AsyncMethodFormat | format_string: operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.VariableName }}, {% endfor %}System.Threading.CancellationToken.None)).GetAwaiter().GetResult();
     }
 
 {%     endif -%}
     /// <param name="cancellationToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
     {% template Client.Method.Documentation %}
     {% template Client.Method.Annotations %}
-    {{ operation.MethodAccessModifier }} virtual async {{ operation.ResultType }} {{ operation.ActualOperationName }}Async({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}, {% endfor %}System.Threading.CancellationToken cancellationToken{% if GenerateOptionalParameters %} = default(System.Threading.CancellationToken){% endif %})
+    {{ operation.MethodAccessModifier }} virtual async {{ operation.ResultType }} {{ AsyncMethodFormat | format_string: operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}, {% endfor %}System.Threading.CancellationToken cancellationToken{% if GenerateOptionalParameters %} = default(System.Threading.CancellationToken){% endif %})
     {
 {%     for parameter in operation.PathParameters -%}
 {%         if parameter.IsNullable == false and parameter.IsRequired -%}

diff --git a/src/NSwag.CodeGeneration.CSharp/Templates/Client.Interface.liquid b/src/NSwag.CodeGeneration.CSharp/Templates/Client.Interface.liquid
@@ -7,19 +7,19 @@ public partial interface I{{ Class }}{% if HasClientBaseInterface %} : {{ Client
 {%   if GenerateOptionalParameters == false -%}
     {% template Client.Method.Documentation %}
     {% template Client.Method.Annotations %}
-    {{ operation.ResultType }} {{ operation.ActualOperationName }}Async({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}{% if parameter.IsLast == false %}, {% endif %}{% endfor %});
+    {{ operation.ResultType }} {{ AsyncMethodFormat | format_string: operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}{% if parameter.IsLast == false %}, {% endif %}{% endfor %});
 
 {%   endif -%}
 {%   if GenerateSyncMethods -%}
     {% template Client.Method.Documentation %}
     {% template Client.Method.Annotations %}
-    {{ operation.SyncResultType }} {{ operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}{% if parameter.IsLast == false %}, {% endif %}{% endfor %});
+    {{ operation.SyncResultType }} {{ SyncMethodFormat | format_string: operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}{% if parameter.IsLast == false %}, {% endif %}{% endfor %});
 
 {%-   endif %}
     /// <param name="cancellationToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
     {% template Client.Method.Documentation %}
     {% template Client.Method.Annotations %}
-    {{ operation.ResultType }} {{ operation.ActualOperationName }}Async({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}, {% endfor %}System.Threading.CancellationToken cancellationToken{% if GenerateOptionalParameters %} = default(System.Threading.CancellationToken){% endif %});
+    {{ operation.ResultType }} {{ AsyncMethodFormat | format_string: operation.ActualOperationName }}({% for parameter in operation.Parameters %}{{ parameter.Type }} {{ parameter.VariableName }}{% if GenerateOptionalParameters and parameter.IsOptional %} = null{% endif %}, {% endfor %}System.Threading.CancellationToken cancellationToken{% if GenerateOptionalParameters %} = default(System.Threading.CancellationToken){% endif %});
 
 {% endfor -%}
 }
diff --git a/src/NSwag.Commands/Commands/CodeGeneration/OpenApiToCSharpClientCommand.cs b/src/NSwag.Commands/Commands/CodeGeneration/OpenApiToCSharpClientCommand.cs
@@ -265,6 +265,22 @@ public string QueryNullValue
             set { Settings.QueryNullValue = value; }
         }
 
+        [Argument(Name = "AsyncMethodFormat", IsRequired = false,
+          Description = "Specifies the format for asynchronous methods (default: '{0}Async').")]
+        public string AsyncMethodFormat
+        {
+            get { return Settings.AsyncMethodFormat; }
+            set { Settings.AsyncMethodFormat = value; }
+        }
+
+        [Argument(Name = "SyncMethodFormat", IsRequired = false,
+          Description = "Specifies the format for synchronous methods (default: '{0}').")]
+        public string SyncMethodFormat
+        {
+            get { return Settings.SyncMethodFormat; }
+            set { Settings.SyncMethodFormat = value; }
+        }
+
         public override async Task<object> RunAsync(CommandLineProcessor processor, IConsoleHost host)
         {
             var result = await RunAsync();

diff --git a/src/NSwag.Sample.NET70Minimal/nswag.json b/src/NSwag.Sample.NET70Minimal/nswag.json
@@ -164,7 +164,9 @@
       "serviceHost": null,
       "serviceSchemes": null,
       "output": "GeneratedClientsCs.gen",
-      "newLineBehavior": "Auto"
+      "newLineBehavior": "Auto",
+      "asyncMethodFormat": "{0}Async",
+      "syncMethodFormat": "{0}"
     },
     "openApiToCSharpController": {
       "controllerBaseClass": null,
@@ -225,7 +227,9 @@
       "serviceHost": null,
       "serviceSchemes": null,
       "output": "GeneratedControllersCs.gen",
-      "newLineBehavior": "Auto"
+      "newLineBehavior": "Auto",
+      "asyncMethodFormat": "{0}Async",
+      "syncMethodFormat": "{0}"
     }
   }
-}
+}
diff --git a/src/NSwag.Sample.NET80Minimal/nswag.json b/src/NSwag.Sample.NET80Minimal/nswag.json
@@ -164,7 +164,9 @@
       "serviceHost": null,
       "serviceSchemes": null,
       "output": "GeneratedClientsCs.gen",
-      "newLineBehavior": "Auto"
+      "newLineBehavior": "Auto",
+      "asyncMethodFormat": "{0}Async",
+      "syncMethodFormat": "{0}"
     },
     "openApiToCSharpController": {
       "controllerBaseClass": null,
@@ -225,7 +227,9 @@
       "serviceHost": null,
       "serviceSchemes": null,
       "output": "GeneratedControllersCs.gen",
-      "newLineBehavior": "Auto"
+      "newLineBehavior": "Auto",
+      "asyncMethodFormat": "{0}Async",
+      "syncMethodFormat": "{0}"
     }
   }
-}
+}
diff --git a/src/NSwagStudio/Views/CodeGenerators/SwaggerToCSharpClientGeneratorView.xaml b/src/NSwagStudio/Views/CodeGenerators/SwaggerToCSharpClientGeneratorView.xaml
@@ -185,6 +185,12 @@
                                 <TextBox Text="{Binding Command.QueryNullValue, Mode=TwoWay}" 
                                          ToolTip="QueryNullValue" Margin="0,0,0,12" />
 
+                                <TextBlock Text="Format for asynchronous methods" FontWeight="Bold" Margin="0,0,0,6" />
+                                <TextBox Text="{Binding Command.AsyncMethodFormat, Mode=TwoWay}" ToolTip="AsyncMethodFormat" Margin="0,0,0,12" />
+
+                                <TextBlock Text="Format for synchronous methods" FontWeight="Bold" Margin="0,0,0,6" />
+                                <TextBox Text="{Binding Command.SyncMethodFormat, Mode=TwoWay}" ToolTip="SyncMethodFormat" Margin="0,0,0,12" />
+
                                 <GroupBox Header="Base Class and Configuration Class" Margin="0,0,0,12">
                                     <StackPanel Margin="4,8,4,-8">
                                         <TextBlock Text="Base Class Name (optional)" FontWeight="Bold" Margin="0,0,0,6" />