---
title: Documentation for the aspnetcore Generator
---

## METADATA

| Property | Value | Notes |
| -------- | ----- | ----- |
| generator name | aspnetcore | pass this to the generate command after -g |
| generator stability | STABLE | |
| generator type | SERVER | |
| generator language | C# | |
| generator default templating engine | mustache | |
| helpTxt | Generates an ASP.NET Core Web API server. | |

## CONFIG OPTIONS
These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.

| Option | Description | Values | Default |
| ------ | ----------- | ------ | ------- |
|aspnetCoreVersion|ASP.NET Core version: 6.0, 5.0, 3.1, 3.0, 2.2, 2.1, 2.0 (deprecated)|<dl><dt>**2.0**</dt><dd>ASP.NET Core 2.0</dd><dt>**2.1**</dt><dd>ASP.NET Core 2.1</dd><dt>**2.2**</dt><dd>ASP.NET Core 2.2</dd><dt>**3.0**</dt><dd>ASP.NET Core 3.0</dd><dt>**3.1**</dt><dd>ASP.NET Core 3.1</dd><dt>**5.0**</dt><dd>ASP.NET Core 5.0</dd><dt>**6.0**</dt><dd>ASP.NET Core 6.0</dd><dt>**7.0**</dt><dd>ASP.NET Core 7.0</dd><dt>**8.0**</dt><dd>ASP.NET Core 8.0</dd></dl>|8.0|
|buildTarget|Target to build an application or library|<dl><dt>**program**</dt><dd>Generate code for a standalone server</dd><dt>**library**</dt><dd>Generate code for a server abstract class library</dd></dl>|program|
|centralizedPackageVersionManagement|Option to control the usage of centralized package version management. https://devblogs.microsoft.com/nuget/introducing-central-package-management/#disabling-central-package-management|<dl><dt>**optout**</dt><dd>Opt out of centralized package version management. Set this if you have a Directory.Packages.pros file but want this project to ignore it.</dd><dt>**default**</dt><dd>Property in project won't be used</dd><dt>**enable**</dt><dd>Centralized package version management will be used</dd></dl>|null|
|classModifier|Class Modifier for controller classes: Empty string or abstract.| ||
|compatibilityVersion|ASP.Net Core CompatibilityVersion| |Version_2_2|
|enumNameSuffix|Suffix that will be appended to all enum names.| |Enum|
|enumValueSuffix|Suffix that will be appended to all enum values.| |Enum|
|generateBody|Generates method body.| |true|
|isLibrary|Is the build a library| |false|
|licenseName|The name of the license| |NoLicense|
|licenseUrl|The URL of the license| |http://localhost|
|modelClassModifier|Model Class Modifier can be nothing or partial| |partial|
|newtonsoftVersion|Version for Microsoft.AspNetCore.Mvc.NewtonsoftJson for ASP.NET Core 3.0+| |3.0.0|
|nullableReferenceTypes|Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.1 or newer.| |false|
|operationIsAsync|Set methods to async or sync (default).| |false|
|operationModifier|Operation Modifier can be virtual or abstract|<dl><dt>**virtual**</dt><dd>Keep method virtual</dd><dt>**abstract**</dt><dd>Make method abstract</dd></dl>|virtual|
|operationResultTask|Set methods result to Task&lt;&gt;.| |false|
|packageAuthors|Specifies Authors property in the .NET Core project file.| |OpenAPI|
|packageCopyright|Specifies an AssemblyCopyright for the .NET Framework global assembly attributes stored in the AssemblyInfo file.| |No Copyright|
|packageDescription|Specifies a AssemblyDescription for the .NET Framework global assembly attributes stored in the AssemblyInfo file.| |A library generated from a OpenAPI doc|
|packageGuid|The GUID that will be associated with the C# project| |null|
|packageName|C# package name (convention: Title.Case).| |Org.OpenAPITools|
|packageTitle|Specifies an AssemblyTitle for the .NET Framework global assembly attributes stored in the AssemblyInfo file.| |OpenAPI Library|
|packageVersion|C# package version.| |1.0.0|
|pocoModels|Build POCO Models| |false|
|returnICollection|Return ICollection&lt;T&gt; instead of the concrete type.| |false|
|sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
|sourceFolder|source folder for generated code| |src|
|swashbuckleVersion|Swashbuckle version: 3.0.0 (deprecated), 4.0.0 (deprecated), 5.0.0 (deprecated), 6.4.0|<dl><dt>**3.0.0**</dt><dd>Swashbuckle 3.0.0</dd><dt>**4.0.0**</dt><dd>Swashbuckle 4.0.0</dd><dt>**5.0.0**</dt><dd>Swashbuckle 5.0.0</dd><dt>**6.4.0**</dt><dd>Swashbuckle 6.4.0</dd></dl>|6.4.0|
|useCollection|Deserialize array types to Collection&lt;T&gt; instead of List&lt;T&gt;.| |false|
|useDateTimeForDate|Use DateTime to model date properties even if DateOnly supported. (.net 6.0+ only)| |false|
|useDateTimeOffset|Use DateTimeOffset to model date-time properties| |false|
|useDefaultRouting|Use default routing for the ASP.NET Core version.| |true|
|useFrameworkReference|Use frameworkReference for ASP.NET Core 3.0+ and PackageReference ASP.NET Core 2.2 or earlier.| |false|
|useNewtonsoft|Uses the Newtonsoft JSON library.| |true|
|useSeparateModelProject|Create a separate project for models| |false|
|useSwashbuckle|Uses the Swashbuckle.AspNetCore NuGet package for documentation.| |true|

## SUPPORTED VENDOR EXTENSIONS

| Extension name | Description | Applicable for | Default value |
| -------------- | ----------- | -------------- | ------------- |
|x-zero-based-enum|When used on an enum, the index will not be generated and the default numbering will be used, zero-based|MODEL|false


## IMPORT MAPPING

| Type/Alias | Imports |
| ---------- | ------- |


## INSTANTIATION TYPES

| Type/Alias | Instantiated By |
| ---------- | --------------- |
|array|List|
|list|List|
|map|Dictionary|


## LANGUAGE PRIMITIVES

<ul class="column-ul">
<li>Boolean</li>
<li>Collection</li>
<li>DateOnly</li>
<li>DateOnly?</li>
<li>DateTime</li>
<li>DateTime?</li>
<li>DateTimeOffset</li>
<li>DateTimeOffset?</li>
<li>Decimal</li>
<li>Dictionary</li>
<li>Double</li>
<li>Float</li>
<li>Guid</li>
<li>Guid?</li>
<li>ICollection</li>
<li>Int32</li>
<li>Int64</li>
<li>List</li>
<li>Object</li>
<li>String</li>
<li>System.IO.Stream</li>
<li>bool</li>
<li>bool?</li>
<li>byte[]</li>
<li>decimal</li>
<li>decimal?</li>
<li>double</li>
<li>double?</li>
<li>float</li>
<li>float?</li>
<li>int</li>
<li>int?</li>
<li>long</li>
<li>long?</li>
<li>string</li>
<li>uint</li>
<li>uint?</li>
<li>ulong</li>
<li>ulong?</li>
</ul>

## RESERVED WORDS

<ul class="column-ul">
<li>Client</li>
<li>Configuration</li>
<li>Environment</li>
<li>OperatingSystem</li>
<li>TimeZone</li>
<li>Version</li>
<li>abstract</li>
<li>as</li>
<li>async</li>
<li>await</li>
<li>base</li>
<li>bool</li>
<li>break</li>
<li>byte</li>
<li>case</li>
<li>catch</li>
<li>char</li>
<li>checked</li>
<li>class</li>
<li>client</li>
<li>const</li>
<li>continue</li>
<li>decimal</li>
<li>default</li>
<li>delegate</li>
<li>do</li>
<li>double</li>
<li>dynamic</li>
<li>else</li>
<li>enum</li>
<li>event</li>
<li>explicit</li>
<li>extern</li>
<li>false</li>
<li>finally</li>
<li>fixed</li>
<li>float</li>
<li>for</li>
<li>foreach</li>
<li>goto</li>
<li>if</li>
<li>implicit</li>
<li>in</li>
<li>int</li>
<li>interface</li>
<li>internal</li>
<li>is</li>
<li>localVarFileParams</li>
<li>localVarFormParams</li>
<li>localVarHeaderParams</li>
<li>localVarHttpContentType</li>
<li>localVarHttpContentTypes</li>
<li>localVarHttpHeaderAccept</li>
<li>localVarHttpHeaderAccepts</li>
<li>localVarPath</li>
<li>localVarPathParams</li>
<li>localVarPostBody</li>
<li>localVarQueryParams</li>
<li>localVarResponse</li>
<li>localVarStatusCode</li>
<li>lock</li>
<li>long</li>
<li>namespace</li>
<li>new</li>
<li>null</li>
<li>object</li>
<li>operator</li>
<li>out</li>
<li>override</li>
<li>parameter</li>
<li>params</li>
<li>private</li>
<li>protected</li>
<li>public</li>
<li>readonly</li>
<li>ref</li>
<li>return</li>
<li>sbyte</li>
<li>sealed</li>
<li>short</li>
<li>sizeof</li>
<li>stackalloc</li>
<li>static</li>
<li>string</li>
<li>struct</li>
<li>switch</li>
<li>system</li>
<li>this</li>
<li>throw</li>
<li>true</li>
<li>try</li>
<li>typeof</li>
<li>uint</li>
<li>ulong</li>
<li>unchecked</li>
<li>unsafe</li>
<li>ushort</li>
<li>using</li>
<li>var</li>
<li>virtual</li>
<li>void</li>
<li>volatile</li>
<li>while</li>
<li>yield</li>
</ul>

## FEATURE SET


### Client Modification Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|BasePath|✗|ToolingExtension
|Authorizations|✗|ToolingExtension
|UserAgent|✗|ToolingExtension
|MockServer|✗|ToolingExtension

### Data Type Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Custom|✗|OAS2,OAS3
|Int32|✓|OAS2,OAS3
|Int64|✓|OAS2,OAS3
|Float|✓|OAS2,OAS3
|Double|✓|OAS2,OAS3
|Decimal|✓|ToolingExtension
|String|✓|OAS2,OAS3
|Byte|✓|OAS2,OAS3
|Binary|✓|OAS2,OAS3
|Boolean|✓|OAS2,OAS3
|Date|✓|OAS2,OAS3
|DateTime|✓|OAS2,OAS3
|Password|✓|OAS2,OAS3
|File|✓|OAS2
|Uuid|✗|
|Array|✓|OAS2,OAS3
|Null|✗|OAS3
|AnyType|✗|OAS2,OAS3
|Object|✓|OAS2,OAS3
|Maps|✓|ToolingExtension
|CollectionFormat|✓|OAS2
|CollectionFormatMulti|✓|OAS2
|Enum|✓|OAS2,OAS3
|ArrayOfEnum|✓|ToolingExtension
|ArrayOfModel|✓|ToolingExtension
|ArrayOfCollectionOfPrimitives|✓|ToolingExtension
|ArrayOfCollectionOfModel|✓|ToolingExtension
|ArrayOfCollectionOfEnum|✓|ToolingExtension
|MapOfEnum|✓|ToolingExtension
|MapOfModel|✓|ToolingExtension
|MapOfCollectionOfPrimitives|✓|ToolingExtension
|MapOfCollectionOfModel|✓|ToolingExtension
|MapOfCollectionOfEnum|✓|ToolingExtension

### Documentation Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Readme|✓|ToolingExtension
|Model|✓|ToolingExtension
|Api|✓|ToolingExtension

### Global Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Host|✓|OAS2,OAS3
|BasePath|✓|OAS2,OAS3
|Info|✓|OAS2,OAS3
|Schemes|✗|OAS2,OAS3
|PartialSchemes|✓|OAS2,OAS3
|Consumes|✓|OAS2
|Produces|✓|OAS2
|ExternalDocumentation|✓|OAS2,OAS3
|Examples|✓|OAS2,OAS3
|XMLStructureDefinitions|✗|OAS2,OAS3
|MultiServer|✗|OAS3
|ParameterizedServer|✗|OAS3
|ParameterStyling|✗|OAS3
|Callbacks|✗|OAS3
|LinkObjects|✗|OAS3

### Parameter Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Path|✓|OAS2,OAS3
|Query|✓|OAS2,OAS3
|Header|✓|OAS2,OAS3
|Body|✓|OAS2
|FormUnencoded|✓|OAS2
|FormMultipart|✓|OAS2
|Cookie|✓|OAS3

### Schema Support Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Simple|✓|OAS2,OAS3
|Composite|✓|OAS2,OAS3
|Polymorphism|✓|OAS2,OAS3
|Union|✗|OAS3
|allOf|✗|OAS2,OAS3
|anyOf|✗|OAS3
|oneOf|✗|OAS3
|not|✗|OAS3

### Security Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|BasicAuth|✓|OAS2,OAS3
|ApiKey|✓|OAS2,OAS3
|OpenIDConnect|✗|OAS3
|BearerToken|✓|OAS3
|OAuth2_Implicit|✗|OAS2,OAS3
|OAuth2_Password|✗|OAS2,OAS3
|OAuth2_ClientCredentials|✗|OAS2,OAS3
|OAuth2_AuthorizationCode|✗|OAS2,OAS3
|SignatureAuth|✗|OAS3
|AWSV4Signature|✗|ToolingExtension

### Wire Format Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|JSON|✓|OAS2,OAS3
|XML|✓|OAS2,OAS3
|PROTOBUF|✗|ToolingExtension
|Custom|✗|OAS2,OAS3
