# C1.Web.Api.C1ApiController.BadRequest

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="C1_Web_Api_C1ApiController_BadRequest_" data-uid="C1.Web.Api.C1ApiController.BadRequest*">BadRequest Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Web_Api_C1ApiController_BadRequest_" data-uid="C1.Web.Api.C1ApiController.BadRequest*"></a>
<h4 id="C1_Web_Api_C1ApiController_BadRequest_Microsoft_AspNetCore_Mvc_ModelBinding_ModelStateDictionary_" data-uid="C1.Web.Api.C1ApiController.BadRequest(Microsoft.AspNetCore.Mvc.ModelBinding.ModelStateDictionary)">BadRequest(ModelStateDictionary)</h4>
<div class="markdown level1 summary"><p>Creates an Microsoft.AspNetCore.Mvc.BadRequestObjectResult that produces a Bad
Request (400) response.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public override BadRequestObjectResult BadRequest(ModelStateDictionary modelState)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Overrides Function BadRequest(modelState As ModelStateDictionary) As BadRequestObjectResult</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/microsoft.aspnetcore.mvc.modelbinding.modelstatedictionary">ModelStateDictionary</a></td>
      <td><span class="parametername">modelState</span></td>
      <td></td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/microsoft.aspnetcore.mvc.badrequestobjectresult">BadRequestObjectResult</a></td>
      <td><p>The created Microsoft.AspNetCore.Mvc.BadRequestObjectResult for the response.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/microsoft.aspnetcore.mvc.controllerbase.badrequest#microsoft-aspnetcore-mvc-controllerbase-badrequest(microsoft-aspnetcore-mvc-modelbinding-modelstatedictionary)">ControllerBase.BadRequest(ModelStateDictionary)</a></div>


<a id="C1_Web_Api_C1ApiController_BadRequest_" data-uid="C1.Web.Api.C1ApiController.BadRequest*"></a>
<h4 id="C1_Web_Api_C1ApiController_BadRequest_System_Object_" data-uid="C1.Web.Api.C1ApiController.BadRequest(System.Object)">BadRequest(object)</h4>
<div class="markdown level1 summary"><p>Creates an Microsoft.AspNetCore.Mvc.BadRequestObjectResult that produces a Bad
Request (400) response.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public override BadRequestObjectResult BadRequest(object error)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Overrides Function BadRequest([error] As Object) As BadRequestObjectResult</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></td>
      <td><span class="parametername">error</span></td>
      <td></td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/microsoft.aspnetcore.mvc.badrequestobjectresult">BadRequestObjectResult</a></td>
      <td><p>The created Microsoft.AspNetCore.Mvc.BadRequestObjectResult for the response.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/microsoft.aspnetcore.mvc.controllerbase.badrequest#microsoft-aspnetcore-mvc-controllerbase-badrequest(system-object)">ControllerBase.BadRequest(object)</a></div>
</div>