title: How can I add a new item to system.webServer/handlers programmatically in ASP.NET
body: <p>This is a sample part from web.config:</p>
  
  <pre><code>&lt;system.webServer&gt;
  &lt;validation validateIntegratedModeConfiguration="false" /&gt;
  
  &lt;handlers&gt;
    &lt;remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" /&gt;
    &lt;remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" /&gt;
    &lt;remove name="ExtensionlessUrlHandler-Integrated-4.0" /&gt;
    &lt;add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" /&gt;
    &lt;add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" /&gt;
    &lt;add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" /&gt;
  &lt;/handlers&gt;
  &lt;/system.webServer&gt;
  </code></pre>
  
  <p>Can I add a new handler it programmatically when web application starts (maybe somewhere in global.asax?).</p>
  
  <p>I want to add something like that:</p>
  
  <pre><code>&lt;add name="AbpDynamicServiceProxyhandler" path="api/serviceproxies/*.js" verb="GET" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" /&gt;
  </code></pre>
  
  <p>But I want to add it when application starting since it's needed for a library I am developing and I dont want to force user to add this line manually.</p>
  
  <p>NOTE: I dont mean to open web.config and add the line programmatically. I want to make same effect with code on startup without modifying web.config of the application.</p>