Restfull service in asp.net c#

 void Application_BeginRequest(object sender, EventArgs e)
    {
        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");
        if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
        {
            HttpContext.Current.Response.AddHeader("Cache-Control", "no-cache");
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept, x-requested-with");
            HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");
            HttpContext.Current.Response.End();
        }
    }

config setting
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<system.serviceModel>
    <services>
      <service name="RestService" behaviorConfiguration="ServiceBehaviour">
        <endpoint address=""  binding="webHttpBinding" contract="IRestService" behaviorConfiguration="web" bindingConfiguration="crossDomain">
        </endpoint>
      </service>
    </services>
    <bindings>
      <webHttpBinding>
        <binding name="crossDomain" crossDomainScriptAccessEnabled="true"/>
      </webHttpBinding>
    </bindings>
    <behaviors>
      <serviceBehaviors>
        <behavior name="ServiceBehaviour">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="web">
          <webHttp/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true">
      <baseAddressPrefixFilters>
        <add prefix="http://www.example.com"/>
      </baseAddressPrefixFilters>
    </serviceHostingEnvironment>
    <!--<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />-->
  </system.serviceModel>
Sample Method
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[WebMethod]
    public string getdata(string user, string name)
    {
//Your code
return string
}