Calling an ASP.Net function from javascript

Question

Is it possible to call a C# function in my codebehind from javascript?

Answer 1

Yes, you could use PageMethods.

Answer 2

Remote Scripting - Use client-side JavaScript to remotely invoke methods in ASP.NET pages.

or

aspx page :

  <script language="javascript">

      function init()

      {

           alert('hello ');

           <%SetData();%>;

           alert('<%=strName%>');

      }

      </script>

Code behind file :

    public class _default : System.Web.UI.Page

    {

      public string strName = string.Empty;

      public void SetData()

      {

           strName = "dungla";

      }
 }

Answer 3

You cannot call server-side code ‘directly’ from client-side code. That is because by design, the server side code executes at server side and client side code at the client. However there are some workarounds. To call serverside code from javascript, you will need to use AJAX, and the easiest way out, is to use the ASP.NET AJAX Extensions.

Check this link

How to call Server Side function from Client Side Code using PageMethods in ASP.NET AJAX