Question

I want to call a C# function in my aspx.cs file with jQuery. The function looks like:

protected void Fill(object sender, EventArgs e) { ...do s.th. with sender... }

in the function im getting my control I want to work with by doing a cast on the sender. How to pass the sender to server with jquery?

Answer 1

Check this : Implementing Client Callbacks Programmatically Without Postbacks in ASP.NET Web Pages

OR

Hi you can check this article : http://pranayamr.blogspot.com/2012/01/calling-server-side-function-from.html which dicuss about calling server method with the jQuery function.

cs file i.e serverside code

   [WebMethod]      
    public static string IsExists(string value)      
    {           return "True";      } 

Client script

function IsExists(pagePath, dataString, textboxid, errorlableid) {
//alert(pagePath);

     $.ajax({
         type: "POST",
         url: pagePath,
         data: dataString,
         contentType: "application/json; charset=utf-8",
         dataType: "json",
         error: function(XMLHttpRequest, textStatus, errorThrown) {
             $(errorlableid).show();
             $(errorlableid).html("Error");

         },
         success:
                            function(result) {
                                var flg = true;
                                if (result != null) {
                                    debugger;
                                    flg = result.d;

                                    if (flg == "True") {
                                        $(errorlableid).show();
                                    }
                                    else {
                                        $(errorlableid).hide();
                                    }
                                }
                            }
     });

 }

 function focuslost() {
     var pagePath = window.location.pathname + "/IsExists";
     var dataString = "{ 'value':'" + $("#<%= txtData.ClientID%>").val() + "' }";

     var textboxid = "#<%= txtData.ClientID%>";
     var errorlableid = "#<%= lblError.ClientID%>";
     IsExists(pagePath, dataString, textboxid, errorlableid);
 }