Not able to call Web Method using Jquery Ajax Calls in asp.net

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Hi,
I am trying to call a web method on jquery button click event uisng jquery ajax calls, But getting Exception "A first chance exception of type System.Threading.ThreadAbortException' occurred in mscorlib.dll" in output file of visual studio.(I am using the Visaul Studio 2012 WebExpress)

XML

<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.2.js"></script>

               <script type="text/javascript">
                       $(document).ready(function () {
                           $("#btnUploadFile").click(function (e) {
                               $.ajax({
                                   type: 'POST',
                                   data: '{name: "' + $("#<%=txtUserName.ClientID%>")[0].value + '" }',
                                   url: "AllEmployees.aspx/UploadEmployees",
                                   contentType: "application/json; charset=utf-8",
                                   dataType: "json",
                                   success: function (msg) {
                                       alert(msg);
                                   }
                               });
                               e.preventDefault();
                           });
                       });
                   </script>

C#

[System.Web.Services.WebMethod]
             public string UploadEmployees(string name)
                    {
                        try
                        {
                            name="hi";
                           return msg;
                        }
                        catch (Exception)
                        {

                            throw;
                       }

                    }

Posted 29-Jul-14 20:58pm

santoshkumar413

Updated 29-Jul-14 21:13pm

Nirav Prabtani

v2

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Comments

Gihan Liyanage 30-Jul-14 3:15am

Do you use any response.redirect() function ?

2 solutions

Solution 2

I modified your code. See if it works :

JavaScript

$(document).ready(function () {
          $("#btnUploadFile").click(function (e) {
              $.ajax({
                  type: 'POST',
                  data: '{name: "' + $("#<%=txtUserName.ClientID%>")[0].value + '" }',
                  url: "SortGrid.aspx/UploadEmployees",
                  contentType: "application/json; charset=utf-8",
                  dataType: "json",
                  success: function (msg) {
                      alert(msg.d); //here you need to use msg.d in order to get response.
                  }
              });
              e.preventDefault();
          });
      });

C#

[System.Web.Services.WebMethod]
   public static string UploadEmployees(string name)//you have to use Static key word
   {
       try
       {
           //name = "hi";
           return name; //return parameter value it will be your textbox value
       }
       catch (Exception)
       {

           throw;
       }

   }

Good luck

Posted 29-Jul-14 21:28pm

Raje_

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**Nirav Prabtani** · Accepted Answer · 2014-07-29T21:12:00

Solution 1

You forget to set method static, try this.. :)

C#

[System.Web.Services.WebMethod]
           public static string UploadEmployees(string name)
                  {
                      try
                      {
                          name=&quot;hi&quot;;
                         return msg;
                      }
                      catch (Exception)
                      {

                          throw;
                     }

                  }

Posted 29-Jul-14 21:12pm

Nirav Prabtani

Comments

santoshkumar413 30-Jul-14 3:17am

@ Nirav Prabtani Thanks for reply but when i adds static key word i am getting errors for the non static methods present inside the above method, Actually The method will be
[System.Web.Services.WebMethod]
public string UploadEmployees(string name)
{
try
{
string msg = string.Empty;
if (flUpload.HasFile)
{
Upload(); //Upload File Method
if (this.currFileExtension == ".xlsx" || this.currFileExtension == ".xls")
{
DataTable dt = ReadExcelToTable(currFilePath); //Read Excel File (.XLS and .XLSX Format)
msg = InsertUpdateEmployees(dt);
}
else if (this.currFileExtension == ".csv")
{
DataTable dt = ReadExcelWidthStream(currFilePath); //Read .CSV File
msg = InsertUpdateEmployees(dt);
}
}

return msg;
}
catch (Exception)
{

throw;
}
}

Nirav Prabtani 30-Jul-14 3:19am

You can avoid the static constraint by using a simple .asmx page instead of the codebehind page.

http://stackoverflow.com/questions/1360253/call-non-static-method-in-server-sideaspx-cs-from-client-side-use-javascript

santoshkumar413 30-Jul-14 3:26am

Hi, Thnaks for the reply I will Be adding the web service nad calling that service

Nirav Prabtani 30-Jul-14 3:27am

welcome.. :)