AJAX call works with int type but not working with string type

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C#

ASP.NET

Javascript

Ajax

Hi,

I am invoking one webservice method using ajax post call. when test with int type, it invokes web service method correctly. But when I tried with hidden value which is string type, it gives internal server error.


//first way --> testing with int type. this invokes the method " getseeestionval.

<script type="text/javascript">

function getval() {

              alert('hi');

      var hidval = document.getElementById('<%=bid.ClientID%>').value;

          alert(hidval);

          $.ajax({

              type:"POST",

              url:"../WebService5.asmx/getseeestionval",

              data:"{'theValue':'1'}",   

              dataType:"json",

              contentType:"application/json; charset=utf-8",

              success:function (data) {

                  OnSuccess(data.d);

              },

              error:function (xhr, status, error) {

                  OnFailure(error);

              }

          });

      }

     function OnSuccess(dateTime) {

 if (dateTime) {

document.getElementById("currentDate").innerHTML = dateTime;

          }

      }

  function OnFailure(error) {

          alert(error);

      }

</script>

aspx page:

calling javascript function when focus on text box

<asp:TextBox ID="txtid" runtat="server" onfocus="getval();">

WebService5.asmx.cs page

[WebMethod(EnableSession = true)]

 public string getseeestionval(int theValue)

        {

     return "s";


         }

//second way --> testing with string type I mean passing hidden value which is string type. this does not invoke

NOTE : I am getting value in hidden value. I tested in alert function. I am getting hidden value.

the method " getseeestionval. It throws internal server error.

<script type="text/javascript">



function getval() {

         var hidval = document.getElementById('<%=bid.ClientID%>').value;

         alert(hidval);

         $.ajax({

        type:"POST",

       url:"../WebService5.asmx/getseeestionval",

       data:"{'theValue':'"+hidval+"'}",   
       dataType:"json",
       contentType:"application/json; charset=utf-8",
       success:function (data) {

       OnSuccess(data.d);

        },


        error:function (xhr, status, error) {

              OnFailure(error);
              }

          });
      }


     function OnSuccess(dateTime) {

 if (dateTime) {

document.getElementById("currentDate").innerHTML = dateTime;

          }


      }

  function OnFailure(error) {

          alert(error);

     }


</script>

aspx page:



calling javascript function when focus on text box



<asp:TextBox ID="txtid" runtat="server" onfocus="getval();">



WebService5.asmx.cs page

[

WebMethod(EnableSession = true)]

 public string getseeestionval(string theValue)

        {

     return "s";

         }

how to solve this problem.