Web Service method name is not valid

Question

I get the following error \"Web Service method name is not valid\" when i try to call webmethod from javascript

System.InvalidOperationException: SaveBO

Answer 1

Try using this, I think datatype should be JSON

       jQuery.ajax({
            type: "POST",  // or GET
            url: "/AllService.asmx/SaveBOAT",
            data: { Pid: b },
            contentType: "application/json; charset=utf-8",
            dataType: "json"
            success: function(dd) {
                alert('Success' + dd);
            },
            error: function(dd) {
                alert('There is error' + dd.responseText);
            }
        });

And in C# Code change Pid to string

    [WebMethod]
     public static string SaveBOAT(string Pid)
     {        
      SessionManager.MemberID = Pid;
      return "";
     }