使用基于WCF Rest的服务插入数据

Question

我想使用基于REST的服务来输入数据。当我正在使用该服务时，我的服务没有被击中。在IE上使用网络图标时显示400错误。我的代码如下： -

//IService1.cs       
 [WebInvoke(Method = "POST", ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped)]
        [OperationContract]
        void AddEmployee(string EmpName, int Salary, string Dept);

//Service1.svc.cs
        public void AddEmployee(string EmpName, int Salary, string Dept)
        {
            //Employee emp = new Employee();
            con.Open();
            SqlCommand cmd = new SqlCommand("Insert into Emp (sEmpName,iSalary,sDept) Values('" + EmpName + "','" + Salary + "','" + Dept + "') ", con);
            cmd.ExecuteNonQuery();
            con.Close();
        }

在我的aspx页面上使用服务

       function insertEmployeeWCF() {
            var Name = $('#txt2').val();
            var Salary = $('#txt3').val();
            var Department = $('#txt4').val();

            $.ajax({
                type: "POST",
                url: "http://localhost:1626/Service1.svc/AddEmployee",
                //data: "{}",
                data: "{'EmpName':'" + Name + "','Salary':'" + Salary + "','Dept':'" + Department + "'}",
                contentType: "application/json; charset=utf-8",
                async: false,
                dataType: "json",
                success: function (response) {
                    var employee = response.d;
                    $('#<%=lbl5.ClientID%>').html("Value successfully inserted")

                }
            });

        }