Linq to Sql entity framework in asp net webform part 2 | asp.net web for...

Add this in webform1.aspx



<script>

        function Getid(id)
        {

            //alert(id);
            window.location.href="update.aspx?id="+id;

        }


    </script>



------------------------------------------------

update.aspx code:

<%@ Page Title="" Language="C#" MasterPageFile="~/Site1.Master" AutoEventWireup="true" CodeBehind="update.aspx.cs" Inherits="crud.update" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">

      <div class="row" style="height:250px;border:1px inset gray;margin-bottom:20px;">
          <div class="container">
          <table class="table table-responsive">
              <tr>
                  <td>NAME</td>
                  <td>
                      <asp:TextBox ID="TextBox1" runat="server" CssClass="form-control"></asp:TextBox>
                  </td>
              </tr>

               <tr>
                  <td>Gneder</td>
                  <td>
                      <asp:DropDownList ID="DropDownList1" runat="server">
                          <asp:ListItem>--Select--</asp:ListItem>
                          <asp:ListItem>Male</asp:ListItem>
                          <asp:ListItem>Femle</asp:ListItem>
                      </asp:DropDownList>
                  </td>
              </tr>
              <tr>
                  <td colspan="2">
                      <asp:Button ID="Button1" runat="server" Text="Update" CssClass="btn btn-success" OnClick="Button1_Click" />
                  </td>
              </tr>

          </table>
              </div>

    </div>




</asp:Content>

------------------------------

using crud.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace crud
{
    public partial class update : System.Web.UI.Page
    {
        db_aspnetEntities db = new db_aspnetEntities();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {


                if (Request.QueryString["id"] != null)
                {
                    int id = Convert.ToInt32(Request.QueryString["id"]);
                    tbl_employee emp = db.tbl_employee.Where(x => x.emp_id == id).SingleOrDefault();
                    TextBox1.Text = emp.emp_name;
                    DropDownList1.SelectedValue = emp.emp_gender;

                }
                else
                {
                    Response.Redirect("~/WebForm1.aspx");
                }
            }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            int id = Convert.ToInt32(Request.QueryString["id"]);
            tbl_employee emp = db.tbl_employee.Where(x => x.emp_id == id).SingleOrDefault();
            emp.emp_name = TextBox1.Text;
            emp.emp_gender = DropDownList1.SelectedValue.ToString();
            emp.emp_modifieddate = DateTime.Now;
            db.SaveChanges();
            Response.Redirect("~/WebForm1.aspx");
        }
    }
}