How to Code the CRUD Operations for GRID dynamicaly Asp.net

Below U can Find the Code 

 

How to Code the CRUD Operations for GRID dynamically in Asp.net

 

please help me this 

 

Thanks

 

using log4net;

using System;

using System.Collections.Generic;

using System.Configuration;

using System.Data;

using System.Data.SqlClient;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace DynamicAspProj

{

public partial class Change : System.Web.UI.Page

{

SqlConnection _con = new SqlConnection(@"Data Source=(localdb)\MSSQLLocalDB;Initial Catalog=Revalsys;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False");

SqlCommand _cmd;

SqlDataAdapter _da;

DataSet _ds;

DataTable _dt;

protected void Page_Load(object sender, EventArgs e)

{

_con.Open();

_cmd = new SqlCommand("select* from tblEmployee", _con);

SqlDataReader rdr = _cmd.ExecuteReader();

GridView1.DataSource = rdr;

GridView1.DataBind();

_con.Close();

}

}

}