Gridview Problem

Question

Helo, i want to update Gridview Asp.net using C#  Date not Updated please Help

 

///Gridview///

 

<asp:GridView ID="GridView1" runat="server" DataKeyNames="ID"

onrowdeleting="GridView1_RowDeleting" onrowediting="GridView1_RowEditing"

onrowupdating="GridView1_RowUpdating" onrowupdated="GridView1_RowUpdated">

<Columns>

<asp:CommandField ShowEditButton ="true" />

<asp:CommandField ShowDeleteButton= "true" />

</Columns>

</asp:GridView>

///GridView Updating Code///

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

{

String ID = GridView1.Rows[e.RowIndex].Cells[0].Text;

String ClassName = GridView1.Rows[e.RowIndex].Cells[1].Text;

obj.con.Open();

obj.qry = "update Classreg set ClassName=@ClassName where ID=@ID";

obj.cmd = new SqlCommand(obj.qry, obj.con);

obj.cmd.Parameters.AddWithValue("ClassName", TextBox2.Text);

obj.cmd.Parameters.AddWithValue("ID", TextBox1.Text);

obj.cmd.ExecuteNonQuery();

obj.con.Close();

Response.Write(@"<script language='javascript'>alert('Record Updated.')</script>");

filldata();

}

 

 

 

 

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

{

GridView1.EditIndex = e.NewEditIndex;

filldata();

}