Create DataGrid data column/Template column/button events manually + simple data manipulation class (asp.net)

1 Create a DataGrid data column/Template column/button action class:
Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Data;
Using System.Data.SqlClient;
Using System.Drawing;
Using System.Web;
Using System.Web.SessionState;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.HtmlControls;
Namespace WebTest
{
<summary>
Summary description of the DataGridColumn.
</summary>
public class Datagridcols
{
public void DataGridColumn ()
{
//
TODO: Add constructor logic here
//
}
public static void Createcols (System.Web.UI.WebControls.DataGrid datagrid1,string datafield,string headertext,int i)
{
BoundColumn cm=new BoundColumn ();
Cm. Datafield=datafield;
Cm. Headertext=headertext;
Cm. Headerstyle.width=i;
DATAGRID1.COLUMNS.ADD (CM);
}
public static void Createbutton (System.Web.UI.WebControls.DataGrid datagrid1,string commandname,string strText)
{
ButtonColumn bc=new ButtonColumn ();