Create a datagrid data column/template column/button event manually + simple data operation class (asp.net)

1) operation class for creating datagrid data columns, template columns, and buttons:
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 of the DataGridColumn.
/// </Summary>
Public class DataGridCols
{
Public void DataGridColumn ()
{
//
// TODO: add the 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 ();