try this code
using System;
using System.Data
public partial class_Default : System.Web.UI.Page
{
protected void Page_Load(object sender,EventArgs e)
{
if(!IsPostBack)
BindGrid();
}
private void BindGrid()
{
DataTable table = GetData();
grdClient.DataSource = table;
grdClient.DataBind();
}
private static DataTable GetData()
{
DataTable table = new DataTable90;
table.Columns.add("janAmount",typeof(decimal));
table.Columns.add("FebAmount",typeof(decimal));
table.Columns.add("marAmount",typeof(decimal));
table.Rows.add(0,0,0);
return table;
}
}