protected void Page_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.Add("CustomerID", typeof(int));
dt.Columns.Add("Customer Names ", typeof(string));
dt.Columns.Add("Address", typeof(string));
dt.Rows.Add(new object[] { 1, "RJboy", "India" });
dt.Rows.Add(new object[] { 2, "Michael", "UK" });
dt.Rows.Add(new object[] { 3, "Abhi", "India" });
dt.Rows.Add(new object[] { 4, "kevin", "USA", });
dt.Rows.Add(new object[] { 5, "donald", "brazil" });
gvCustomers.DataSource = dt;
gvCustomers.DataBind();
}