Index was out of range

Question

Index was out of range. Must be non-negative and less than the size of the collection.

Parameter name: index

 

This is my code:

private SqlConnection conn = new SqlConnection(@"Data Source=ADMIN-PC\SQLEXPRESS;Initial Catalog=task;User ID=sa;Password=ups");

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack) {

gvbind();

}

}

protected void gvbind() {

conn.Open();

SqlCommand cmd = new SqlCommand("Select * from Customers", conn);

SqlDataAdapter da = new SqlDataAdapter(cmd);

DataSet ds = new DataSet();

da.Fill(ds);

conn.Close();

if (ds.Tables[0].Rows.Count > 0) {

GridView1.DataSource = ds;

GridView1.DataBind();

} else {

ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());

GridView1.DataSource = ds;

GridView1.DataBind();

int columncount = GridView1.Rows[0].Cells.Count;//error occured in this line

GridView1.Rows[0].Cells.Clear();

GridView1.Rows[0].Cells.Add(new TableCell());

GridView1.Rows[0].Cells[0].ColumnSpan = columncount;

GridView1.Rows[0].Cells[0].Text = "No Records Found";

}