delete a selected row from gridview Exception: Index was out of range. Must be non negative and less then the size of the collection. Parameter name: INDEX

i am deleting a row from grid view my code is as follows. I got an exception i.e.

Index was out of range. Must be non negative and less then the size of the collection. Parameter name: INDEX

Code:

private void bindingNavigatorDeleteItem_Click()

{

try

{

SqlDataAdapter da;

DataSet ds = new DataSet();

SqlConnection conn = new SqlConnection(@"Data Source=HARIS\SQLEXPRESS;Initial Catalog=Nesk;Integrated Security=True");

da = new SqlDataAdapter();

SqlCommand cmd = new SqlCommand("sp_Nsk_PromoCriteriaDelete");

cmd.CommandType = CommandType.StoredProcedure;

cmd.Parameters.Add("@promoID", SqlDbType.VarChar).Value = System.Convert.ToInt32(nsk_PromoCriteriaDataGridView.SelectedRows[0].Cells[0].Value);

cmd.Connection = conn;

da.SelectCommand = cmd;

da.Fill(ds);

conn.Close();

}

catch(Exception ex)

{

MessageBox.Show(ex.Message);

}

}

Stored Procedure:

ALTER PROCEDURE [dbo].[sp_Nsk_PromoCriteriaDelete]

@PromoID varchar(20)

AS BEGIN

SET NOCOUNT ON;

delete from Nsk_PromoCriteria where PromoId = @PromoID

END