Question

I have a gridview that has and auto- generated delete button. The grid has one datakeyname and for some reason it I am getting this error : Message: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

I have looked at many tutorials and examples. This code should work right?

protected void grdBins_RowDeleting(object sender, GridViewDeleteEventArgs e)
{

    int rec_id = int.Parse(grdBins.DataKeys[e.RowIndex].Value.ToString());

     SqlCommand cmd = new SqlCommand();
     cmd.CommandText = "delete from t_run_schedule_lots  " +
                       "where rec_id = @id";

     cmd.Parameters.Add("@id", SqlDbType.Int).Value = rec_id ;

     cmd.CommandType = CommandType.Text;
     cmd.Connection = this.sqlConnection1;
     this.sqlConnection1.Open();
     //execute insert statement
     cmd.ExecuteNonQuery();
     this.sqlConnection1.Close();
     //re-populate grid */
    fill_grid();
     grdBins.EditIndex = -1;
     grdBins.DataBind(); 
     // this bit was just to see if I was capturing the ID field properly. 
    lblBins.Visible = true;
     lblBins.Text = rec_id.ToString();
}

If anyone knows a good example in C# that would make this work it would be greatly appreciated.

Answer 1

Here is what I did to get it working:

GridViewRow row = (GridViewRow)grdBins.Rows[e.RowIndex];
            Label id = (Label)row.FindControl("Label9");

             SqlCommand cmd = new SqlCommand();
             cmd.CommandText = "delete from t_run_schedule_lots  " +
                               "where rec_id = @id";

             cmd.Parameters.Add("@id", SqlDbType.Int).Value = Convert.ToInt32(id.Text) ;

Although I don’t know why the RowIndex option would not work. Anyway it is working now.