Delete is not working

private void button2_Click(object sender, EventArgs e)
        {
            con.Open();
            
            OleDbCommand delcmd = new OleDbCommand();
            //if (dataGridView1.Rows.Count > 1 && dataGridView1.SelectedRows[0].Index != dataGridView1.Rows.Count-1)
            if(dataGridView1.SelectedRows.Count > 0 && dataGridView1.SelectedRows[0].Index!=dataGridView1.Rows.Count-1)
            
            {
                delcmd.CommandText = "delete from table123 where Idno=" + dataGridView1.SelectedRows[0].Cells[0].Value.ToString() + "";
               
                delcmd.Connection = con;
                delcmd.ExecuteNonQuery();
             
                dataGridView1.Rows.RemoveAt(dataGridView1.SelectedRows[0].Index);
                MessageBox.Show("Row Deleted");
                bind();
                clear();
            }
else
{
Messagebox.show("can’t delete");
}
con.close();
                    }