private void add_Click(object sender, EventArgs e)
{
hall_change f = new hall_change();
f.Show();
this.Close();
}
private void cha_Click(object sender, EventArgs e)
{
string[] arrayClient = new string[dataGridView1.ColumnCount];
for (int i = 0; i < dataGridView1.ColumnCount; i++)
{
arrayClient[i] = dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[i].Value.ToString();
}
hall_change f = new hall_change(arrayClient);
f.Show();
this.Close();
}