private void simpleButton2_Click(object sender, EventArgs e)
{
GetPromotionDetails(txtEmployeeID.Text);
frmPromotion promotion = new frmPromotion(Promotion,this);
promotion.ShowDialog();
}
private void simpleButton4_Click(object sender, EventArgs e)
{
frmPromotion promotion = new frmPromotion(txtEmployeeID.Text);
promotion.ShowDialog();
}