public supplier_management()
{
InitializeComponent();
if (frm == null) /*بعين قيمة لل form لو قيمتة ب null وهى تكون قيمتها الحالية */ // .......[4]
{
frm = this;
}
this.dataGridView1.DataSource = claSup.GET_ALL_Supplier();
}
private static supplier_management frm; // ......................[1]
static void frm_formclosed(object sender, FormClosedEventArgs e) // ................[2]
{
frm = null;
}
private void suppliersManagementToolStripMenuItem_Click(object sender, EventArgs e)
{
supplier_management frmsupman = new supplier_management();
frmsupman.ShowDialog();
}