private void btnManageStock_Click(object sender, EventArgs e)
{
frmManageStock obj = frmManageStock.getInstance(empID);
obj.Show();
obj.BringToFront();
}
public static frmManageStock getInstance(string empID)
{
if (instance == null || instance.IsDisposed)
{
instance = new frmManageStock(empID);
}
return(instance);
}