C# (CSharp) QLBanVe Kiem_Tra_Dat_Ve Examples

Example #1

        private void btVeOnline_Click(object sender, EventArgs e)
        {
            Kiem_Tra_Dat_Ve ktdv = new Kiem_Tra_Dat_Ve();

            this.Visible = false;
            ktdv.ShowDialog();
            this.Close();
        }

Example #2

        private void btVeOnline_Click(object sender, EventArgs e)
        {
            Form frm = Application.OpenForms["Kiem_Tra_Dat_Ve"];

            if (frm == null)
            {
                frm = new Kiem_Tra_Dat_Ve();
            }
            this.Hide();
            frm.Show();
        }