private void mnSqlServerSampleOp_Click(object sender, EventArgs e)
{
frmSqlServerSampleOp frm = frmSqlServerSampleOp.GetInstance();
frm.MdiParent = this;
frm.WindowState = FormWindowState.Maximized;
frm.BringToFront();
frm.Show();
}
private void frmSqlServerSampleOp_FormClosing(object sender, FormClosingEventArgs e)
{
_instance = null;
}
public static frmSqlServerSampleOp GetInstance()
{
return(_instance = _instance ?? new frmSqlServerSampleOp());
}