public static FrmCalendar GetSingleton()
{
if (frm == null || frm.IsDisposed)
{
frm = new FrmCalendar();
}
return(frm);
}
private void tsmiWorkCalendar_Click(object sender, EventArgs e)
{
//{
// if (Application.OpenForms["FrmCalendar"] != null)
// {
// Application.OpenForms["FrmCalendar"].Show();
// }
// else
// {
// FrmCalendar frm = new FrmCalendar();
// frm.MdiParent = this;
// frm.Show();
// }
//}
FrmCalendar frm = FrmCalendar.GetSingleton();
frm.MdiParent = this;
frm.Show();
frm.Activate();
}
private void FrmCalendar_FormClosing(object sender, FormClosingEventArgs e)
{
frm = null;
}