Single Instance Form in a MDI application

Rafał Klepacz

0/5 (0 vote)

Sep 30, 2011

CPOL

8381

private void OpenForm() where T : Form, new(){ T frm = (T)new List(this.MdiChildren).Find(f => f is T) ?? new T() { MdiParent = this }; frm.Show(); frm.Focus();}and usageOpenForm();

private void OpenForm<T>() where T : Form, new()
{
    T frm = (T)new List<Form>(this.MdiChildren).Find(f => f is T) ?? new T() { MdiParent = this };

    frm.Show();
    frm.Focus();
}

OpenForm<NewForm>();