private void ReferenceWindow_Closed(object sender, EventArgs e) { _referenceWindow = null; }
public void RefrenceCommand() { if (null == _referenceWindow) { _referenceWindow = new ReferenceWindow(); _referenceWindow.Closed += ReferenceWindow_Closed; _referenceWindow.Owner = this; _referenceWindow.Show(); } else { _referenceWindow.Activate(); } SetFocus(); }