public Global.MsgResult ShowMsgBox(Msg msg, eMsgButton msgButton)
{
// Workaround: Wenn MessageBox in OnApplyTemplate aufgerufen wird, dann findet eine Exception statt weil die Nachrichtenverarbeitungsschleife des Dispatchers noch deaktiviert ist
// Das findet man über den Zugriff auf eine interne Member heraus:
//System.Reflection.MemberInfo[] infos = typeof(Dispatcher).GetMember("_disableProcessingCount", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
Type typeDispatcher = typeof(Dispatcher);
FieldInfo fieldInfo = typeDispatcher.GetField("_disableProcessingCount", BindingFlags.NonPublic | BindingFlags.Instance);
int _disableProcessingCount = 0;
if (fieldInfo != null)
{
_disableProcessingCount = (int)fieldInfo.GetValue(this.Dispatcher);
}
if (_disableProcessingCount <= 0)
{
try
{
return(ShowMsgBoxIntern(msg, msgButton));
}
catch (InvalidOperationException /*iopEx*/)
{
ShowMsgBoxDelegate showDel = ShowMsgBoxIntern;
DispatcherOperation op = Dispatcher.BeginInvoke(showDel, DispatcherPriority.Loaded, msg, msgButton);
//op.Wait();
//return (Global.MsgResult) op.Result;
return(Global.MsgResult.None);
}
}
else
{
ShowMsgBoxDelegate showDel = ShowMsgBoxIntern;
DispatcherOperation op = Dispatcher.BeginInvoke(showDel, DispatcherPriority.Loaded, msg, msgButton);
//op.Wait();
//return (Global.MsgResult) op.Result;
return(Global.MsgResult.None);
}
}
private Global.MsgResult ShowMsgBoxIntern(Msg msg, eMsgButton msgButton)
{
VBWindowDialogMsg vbMessagebox = new VBWindowDialogMsg(msg, msgButton, this);
return(vbMessagebox.ShowMessageBox());
}
