How to Replace characters at specified position and line in UNIX

sed -n -e 24p -e 24q | cut -c27-34
sed -n '24p;24q' | cut -c27-34

The -n option means 'do not print lines by default'; the 24p means print line 24; the 24q means quit after processing line 24. You could leave that out, in which case sed would continue processing the input, effectively ignoring it.

DoEvents in WPF

Below is the equivalent of Doevents in WPF

public static void DoEvents()

{

Application.Current.Dispatcher.Invoke(DispatcherPriority.Background, new ThreadStart(delegate { }));

}

If you want to do it in a WPF UserControl Library or CustomControl Library then you can do as below:

controlname.Dispatcher.Invoke(DispatcherPriority.Background, new ThreadStart(delegate { }));