How to notify the user that a deletion is currently in progress?

Question

XAML

Help me please. I cannot block the form and buttons while deleting the folder and at the same time change the cursor from Arrow to Wait.
Delete with Directory.Delete("Путь каталога", true);
Tried like this

this.Cursor = Cursors.Wait;
Directory.Delete("Путь каталога", true);

but it changes the cursor after deletion, and it is necessary before deletion. Please help me how to do it.

Answer 1

It suggests itself:
If the delete operation is quite long in time, then it would be worthwhile to perform it in another thread (not in the "UI thread"):

var bw = new BackgroundWorker();
bw.DoWork += (o, eo) =>
{
  Directory.Delete("Путь каталога", true);
};
bw.RunWorkerCompleted += (o, eo) =>
{
  IsEnabled = true;
        Mouse.OverrideCursor = Cursors.Arrow;
};

IsEnabled = false;
Mouse.OverrideCursor = Cursors.Wait;
bw.RunWorkerAsync();