Execute simple Logic without “locking” the UI

Question

I have a dialog with some txb\'s and a button. When this button is clicked I want to change the button\'s Text, disable the button, start some Logic and then close the Window.

Answer 1

when button is clicked:

button.Enabled = false;
button.Text = "new text";
Task.Factory.StartNew(() =>
{
    // do your tasks here and close the window.
    // type your code normally like calling methods. setting variables etc...

    StaticVariable = ExampleUsingMethod();
});

if your variable needs to be assigned to UI later then you need dispatcher.for example if you want to change button inside the new thread.

Task.Factory.StartNew(() =>
{
       Dispatcher.Invoke(() => 
       {
          button.Enabled = false;
          button.Text = "new text";
       }

       StaticVariable = ExampleUsingMethod();
});