How to access WPF MainWindow Controls from my own .cs file

Question

I am a NOVICE and am very much struggling with what seems should be a very simple task. How do I modify a property of a MainWindow TextBlock, from ano

Answer 1

As for why it won't compile, I will assume the compiler error you are getting is...

An object reference is required for the non-static field, method, or property 'TestApp1.MainWindow.TextBlock1'

This happens because you are trying to access an TextBlock1 as if it were static. As @JeffRSon stated, create an instance of your MainWindow class first.

// Create an instance of MainWindow
var mainWindow = new MainWindow();
mainWindow.TextBlock1.Text = "Setting Text from My Program";

I assume you may want to display the window as well...

mainWindow.ShowDialog();