Load from .txt to textboxes

Question

As you see, I have 3 textbox in my form. and I have a .txt file on desktop.



How can I Load this .txt file with button1 to textboxes. I want to textbox1 get line1 from txt file, textbox2 gets line2 from txt file, textbox3 gets line3 from txt file. How can I do that? What code should I write in button1 click event.



I think I need some OpenFileDialog And StreamReader codes. but I can't do it. Help me please.

Thanks