Disable button in WPF?

Question

I have a Button and a TextBox in my WPF app. How can I make the Button not enabled until the user enters some text in the TextBox?

Answer 1

You could subscribe to the TextChanged event on the TextBox and if the text is empty set the Button to disabled. Or you could bind the Button.IsEnabled property to the TextBox.Text property and use a converter that returns true if there is any text and false otherwise.