Question

have a TextBox item (MyTextBox) on a TabItem control. I have code that looks as follows:

MyTextBox.Focus();
Keyboard.Focus(MyTextBox);

When I run this code through the debugger I see the following after the lines are executed:

MyTextBox.IsFocused = true
MyTextBox.IsKeyboardFocused = false

Can anyone tell me why the textbox isn’t receiving keyboard focus? It’s just a standard TextBox control that is enabled.

Answer 1

MyTextBox.IsKeyboardFocused is false because you are looking at it under debugger and the keyboard focus is probably in your Visual Studio… Try debugging focus without breakpoints (e.g. Debug.Write or trace brakepoints) to see actual values of MyTextBox.IsKeyboardFocused in runtime.

Also notice that Focus() method returns boolean value that indicates whether focus was successfully set. Does it return False in your case? If yes, I would suggest stepping into Focus() method in order to find out what is wrong.