WPF窗口设置焦点

Question

I have a WPF Window which I only create one time and then Show() and Hide() several times. Now I am searching a way to set the focus on a element on each Show(). Where and how can I do this?

Answer 1

Just call Element.Focus() on the element you want to focus.

If you mean bring focus to the window try calling window.Activate()

Answer 2

In WPF there are two main concepts that pertain to focus: keyboard focus and logical focus. Keyboard focus refers to the element that receives keyboard input and logical focus refers to the element in a focus scope that has focus. These concepts are discussed in detail in this overview.

You can probably write you own ShowHide method by including both Window.Show/Hide and element.Focus functionalities in order to handle both in the same method.