Get and Setfocus of an element

What I am trying to do is get the last focus element before doing a refresh on my BO and set it back to the last focus value.

the idea is something like below:

//get las开发者_运维技巧t focus element
var x = Keyboard.FocusedElement;
//refresh my businessobject here
CallMethod();
//set the focus to my last element
FocusManager.SetFocusedElement(focusScope, x);

... but the problem here is after calling the refresh object method my "x" value got changed in the process.

Anyone experience this problem?

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You cannot just assign Keyboard.FocusedElement because Keyboard.FocusedElement is a reference type. So as soon as the Framework changes the Keyboard.FocusedElement, your copy changes. You will need to find a new way to identify the control that had focus before the call or try and find a deep copy solution that works.

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Why not use the Focus() method??

//get focused element
UIElement x = Keyboard.FocusedElement as UIElement;

//refresh my businessobject here
CallMethod();

//set the focus to my last element
x.Focus();

or consider using FocusManager.GetFocusedElement(focusScope)...