CODEWITHSUNDEEP
wpfbindingfocusmanager
Twelve
Twelve

Reputation: 597

Binding to FocusManager.FocusedElement

I have application with several datagrids and export to excel command, which gets focused datagrid as a command parameter. Is it possible to bind CommandParameter to FocusManager.FocusedElement, or do I have to set them explicity?

Thanks in advance

Upvotes: 7

Views: 6630

Answers (2)

CodeNaked
CodeNaked

Reputation: 41393

Yes, you can bind to the FocusedElement. Something like:

<Button ...
    CommandParameter="{Binding (FocusManager.FocusedElement), RelativeSource={RelativeSource AncestorType={x:Type Window}}}" />

Depending on your focus scopes, you may need to change the Window to another element.

But personally, I'd setup up the command's handler to see if the parameter is null. If it is then I'd programmatically get the FocusManager.FocusedElement.

var element = parameter as DataGrid;
if (element == null)
    element = FocusManager.FocusedElement as DataGrid.

You can also search up the visual tree as needed to the get the associated DataGrid.

Upvotes: 7

Rohit Vats
Rohit Vats

Reputation: 81253

Why can't you have the CLR property on your ViewModel say "SelectedDataGrid" which you updates whenever any of your DataGrid gets Focus. Simply used that property in your code, instead of passing it from your View.

Upvotes: 1

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