CODEWITHSUNDEEP
c#wpfxamllistview
Nivert9
Nivert9

Reputation: 37

How to tell where an element is located on the screen

I have a few hundred elements within a listview, and I want to know which elements are on the screen and at what position. If I do a Canvas.getLeft() it simply returns zero. I want to be able to transform the item closest to the middle of the screen so that it's bigger than the others.

Upvotes: 1

Views: 336

Answers (2)

King King
King King

Reputation: 63317

If you want to get the screen coordinates of the top-left point of a ListViewItem (or any Visual), you can just use the method Visual.PointToScreen and pass in an empty Point:

var pointInScreen = yourListViewItem.PointToScreen(new Point());

Upvotes: 0

furkle
furkle

Reputation: 5059

If you wanted to get the position of your element relative to your Window, you could do the following:

Point relativePos = yourElement
    .TransformToAncestor(yourWindow)
    .Transform(new Point(0, 0));

yourWindow can be replaced with any parent visual that contains yourElement - if, for example, you wanted the position relative to the ListView, you could replace it with yourListView, etc.

Upvotes: 2

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