WPF DataGrid: Efficient method to obtain Row Index of a Cell

Question

There are zillions of questions all over the web, including StackOverflow (WPF DataGrid: How to Determine the Current Row Index? and WPF Datagrid cell, cellinfo and selectedcells + custom selection for example) on this topic. My problem with answers to those questions is that they need a linear search in items which is not efficient.

I noticed that DataGridCellInfo has an internal property named ItemInfo which in turn has a property named Index. This Index is exactly what I am looking for. Why is this property designed to be not public? How is the correct way of accessing it?

Please note that I want to work with SelectionUnit="Cell" and thus SelectedIndex always is equal to -1.

score 0 · Answer 1 · answered May 05 '18 at 09:36

0

Maybe I'm missing something here.
If you have datagridcellinfo for a cell.

myDataGrid.Items.IndexOf(datagridcellinfo.Item)

answered May 05 '18 at 09:36

Andy

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Using `IndexOf` is actually a linear search among all `Items` and is not efficient. – melmi May 05 '18 at 10:27

WPF DataGrid: Efficient method to obtain Row Index of a Cell

1 Answers1