Multiple selection lost when user right clicks on the row header in a DataGrid

Question

After selecting multiple rows, if I right click on the row, the multiple selection remains. But when I right click on the header, only that particular row is selected.

What should I do to keep the selected items as it is? 

Answer 1

The way multiple selection is supposed to work is you hold ctrl down and click another row if you want to select several.

Not right click.

If you use ctrl+click then it works whether you click header or row.

On win 8.1 if I right click a second row in a datagrid it selects just that row.

I suggest you go with ctrl + click as designed.

If you prefer to stick with what you have then you could hide the row headers using

<DataGrid x:Name="dg"
                   HeadersVisibility="Column"

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Hope that helps.

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Answer 2

I cannot reproduce your issue. If I set the SelectionMode property to Extended and the SelectionUnit property to FullRow and select several rows by clicking on them and holding down the CTRL key simultaneously and then right-click on the header no rows are deselected.

So make sure that you don't have some custom code that cases the selection to get cleared.

Obviously you need to provide a reproducable sample for further help but please add a new DataGrid with no custom code to your window (or create a new solution to test it), populate it with some sample data and try to reproduce the issue yourself first. You will probably fail just like I did and then you know there is something in your custom code that causes the selection to be cleared.

Hope that helps.

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