WPF Datagrid doesn't deselect hidden items

Question

I have a DataGrid with several items, and my program's logic depends on the selected rows.

When I click on a row, the usual behavior is to selected the clicked row and deselect all others. However, if I click on a row, then scroll down to the point it becomes not visible anymore, and then click on another row, it will keep the 2 rows selected.

I know that a solution using MouseDown events to manipulate the selected items would work, but I wanted to prevent doing that.

Edit: I need it to be SelectionMode="Extended".

Answer 1

如果要禁用多选行为，请将SelectionMode设置为Single

<DataGrid SelectionMode="Single"