Defines constants that specify whether single or multiple item selections are supported by a DataGrid control.
Assembly: PresentationFramework (in PresentationFramework.dll)
The SelectionMode and SelectionUnit properties together determine how users can select items in a DataGrid. For example, if the SelectionMode is and the SelectionUnit is Cell, the user can select one cell at a time in the DataGrid.
In mode, select multiple items by holding down the SHIFT key to extend the selection from an anchor point or the CTRL key to individually select additional items.