How make datagrid cell clicking not to affect the row selected?

Question

Hi all,
I made SelectionUnit as FullRow. The first column, second column, and so on, which can work well for selecting row when I clicking the cells of them.
But I want the last column to remove the affection that the whole row is selected when I click last column cell.
how to do it? thanks.
<DataGrid ItemsSource="{Binding itemSource}" AutoGenerateColumns="False" RowHeight="25" SelectionUnit="FullRow"

Answer 1

You could set the AutogenerateColumns property to false, define all columns in the XAML markup explicitly and then specify a CellTemplate for the last column and handle its MouseLeftButtonDown event to change the SelectionUnit property of the DataGrid. Here
is an example for you:
<DataGrid x:Name="dg" AutoGenerateColumns="False" RowHeight="25" SelectionUnit="FullRow">
<DataGrid.Resources>
<Style TargetType="DataGridCell">
<EventSetter Event="PreviewMouseLeftButtonDown" Handler="cell_MouseLeftButtonDown"/>
</Style>
</DataGrid.Resources>
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding A}"/>
<DataGridTextColumn Binding="{Binding B}"/>
<DataGridTextColumn Binding="{Binding C}">
<DataGridTextColumn.CellStyle>
<Style TargetType="DataGridCell">
<EventSetter Event="PreviewMouseLeftButtonDown" Handler="cell_MouseLeftButtonDownLast"/>
</Style>
</DataGridTextColumn.CellStyle>
</DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
public partial class MainWindow : Window
public MainWindow()
InitializeComponent();
List<MyItem> items = new List<MyItem>();
items.Add(new MyItem() { A = "1", B = "1", C = "1" });
items.Add(new MyItem() { A = "2", B = "2", C = "2" });
dg.ItemsSource = items;
void cell_MouseLeftButtonDownLast(object sender, MouseButtonEventArgs e)
dg.SelectionUnit = DataGridSelectionUnit.Cell;
void cell_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
dg.SelectionUnit = DataGridSelectionUnit.FullRow;
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