如何捕获WPF中Datagrid单元的值更改事件？

Question

I'm using Datagrid to show some MySQL tables.Naturally,I expect that changes in datagrid should be reflected in MySQL table.I've write a command to handle the Cell value changed event ,however,the command did not hit:

<DataGrid x:Name="Table_DataGrid" Grid.Row="0" Grid.Column="0"  
    HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="0"
    ItemsSource="{Binding MyServerWrapViewModel.TableFromMySql,
                  Source={StaticResource Locator}}">
    <i:Interaction.Triggers>
        <i:EventTrigger EventName="TargetUpdated">
            <cmd:EventToCommand
                Command="{Binding updateCell}"/>
        </i:EventTrigger>
    </i:Interaction.Triggers>
</DataGrid>

I think that I was listening to the wrong event,because my updateCell did not hit...How do you catch cell value changed event of datagrid?

Answer 1

I've figured out a solution.

First add the related ViewModel as the DataGrid's DataContext .otherwise the compiler won't know where to find the binding command.

DataContext="{Binding MyServerWrapViewModel,Source={StaticResource Locator}}"

Then change TargetUpdated to CurrentCellChanged .

Answer 2

Why would you want to attach an event? Usually you will create a DataBinding for your Column against some Property of an object in an ObservableCollection. Changes in a Grid's cell will be directly pushed into the setter of the Property you bound to. From there you can do whatever pleases you, like writing to the db or set a modified flag.