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I have a WPF DataGrid

<DataGrid AutoGenerateColumns="False"  Name="dataGrid1"  IsReadOnly="True" >
<DataGrid.Columns>
    <DataGridTextColumn Header="Site" Binding="{Binding Site}" Width="150" />
    <DataGridTextColumn Header="Subject" Binding="{Binding Subject}" Width="310" />
</DataGrid.Columns>
<DataGrid.ContextMenu>
    <ContextMenu>
        <MenuItem Header="Delete" Click="Context_Delete">
            <MenuItem.Icon>
                <Image Width="12" Height="12" Source="Images/Delete.png" />
            </MenuItem.Icon>
        </MenuItem>
    </ContextMenu>
</DataGrid.ContextMenu>
</DataGrid>

I have the click event handler as: 

private void Context_Delete(object sender, System.EventArgs e)  { }

How do I get the row on which the Context Menu was before the click? The sender object is System.Windows.Controls.MenuItem, not the DataGridRow. How do I get the DataGridRow where the Context Menu was clicked. (I set the DataGrid.ItemSource in the code behind file.)

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2 Answers

up vote 3 down vote accepted

So based on your example code, I presume you bind your DataGrid to an ObservableCollection of objects of which you bind the properties Site and Subject to the DataGridColumns.

Essentially, all you need to do is figure out what the item bound to the clicked DataGridRow is and remove that from your ObservableCollection. Here is some example code to get you started:

private void Context_Delete(object sender, RoutedEventArgs e)
{
    //Get the clicked MenuItem
    var menuItem = (MenuItem)sender;

    //Get the ContextMenu to which the menuItem belongs
    var contextMenu = (ContextMenu)menuItem.Parent;

    //Find the placementTarget
    var item = (DataGrid)contextMenu.PlacementTarget;

    //Get the underlying item, that you cast to your object that is bound
    //to the DataGrid (and has subject and state as property)
    var toDeleteFromBindedList = (YourObject)item.SelectedCells[0].Item;

    //Remove the toDeleteFromBindedList object from your ObservableCollection
    yourObservableCollection.Remove(toDeleteFromBindedList);
}
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Thank you StevenHouben this worked perfectly! – O.O. May 30 at 15:26
up vote 1 down vote

Typically, you do not deal with rows (if you do - think again about the reasons) - instead you work with view model. When you open context menu, you get your item selected, so it can be accessed via the DataGrid.SelectedItem property. However, if you really need DataGridRow - you have your DataGrid.SelectedIndex and there is a lot of answers here on SO on how to get the row. like Get row in datagrid

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Thank you morincer. I do not have much knowledge on WPF and need to read up on it once I get the time. – O.O. May 30 at 15:28

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