C# MVVM Select row and run command

Question

I have this kind of problem. I normally select row in datagrid by left or right mouse click. But I need on right click run command. I use this code

<DataGrid.InputBindings> <MouseBinding Command="{Binding ShowDWClickOnRightButton}" MouseAction="RightClick" CommandParameter="{Binding ElementName=myDataGrid, Path=SelectedItem}"/> </DataGrid.InputBindings>

But this not working, because in command parameter I have null (no selected Item). Can you please give me some advice how to solve this?

Thank you

I have written a behavior, which select item on right click. It is for a TreeView, but I think you can adjust it for a GridView. Take a look: https://stackoverflow.com/a/43118460/7713750 — Rekshino, Jul 25 '17 at 06:29
I try check you solution ... i need select and run command with selected row. So hope it will be possible. — MarekJ, Jul 25 '17 at 19:38

score 0 · Answer 1 · answered Jul 24 '17 at 21:46

You cannot use SelectedItem because it is not set when right mouse button is clicked.

You can either set selectedItem before right mouse button is pressed
Call some method from your ViewModel directly from codebehind with appropriate row object: wpf:

< DataGrid Grid.Row="1" x:Name="myDataGrid" MouseRightButtonDown="myDataGrid_MouseRightButtonDown" ...

codebehind:

private void myDataGrid_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (e.OriginalSource == null) return;
            var row = ItemsControl.ContainerFromElement((DataGrid)sender, e.OriginalSource as DependencyObject) as DataGridRow;

            if (row != null)
            {
                (this.DataContext as ViewModel).SomeViewModelMethod(row.DataContext as YourRowClass);
            }
        }

Set Command in ItemTemplate like in this answer

I try check, but looking for solution with no code behind. – MarekJ Jul 25 '17 at 19:38 — MarekJ, Jul 25 '17 at 19:38

C# MVVM Select row and run command

1 Answers1