Question

I have a ListView on my WPF window, and I have a button that is suppose to select all. First how do you get the button to do select all the items in the listview.

Secondly, I need my ViewModel to then go through all the selected items. How do I obtain this information in my ViewModel?

I’ve read you can do this with IsSelected property but has a bug, where the local property overrides the binding property so if it has already been selected before then it doesn’t appear to be selected again – or something like that. It seems convoluted. The blog that looks into this problem

Then I’ve read this blog Data binding to selected items which also seems very convoluted.

I would like to know if it has to be that convoluted and that those examples are the only way forward.

XAML:

        <ListView Name="sources_ListView" Grid.RowSpan="1" ItemsSource="{Binding Path=Sources}">
            <ListView.View>
                <GridView>
                    <GridViewColumn Width="290" Header="Name">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding Path=OriginalPath}" />
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                    <GridViewColumn Width="80" Header="Type">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding Path=Type}" />
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                </GridView>
            </ListView.View>
        </ListView>

<Button Grid.Row="0" Grid.Column="0" Content="Select All" Name="selectAllSources_Button" Margin="3" />
<Button Grid.Row="0" Grid.Column="1" Content="Deselect All" Name="deselectAllSources_Button" Margin="3" />
<Button Grid.Row="0" Grid.Column="3" Content="Remove Selected" Name="removeSelected_Button" Margin="3" Width="100" HorizontalAlignment="Right" />

Answer 1

@RV1987 Thanks for your answer, that was definately a big part of it. However for the rest of it I found this blog which detailed exactly how to do it with source code. Definitely a worth while read.

Bad Entropy Blog

Thanks