C# - WPF DataGrid with dynamic button on each row - Help for DataTemplateSelector

I wrote a small application, which lists some files containing XML-snippets from a folder into a DataGrid. Now I want to add a button with the label "Install" to the first column, which gives the user the possibility to install the snippet to another file. If this snippet is already included into the file, the button should change to "Uninstall". Therefore I added the following to my XAML: ````xaml ... <[login to view URL]> <local:ButtonTemplateSelector x:Key="buttonTemplateSelector"> <local:[login to view URL]> <DataTemplate> <Button x:Name="btn_installSnippet" Click="btn_installSnippet_Click">Install</Button> </DataTemplate> </local:[login to view URL]> <local:[login to view URL]> <DataTemplate> <Button x:Name="btn_uninstallSnippet" Click="btn_uninstallSnippet_Click">Uninstall</Button> </DataTemplate> </local:[login to view URL]> </local:ButtonTemplateSelector> </[login to view URL]> ... <DataGrid x:Name="dataGrid_newViews" ItemsSource="{Binding}" HorizontalAlignment="Left" Height="148" Margin="40,152,0,0" VerticalAlignment="Top" Width="685" AutoGenerateColumns="True" SelectedCellsChanged="Datagrid_SelectedCellsChanged" CanUserAddRows="false" Grid.ColumnSpan="2"> <[login to view URL]> <DataGridTemplateColumn Header="Button" CellTemplateSelector="{StaticResource buttonTemplateSelector}" /> </[login to view URL]> </DataGrid> ```` Now I have problems with the code part, where the correct DataTemplate should be selected depending on a condition. ````c# public class ButtonTemplateSelector : DataTemplateSelector { public DataTemplate InstallButtonTemplate { get; set; } public DataTemplate UninstallButtonTemplate { get; set; } public override [login to view URL] SelectTemplate(object item, [login to view URL] container) { if(!CheckIfXmlAlreadyInstalled(<data>) { return InstallButtonTemplate; } else { return UninstallButtonTemplate; } } ```` I do not know how to pass the correct values to my condition part. Who can help me?