Button Command doesn't getting executed in DataGridTemplateColumn

[Reza-Noei]

Describe the bug

I have a DataGrid defined as below:

<toolkit:DataGrid x:Name="dataGrid"
                  ItemsSource="{x:Bind ViewModel.Tests, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                  MinHeight="500"
                  AreRowDetailsFrozen="False"
                  AreRowGroupHeadersFrozen="True"
                  AutoGenerateColumns="False"
                  CanUserSortColumns="True"
                  ColumnHeaderHeight="40"
                  FrozenColumnCount="0"
                  RowDetailsVisibilityMode="Collapsed"
                  RowGroupHeaderPropertyNameAlternative="Range">
    <toolkit:DataGrid.Columns>
        <toolkit:DataGridTemplateColumn Header="Records (count)" Tag="RecordsCount" Width="150">
            <toolkit:DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Text="{Binding RecordsCount}"/>
                </DataTemplate>
            </toolkit:DataGridTemplateColumn.CellTemplate>
        </toolkit:DataGridTemplateColumn>
        <toolkit:DataGridTemplateColumn  Width="184">
            <toolkit:DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <StackPanel HorizontalAlignment="Right" Orientation="Horizontal">
                        <!-- Click event works but command doesn't getting executed -- >
                        <Button Width="40" Height="40" 
                                Command="{Binding ViewModel.DeleteTestCommand, ElementName=testPage}"
                                CommandParameter="{Binding Id}">
                        </Button>
                        <Button Width="40" Height="40"
                                Command="{Binding ViewModel.EditTestCommand, ElementName=testPage}"
                                CommandParameter="{Binding Id}">
                        </Button>
                    </StackPanel>
                </DataTemplate>
            </toolkit:DataGridTemplateColumn.CellTemplate>
        </toolkit:DataGridTemplateColumn>
    </toolkit:DataGrid.Columns>
</toolkit:DataGrid>

As you can see, I have two button with commands EditTestCommand and DeleteTestCommand. These commands aren't working when user clicks on those buttons.

I can use Button's click event instead. But I don't know why Commands aren't working.

public partial class TestsPageViewModel : ObservableRecipient
{
    public IRelayCommand<int> EditTestCommand { get; }

    public IRelayCommand<int> DeleteTestCommand { get; }

    public TestsPageViewModel(ITestsQueryService testsQueryService, INavigationService navigationService)
    {
        EditTestCommand = new RelayCommand<int>(EditTest);
        DeleteTestCommand = new RelayCommand<int>(DeleteTest);
       
        Tests = new ObservableCollection<TestModel>(); //(Some tests here);
    }

    public void DeleteTest(int id)
    {
        //var test = Tests.First(P => P.Id == id);
    }

    public void EditTest(int id)
    {
        //var test = Tests.First(P => P.Id == id);
    }

    public ObservableCollection<TestModel> Tests 
    { 
        get => _tests;
        set => SetProperty(ref _tests, value); 
    }
}

and TestModel contains:

public int Id { get; set; }
public int RecordCount { get; set; } , ....

As I mentioned in the Xaml Click event works for buttons but Commands aren't working at all.

In my Page class I have a property of Type PageViewModel (named ViewModel) which contains an ObservableCollection of type TestModel

Regression

"CommunityToolkit.WinUI.UI.Controls.DataGrid" Version="7.1.2"

Reproducible in sample app?

• [X] This bug can be reproduced in the sample app.

Steps to reproduce

Run whatever I've attached in the bug description.

Expected behavior

I expected to see button commands working.

Screenshots

No response

Windows Build Number

• [ ] Windows 10 1809 (Build 17763)
• [ ] Windows 10 1903 (Build 18362)
• [ ] Windows 10 1909 (Build 18363)
• [X] Windows 10 2004 (Build 19041)
• [ ] Windows 10 20H2 (Build 19042)
• [ ] Windows 10 21H1 (Build 19043)
• [ ] Windows 11 21H2 (Build 22000)
• [ ] Other (specify)

Other Windows Build number

No response

App minimum and target SDK version

• [X] Windows 10, version 1809 (Build 17763)
• [ ] Windows 10, version 1903 (Build 18362)
• [ ] Windows 10, version 1909 (Build 18363)
• [ ] Windows 10, version 2004 (Build 19041)
• [ ] Other (specify)

Other SDK version

No response

Visual Studio Version

2022

Visual Studio Build Number

17.6.2

Device form factor

Desktop

Nuget packages

Additional context

No response

Help us help you

Yes, but only if others can assist.