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How to align content in a DataTemplate?

I have a list with a DataTemplate that shows the text and an "x" button next to it. I want the "X" btn to be displayed in the extreme right order, so they all appear in the same place. XML used by me:

<ListBox Name="seiveListBox" ItemsSource="{Binding}" MinWidth="80" Height="120" ScrollViewer.VerticalScrollBarVisibility="Visible" >
                                <ListBox.ItemTemplate>
                                    <DataTemplate>
                                        <StackPanel Orientation="Horizontal">
                                            <TextBlock Text="{Binding}" />
                                            <Button Name="delSeiveFromListBtn" Content="X" ToolTip="Delete" Margin="8, 0, 0, 0" Click="delSeiveFromListBtn_Click"></Button>
                                        </StackPanel>
                                    </DataTemplate>
                                </ListBox.ItemTemplate>
                            </ListBox>

I tried adding a Grid inpalce from the StackPanel but was not successful.

How can I create it or align the "x" in the list, which is located in the far right corner of each element.

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2 answers

Here I take it, use the grid as follows:

<ListBox ItemsSource="{Binding Items}"
          Width="200" HorizontalContentAlignment="Stretch">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="Auto"/>
                </Grid.ColumnDefinitions>
                <TextBlock Grid.Column="0" Text="{Binding Data}"></TextBlock>
                <Button Grid.Column="1" Content="x"></Button>
            </Grid>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>
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, HorizontalContentAlignment = "Stretch". , :

    <DataTemplate x:Key="DeletableButtonCommandTemplate">
    <Button Command="{Binding}" Margin="0,1" HorizontalContentAlignment="Stretch">
        <Grid HorizontalAlignment="Stretch">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="18"/>
            </Grid.ColumnDefinitions>
            <TextBlock Text="{Binding Caption}" HorizontalAlignment="Center" Grid.Column="0"></TextBlock>
            <shared:CrossButton Width="12" Height="12" Grid.Column="1"
                                cal:Message.Attach="[Event Click]=[DeleteCommandSource($Datacontext)]"
                                Visibility="{Binding Path=AssociatedObject.Owner, Converter={sharedConv:NotNullToVisibleConverter} }"  />
        </Grid>
    </Button>
</DataTemplate>
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