我想要按照本指南进行操作:http://www.jarloo.com/excel-like-autofilter-in-wpf/在按下datagrid列标题中的按钮时添加一个小的弹出窗口。我在列标题中添加了一个过滤器按钮和图标,并将弹出窗口的放置目标设置为此按钮,但弹出窗口始终显示在整个窗口的左下角。为什么不是我的WPF Popup显示它应该在哪里
任何想法的原因是什么?
DataGrid列
<DataGridTemplateColumn.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Image Source="Images\bios.png" Width="16" Height="16"/>
<TextBlock Text="Model" TextWrapping="Wrap" Padding="3"/>
<Button Name="btnModelFilter" Margin="3,0,0,0" Click="btnModelFilter_Click">
<Button.Template>
<ControlTemplate>
<Image Source="Images\filter.png" Width="10" Height="10"/>
</ControlTemplate>
</Button.Template>
</Button>
</StackPanel>
</DataTemplate>
</DataGridTemplateColumn.HeaderTemplate>
</DataGridTemplateColumn>
弹出
<Popup Name="popModel" Placement="Bottom" PlacementTarget="{Binding ElementName=btnModelFilter}" StaysOpen="False" Width="200">
<Border Background="White" BorderBrush="Gray" BorderThickness="1,1,1,1">
<StackPanel Margin="5,5,5,15">
<StackPanel Orientation="Horizontal" Margin="0,0,0,15">
<Button Margin="0,0,0,0" Name="btnSelectAll" Click="btnSelectAll_Click">
<Button.Template>
<ControlTemplate>
<TextBlock Text="Select All" Foreground="Blue" Cursor="Hand" />
</ControlTemplate>
</Button.Template>
</Button>
<Button Margin="10,0,0,0" Name="btnUnselectAll" Click="btnUnselectAll_Click">
<Button.Template>
<ControlTemplate>
<TextBlock Text="Select None" Foreground="Blue" Cursor="Hand" />
</ControlTemplate>
</Button.Template>
</Button>
</StackPanel>
<ListBox x:Name="lstModels" BorderThickness="0">
<ListBox.ItemTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding IsChecked}" Content="{Binding Item}" Checked="ApplyFilters" Unchecked="ApplyFilters" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Border>
</Popup>