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抱歉,这个问题不是很笼统......

我有一个 ListView,我必须从后面的代码中填充,并且这个 ListView 还需要从后面的代码中获取它的 GridViewColumn。

对于字符串,建立连接并不难,但现在我不想在 ListView 中创建一个表示布尔值的 Ellipse。

XAML 中的代码相当简单,但我无法将其转换为 c# 代码。

以下是部分 XMAL 代码:

<ResourceDictionary>
    <BooleanToVisibilityConverter x:Key="BoolToVisibility" />
    <DataTemplate x:Key="templateAdmin">
        <DockPanel>
            <Ellipse Width="8" Height="8" Visibility="{Binding Path=isAdmin, Converter={StaticResource BoolToVisibility}}" Fill="Black"/>
        </DockPanel>
    </DataTemplate>
</ResourceDictionary>

<ListView>
    <ListView.View>
        <GridView>
            <GridViewColumn DisplayMemberBinding="{Binding LastName}" Header="Last Name"/>
            <GridViewColumn CellTemplate="{StaticResource templateAdmin}"
                <GridViewColumnHeader">
                    <TextBlock Text="S"/>
                </GridViewColumnHeader>
            </GridViewColumn>
        </GridView>
    </ListView.View>
</ListView>

到目前为止,我已经做到了这一点:XAML:

<local:SortableListView >
    <ListView.View>
        <GridView x:Name="GroupListGridView" />
    </ListView.View>
</local:SortableListView>

在代码中,我有一个Collection<GridViewColumn> GridViewColumns循环遍历并将所有项目添加到GroupListGridView. 我有一个功能来填充GridViewColumns集合:

private void CreateGridViews()
{
    //Creating the Text was easy!
    GridViewColumns.add(new GridViewColumn(){ Header = "LastName", DisplayMemberBinding = new Binding("LastName") });

    //Creating the Ellipse was harder!
    GridViewColumn gvc = new GridViewColumn();
    DataTemplate dt = new DataTemplate();

    gvc.DisplayMemberBinding = new Binding("isAdmin");
    FrameworkElementFactory fef = new FrameworkElementFactory(typeof(Ellipse));
    fef.SetValue(Ellipse.WidthProperty, 8.0D);
    fef.SetValue(Ellipse.HeightProperty, 8.0D);
    fef.SetValue(Ellipse.FillProperty, new System.Windows.Media.SolidColorBrush(System.Windows.Media.Colors.Black));

    //I'm guessing that somewhere here there should be some binding to the visibility property and some sort of conversion done... But I can't figure out how!

    dt.VisualTree = fef;
    gvc.CellTemplate = dt;
    GridViewColumns.Add(gvc);
}

我认为我并没有那么远……只是我无法弄清楚最后的步骤!

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1 回答 1

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缺少的行是:

var ellipseVisBinding = new Binding("isAdmin");
ellipseVisBinding.Converter = new BooleanToVisibilityConverter();

fef.SetBinding(Ellipse.VisibilityProperty, ellipseVisBinding);

(我注意到您已从代码版本中排除模板中的 DockPanel,因此我也将其删除)

于 2012-11-14T10:29:51.807 回答