c# - 如何将用户控件放入文档查看器中？

Question

是否可以将用户控件放入文档查看器中？如果可能的话，会怎样？

Answer 1

您可以使用以下..

编辑
添加了一个Grid，将其Width/Height绑定(bind)到FixedPageActualWidth/ActualHeight实现居中

<DocumentViewer>
    <FixedDocument>
        <PageContent>
            <FixedPage HorizontalAlignment="Center">
                <Grid Width="{Binding RelativeSource={RelativeSource AncestorType={x:Type FixedPage}},
                                      Path=ActualWidth}"
                      Height="{Binding RelativeSource={RelativeSource AncestorType={x:Type FixedPage}},
                                       Path=ActualHeight}">
                    <local:MyUserControl HorizontalAlignment="Center"/>
                </Grid>
            </FixedPage>
        </PageContent>
    </FixedDocument>
</DocumentViewer>

不幸的是，Visual Studio 2010 设计器在这里损坏，您将收到一条消息，指出“属性‘pages’不支持‘PageContent’类型的值。
此处报告:WPF FixedDocument object doesn't allow PageContent children

作为解决方法，您可以在代码隐藏中加载它

Xaml

<DocumentViewer>
    <FixedDocument Loaded="FixedDocument_Loaded"/>
</DocumentViewer>

代码隐藏

private void FixedDocument_Loaded(object sender, RoutedEventArgs e)
{
    FixedDocument fixedDocument = sender as FixedDocument;

    MyUserControl myUserControl = new MyUserControl();
    myUserControl.HorizontalAlignment = HorizontalAlignment.Center;
    myUserControl.VerticalAlignment = VerticalAlignment.Center;

    Grid grid = new Grid();            
    grid.Children.Add(myUserControl);

    FixedPage fixedPage = new FixedPage();
    fixedPage.Children.Add(grid);

    Binding widthBinding = new Binding("ActualWidth");
    widthBinding.Source = fixedPage;
    Binding heightBinding = new Binding("ActualHeight");
    heightBinding.Source = fixedPage;
    grid.SetBinding(Grid.WidthProperty, widthBinding);
    grid.SetBinding(Grid.HeightProperty, heightBinding);

    PageContent pageContent = new PageContent();
    (pageContent as IAddChild).AddChild(fixedPage);

    fixedDocument.Pages.Add(pageContent);
}