我在动态创建的 viewModel 中有 MdiContainer:
public MainWindowViewModel()
{
MdiContainer = new TabbedMdiContainer();
}
public TabbedMdiContainer MdiContainer { get; private set; }
在 Xaml 中,我将此容器的内容设置为 mdihost:
<docking:TabbedMdiHost x:Uid="ALTabbedMdiHost" Grid.Row="1" IsEnabled="True" Content="{Binding MdiContainer}" IsCloseButtonOnTab="False"/>
当我使用背景图像创建动态新选项卡时,我希望该图像填充 mdiContainer 的高度和宽度。为此,我对图像的高度和宽度进行了绑定。
var height = new Binding("ActualHeight") { Source = MdiContainer, IsAsync = true};
var width = new Binding("ActualWidth") { Source = MdiContainer ,IsAsync = true};
_img.SetBinding(FrameworkElement.HeightProperty, height);
_img.SetBinding(FrameworkElement.WidthProperty, width);
问题是 height 包括 MdiContainer height和 header height,我需要没有 header height 的 MdiContainer height。
所以我在不同的类中创建了转换器:
public class ImageSizeConvertor : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return ((double) value - 1000);
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
但是当我尝试将转换器添加到绑定值时:
var height = new Binding("ActualHeight") { Source = MdiContainer, IsAsync = true, Converter = ImageSizeConvertor};
我得到错误Class name is not valid at this point。我该如何解决?