问题是下面的代码应该将UserControl
传递给Modal(也是UserControl
)不起作用。它看起来很简单,我必须在这里遗漏一些小东西。
这是代码
XAML:
<UserControl x:Class="Test.UserControls.Modal"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006">
<Grid>
....
<ContentControl Content="{Binding PrimaryElement, ElementName=self}" />
</Grid>
<UserControl x:Class="Test.UserControls.SimpleUserControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006">
<Grid>
<Label>Test</Label>
</Grid>
</UserControl>
C#:
namespace Test.UserControls
{
public partial class Modal: UserControl
{
public static readonly DependencyProperty PrimaryElementPropery =
DependencyProperty.Register("PrimaryElement", typeof(UserControl), typeof(Modal), new FrameworkPropertyMetadata
{
BindsTwoWayByDefault = false
});
public UserControl PrimaryElement
{
get { return (UserControl)GetValue(PrimaryElementPropery); }
set { SetValue(PrimaryElementPropery, value); }
}
public Modal (UserControl userControl)
{
// userControl is SimpleUserControl
PrimaryElement = userControl;
InitializeComponent();
}
}
}
结果,模态显示但其中没有SimpleUserControl
。绑定有问题。
答案 0 :(得分:0)
我解决了我的问题,这是愚蠢的。 SimpleUserControl中缺少宽度和高度。元素显示但没有宽度和高度。