Questions tagged «attached-properties»

我的XAML中有一个矩形,想Canvas.Left在后面的代码中更改其属性: <UserControl x:Class="Second90.Page" xmlns="" xmlns:x="" Width="400" Height="300" KeyDown="txt_KeyDown"> <Canvas> <Rectangle Name="theObject" Canvas.Top="20" Canvas.Left="20" Width="10" Height="10" Fill="Gray"/> </Canvas> </UserControl> 但这不起作用: private void txt_KeyDown(object sender, KeyEventArgs e) { theObject.Canvas.Left = 50; } 谁知道这样做的语法是什么?

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