Canvas

<Window x:Class="Panel布局.Canvas"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Canvas" Height="300" Width="300">
    <Canvas Background="LightBlue">
        <Label Canvas.Top="30" Canvas.Left="20">Enter here:</Label>
        <TextBox Canvas.Top="30" Canvas.Left="120" Width="100"></TextBox>
        <Button Canvas.Top="70" Canvas.Left="130" Content="Click Me!" Padding="5"/>
    </Canvas>
</Window>