在另一個用戶控件中添加用戶控件佔用整個空間

Question

我編程添加的用戶控件不顯示出來。

這是我的MainPage.xaml中： -

<UserControl x:Class="ScrollingEffect.MainPage" 
    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" 
    mc:Ignorable="d" 
    d:DesignHeight="300" d:DesignWidth="400"> 

    <Canvas x:Name="LayoutRoot" Background="White"> 
     <Canvas x:Name="content" Height="Auto" Width="Auto"/> 
     <Canvas Width="Auto"> 
      <StackPanel Height="27" Width="1400" Background="#B2000000"/> 
     </Canvas> 
    </Canvas> 
</UserControl> 

這是我的MainPage.xaml.cs中： -

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Net; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Documents; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Animation; 
using System.Windows.Shapes; 

namespace ScrollingEffect 
{ 
    public partial class MainPage : UserControl 
    { 
     public MainPage() 
     { 
      InitializeComponent(); 
      this.Loaded += new RoutedEventHandler(MainPage_Loaded); 
     } 

     void MainPage_Loaded(object sender, RoutedEventArgs e) 
     { 
      RedBack objRedBack = new RedBack(); 

      content.Children.Add(objRedBack); 
     } 
    } 
} 

這是我的RedBack.xaml： -

<UserControl 
    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" 
    mc:Ignorable="d" Margin="0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" 
    x:Class="ScrollingEffect.RedBack" 
    d:DesignWidth="640" d:DesignHeight="480"> 

    <Canvas x:Name="LayoutRoot"> 
     <Canvas.Background> 
      <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
       <GradientStop Color="Black" Offset="0.078"/> 
       <GradientStop Color="Red" Offset="1"/> 
      </LinearGradientBrush> 
     </Canvas.Background> 
    </Canvas> 
</UserControl> 

Answer 1

嘗試將網格用作RedBack.xaml中的主要佈局容器，然後將網格放置在網格中。