WPF中消失的控件

我有一個現有的WPF xaml佈局，我添加了一個帶有標籤和按鈕的堆棧視圖。但是，添加它後，運行應用程序時，「列」和「佈局列」樹視圖將消失。下面是形式XAML：WPF中消失的控件

<UserControl xmlns:my="clr-namespace:MyNamespace.Controls.LayoutEditors.OrderableList" x:Class="MyNamespace.Controls.LayoutEditors.LayoutColumnsEditor" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     mc:Ignorable="d" 
     d:DesignHeight="832" d:DesignWidth="595" 
     > 
<Grid Name="Grid"> 
    <Grid> 
     <Grid.RowDefinitions> 
      <RowDefinition Height="110" /> 
      <RowDefinition Height="5" />     
     </Grid.RowDefinitions> 
     <Grid Name="gridLabels"> 
      <StackPanel Orientation="Vertical"> 
       <Label Style="{StaticResource SubHeaderLabel}" Content="Properties" HorizontalAlignment="Stretch" HorizontalContentAlignment="Left" /> 
       <StackPanel Margin="0 5" Orientation="Horizontal"> 
        <Label Content="Layout Name:" HorizontalContentAlignment="Right" Width="120" /> 
        <TextBox Width="488" HorizontalAlignment="Left" VerticalAlignment="Top" Name="EditLayoutName" LostKeyboardFocus="TextBoxLayoutNameLostFocus" MaxLength="50" /> 
       </StackPanel> 
       <StackPanel Orientation="Horizontal"> 
        <Label Content="Description:" HorizontalContentAlignment="Right" Width="120" /> 
        <TextBox Height="50" Name="EditDescription" VerticalScrollBarVisibility="Auto" Width="483" TextWrapping="WrapWithOverflow" HorizontalScrollBarVisibility="Auto" /> 
       </StackPanel> 
       <StackPanel Orientation="Horizontal" > 
        <Label Content="Search for Columns:" HorizontalContentAlignment="Right" Width="120"></Label> 
        <TextBox Height="50" Name="txtColumnName" Width="200" TextWrapping="NoWrap" HorizontalScrollBarVisibility="Hidden" TextChanged="txtColumnName_TextChanged"></TextBox> 
       </StackPanel> 
      </StackPanel> 
     </Grid> 
    </Grid> 
    <Grid Grid.Row="2" Name="gridColumns"> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition Width="300" MinWidth="40" /> 
      <ColumnDefinition Width="7" /> 
      <ColumnDefinition MinWidth="40" /> 
     </Grid.ColumnDefinitions> 
     <Grid Background="White"> 
      <Grid.RowDefinitions> 
       <RowDefinition Height="20" /> 
       <RowDefinition /> 
      </Grid.RowDefinitions> 
      <Label Grid.Row="0" Content="Columns:" Height="21" HorizontalAlignment="Stretch" HorizontalContentAlignment="Left" Name="labelColumns" VerticalAlignment="Top" Style="{StaticResource SubHeaderLabel}" /> 
      <telerik:RadTreeView Background="White" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Auto" FontSize="11" Grid.Row="1" Name="TreeColumns" HorizontalAlignment="Stretch" IsDragDropEnabled="False" IsTextSearchEnabled="True" ItemDoubleClick="TreeColumnsItemDoubleClick" IsEditable="True" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" /> 
     </Grid> 
     <GridSplitter Grid.Column="1" HorizontalAlignment="Left" Name="gridSpiliter" Width="7" Background="#FF4D6798" VerticalAlignment="Stretch" ResizeDirection="Columns" BorderBrush="#FF021E4B" BorderThickness="1" /> 
     <Grid Grid.Column="2" Name="TileViewGrid" MinWidth="40"> 
      <Grid.ColumnDefinitions> 
       <ColumnDefinition Width="174*" /> 
       <ColumnDefinition Width="114*" /> 
      </Grid.ColumnDefinitions> 
      <Grid.RowDefinitions> 
       <RowDefinition Height="20" /> 
       <RowDefinition /> 
      </Grid.RowDefinitions> 
      <Label Content="Layout Columns:" Height="21" Name="labelLauoutColumns" VerticalAlignment="Top" HorizontalContentAlignment="Left" HorizontalAlignment="Stretch" Style="{StaticResource SubHeaderLabel}" Grid.RowSpan="2" Grid.ColumnSpan="2" /> 
      <ScrollViewer Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" VerticalScrollBarVisibility="Auto" Grid.ColumnSpan="2"> 
       <my:OrderableList x:Name="ListLayoutColumns" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="White" /> 
      </ScrollViewer> 
     </Grid> 
    </Grid> 
</Grid> 
</UserControl>

來源

2012-06-28 laconicdev

對於元素添加Grid.Column和Grid.Row值。例如：

<Label Content="Layout Columns:" Height="21" Name="labelLauoutColumns" 
    VerticalAlignment="Top" HorizontalContentAlignment="Left" 
    HorizontalAlignment="Stretch" Style="{StaticResource SubHeaderLabel}" 
    Grid.RowSpan="2" Grid.ColumnSpan="2" 
    Grid.Column="0" Grid.Row="0" 
/>

事實上，確保您做到這一點，將被包含在網格中的每個 UI元素。通過這種方式，您可以確定控件是，正好是您想要它們的。

HTH！

來源

2012-06-28 20:57:30 code4life

WPF中消失的控件

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