窗口加載的事件處理程序：「確保事件失敗」

Question

我正在嘗試爲窗口加載添加事件處理程序的簡單任務。我使用的是visual studio 2017.當我輸入Loaded=""並使用IntelliSense添加新的事件處理程序時，出現錯誤消息「確保事件失敗」，並且沒有其他信息。哪裏不對？

XAML：

<Window x:Class="MLD_UI_1.MainWindow" 
    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" 
    xmlns:local="clr-namespace:MLD_UI_1" 
    mc:Ignorable="d" 
    Title="MainWindow" Height="350" MinHeight="700" Width="525" MinWidth="1050" 
    Loaded=""> 
    <Grid Background="{StaticResource MainBackgroundBrush}"> 
     <Grid.RowDefinitions> 
      <RowDefinition Height="10"/> 
      <RowDefinition Height="40"/> 
      <RowDefinition Height="*" MinHeight="80"/> 
      <RowDefinition Height="200"/> 
      <RowDefinition Height="10"/> 
     </Grid.RowDefinitions> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition Width="10"/> 
      <ColumnDefinition Width="*" MinWidth="100"/> 
      <ColumnDefinition Width="*" MinWidth="100"/> 
      <ColumnDefinition Width="10"/> 
     </Grid.ColumnDefinitions> 
     <Border BorderThickness="2 2 1 2" BorderBrush="Black" Grid.Column="1" Grid.Row="1" Background="{StaticResource UvGradientBrush}" CornerRadius="5 0 0 5"/> 
     <Border BorderThickness="1 2 2 2" BorderBrush="Black" Grid.Column="2" Grid.Row="1" Background="{StaticResource IrGradientBrush}" CornerRadius="0 5 5 0"/> 
     <Border BorderThickness="2 2 1 2" BorderBrush="Black" Grid.Column="1" Grid.Row="3" Background="{StaticResource GradientBrush}" CornerRadius="5 0 0 5"/> 
     <Border BorderThickness="1 2 2 2" BorderBrush="Black" Grid.Column="2" Grid.Row="3" Background="{StaticResource GradientBrush}" CornerRadius="0 5 5 0"/> 
     <StackPanel Grid.Column="1" Grid.Row="1" Orientation="Horizontal" Margin="10 0 10 0"> 
      <TextBlock Text="UV" FontFamily="Tahoma" Foreground="White" VerticalAlignment="Center" FontSize="20"/> 
     </StackPanel> 
     <StackPanel Grid.Column="2" Grid.Row="1" Orientation="Horizontal" Margin="10 0 10 0"> 
      <TextBlock Text="IR" FontFamily="Tahoma" Foreground="White" VerticalAlignment="Center" FontSize="20"/> 
     </StackPanel> 
     <Image x:Name="imagePane1" Grid.Column="1" HorizontalAlignment="Stretch" Grid.Row="2" VerticalAlignment="Stretch" Margin="2 2 2 2"/> 
     <Image x:Name="imagePane2" Grid.Column="2" HorizontalAlignment="Stretch" Grid.Row="2" VerticalAlignment="Stretch" Margin="2 2 2 2"/> 
    </Grid> 
</Window> 

Answer 1

x中的命名空間：類是不正確的;它與我後面的代碼中的命名空間不匹配：

將x:Class="MLD_UI_1.MainWindow"更改爲x:Class="MLD_UI_2.MainWindow"修復了一切。