本地WPF C#编程 [英] Local WPF C# Programming
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问题描述
我在C#WPF上有一个项目，我只是遵循指令并复制和粘贴指令中的代码.我在最后一部分，但不幸的是我在这一部分收到错误:
i have a project on C# WPF, im just following the instruction and copying and pasting the code from the instruction. Im on the last part but unfortunately i received error in this part:
<local:SearchPanel Grid.Column="1" Grid.Row="1"
Visibility="{Binding ElementName=MyMovieDatabaseWindow, Path=IsSearchPaneVisible, Converter={StaticResource VisibilityConverter}}"/>
错误是:
Error 1 ''local' is an undeclared prefix. Line 138, position 10.' XML is not valid. C:\Documents and Settings\xxxxx\Desktop\WPF Training Lab 1\WPF Training Lab 1\WPF Training Lab 1\MainWindow.xaml 138 10 WPF Training Lab 1
Error 2 The type 'local:SearchPanel' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built. C:\Documents and Settings\xxxx\Desktop\WPF Training Lab 1\WPF Training Lab 1\WPF Training Lab 1\MainWindow.xaml 138 10 WPF Training Lab 1
这是完整代码:
MainWindow.xaml
MainWindow.xaml
<Window x:Class="WPF_Training_Lab.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="My Movie Database" Height="Auto" Width="Auto"
Icon="Res\Reel.png"
Background="{x:Static SystemColors.ControlDarkDarkBrush}"
x:Name="MyMovieDatabaseWindow" xmlns:local="clr-namespace:WPF_Training_Lab_1">
<Window.Resources>
<ControlTemplate x:Key="NavButtonTemplate" TargetType="{x:Type Button}">
<Label Content="{TemplateBinding Property=Content}">
<Label.Resources>
<Style TargetType="{x:Type Label}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Label}">
<TextBlock> <TextBlock.Resources>
<Style TargetType="{x:Type TextBlock}">
<Setter Property="TextDecorations" Value="Underline"/>
<Setter Property="FontSize" Value="14"/>
<Setter Property="FontWeight" Value="Bold"/>
</Style>
</TextBlock.Resources>
<ContentPresenter/>
</TextBlock>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="TextBlock.TextDecorations" Value="Underline" />
</Style>
</Label.Resources>
</Label>
</ControlTemplate>
<!-- Custom Commands -->
<RoutedUICommand x:Key="Command_NavigateToSearch" Text="Search"/>
<RoutedUICommand x:Key="Command_NavigateToReview" Text="Review"/>
<RoutedUICommand x:Key="Command_NavigateToMaintain" Text="Maintain"/>
<!-- Shared ToolTips-->
<ToolTip x:Key="TT_NavigateToSearch" Content="Navigate to the Search screen"/>
<ToolTip x:Key="TT_NavigateToReview" Content="Navigate to the Review screen"/>
<ToolTip x:Key="TT_NavigateToMaintain" Content="Navigate to the Maintain screen"/>
<!-- Images/Icons -->
<Image x:Key="Image_Cut" Source="Res\Cut.png" Height="12" Width="12"/>
<Image x:Key="Image_Copy" Source="Res\Copy.png" Height="12" Width="12"/>
<Image x:Key="Image_Paste" Source="Res\Paste.png" Height="12" Width="12"/>
</Window.Resources>
<Window.CommandBindings>
<CommandBinding x:Name="CommandBinding_Close" Command="Close" CanExecute="CommandBinding_Close_CanExecute" Executed="CommandBinding_Close_Executed"/>
<CommandBinding x:Name="CommandBinding_NavToSearch" Command="{StaticResource Command_NavigateToSearch}" CanExecute="CommandBinding_NavToSearch_CanExecute" Executed="CommandBinding_NavToSearch_Executed"/>
<CommandBinding x:Name="CommandBinding_NavToReview" Command="{StaticResource Command_NavigateToReview}" CanExecute="CommandBinding_NavToReview_CanExecute" Executed="CommandBinding_NavToReview_Executed"/>
<CommandBinding x:Name="CommandBinding_NavToMaintain" Command="{StaticResource Command_NavigateToMaintain}" CanExecute="CommandBinding_NavToMaintain_CanExecute" Executed="CommandBinding_NavToMaintain_Executed"/>
</Window.CommandBindings>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="115"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="25"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!-- Menu Bar -->
<Menu Height="25" Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="0">
<MenuItem Header="_File">
<MenuItem Command="{StaticResource Command_NavigateToSearch}" Header="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}" ToolTip="{StaticResource TT_NavigateToSearch}" />
</MenuItem>
<MenuItem Header="_Edit">
<MenuItem Command="{StaticResource Command_NavigateToSearch}" Header="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}" ToolTip="{StaticResource TT_NavigateToSearch}"/>
<MenuItem Command="{StaticResource Command_NavigateToSearch}" Header="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}" ToolTip="{StaticResource TT_NavigateToSearch}"/>
<MenuItem Command="{StaticResource Command_NavigateToSearch}" Header="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}" ToolTip="{StaticResource TT_NavigateToSearch}"/>
</MenuItem>
<MenuItem Header="_Navigate">
<MenuItem Command="{StaticResource Command_NavigateToSearch}" Header="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}" ToolTip="{StaticResource TT_NavigateToSearch}"/>
<MenuItem Command="{StaticResource Command_NavigateToSearch}" Header="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}" ToolTip="{StaticResource TT_NavigateToSearch}"/>
<MenuItem Command="{StaticResource Command_NavigateToSearch}" Header="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}" ToolTip="{StaticResource TT_NavigateToSearch}"/>
</MenuItem>
</Menu>
<Border Background="AliceBlue" CornerRadius="5" Grid.Column="0" Grid.Row="1" HorizontalAlignment="Stretch" Margin="4,4,2,4">
<StackPanel HorizontalAlignment="Stretch">
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,10,0,0" Cursor="Arrow" Background="Transparent">
<Image Source="Res\search.png" Height="14" Width="14" Margin="0,0,5,0"/>
<Button Template="{StaticResource NavButtonTemplate}" HorizontalAlignment="Center" Command="{StaticResource Command_NavigateToSearch}"
Content="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}"
ToolTip="{StaticResource TT_NavigateToSearch}"
/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,10,0,0" Background="Transparent" Cursor="Arrow">
<Image Source="Res\settings_32.png" Height="14" Width="14" Margin="0,0,5,0"/>
<Button Template="{StaticResource NavButtonTemplate}" HorizontalAlignment="Center" Command="{StaticResource Command_NavigateToReview}"
Content="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}"
ToolTip="{StaticResource TT_NavigateToReview}" />
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,10,0,0" Cursor="Hand" Background="Transparent">
<Image Source="Res\gear.png" Height="14" Width="14" Margin="0,0,5,0"/>
<Button Template="{StaticResource NavButtonTemplate}" HorizontalAlignment="Center" Command="{StaticResource Command_NavigateToMaintain}"
Content="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}"
ToolTip="{StaticResource TT_NavigateToMaintain}" />
</StackPanel>
</StackPanel>
</Border>
<!-- User controls representing each of the panes the user can navigate to. -->
<local:SearchPanel Grid.Column="1" Grid.Row="1" Visibility="{Binding ElementName=MyMovieDatabaseWindow, Path=IsSearchPaneVisible, Converter={StaticResource VisibilityConverter}}"/>
</Grid>
</Window>
SearchPanel.xaml
SearchPanel.xaml
<UserControl x:Class="WPF_Training_Lab_1.SearchPanel"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
xmlns:converters="clr-namespace:WPF_Training_Lab_2.Converters"
d:DesignHeight="300" d:DesignWidth="300">
<UserControl.Resources>
<RoutedUICommand x:Key="Command_Search" Text="Search"/>
<BooleanToVisibilityConverter x:Key="boolToVisibilityConverter"/>
<converters:NotBooleanToVisibilityConverter x:Key="notTheBoolConverter"/>
<converters:ThumbnailConverter x:Key="thumbnailConverter"/>
<converters:TextConverter x:Key="textConverter" />
<converters:TmdbImageConverter x:Key="tmdbImageConverter" />
<converters:CastMemberConverter x:Key="castMemberConverter"/>
<!-- Template defining the appearance of each item in the results listbox -->
<DataTemplate x:Key="SearchResultTemplate">
<DataTemplate.Resources>
<ToolTip x:Key="tooltip">
<ToolTip.Content>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Click to see details for the movie "/>
<TextBlock Text="{Binding DbMovie.Name}"/>
</StackPanel>
</ToolTip.Content>
</ToolTip>
</DataTemplate.Resources>
<Border CornerRadius="5" Background="LightSteelBlue" BorderBrush="SteelBlue" BorderThickness="1" Margin="2,2,5,2"
MinWidth="285" ToolTip="{StaticResource tooltip}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Image Grid.RowSpan="2" Margin="3" VerticalAlignment="Top" Width="92">
<Image.Source>
<BitmapImage UriSource="{Binding DbMovie.Images, Converter={StaticResource thumbnailConverter}, ConverterParameter='poster'}"
DecodePixelWidth="92"/>
</Image.Source>
</Image>
<TextBlock Margin="3" Grid.Column="1" Grid.Row="0" Text="{Binding DbMovie.Name}" FontWeight="Bold" TextWrapping="Wrap" />
<TextBlock Margin="5,3,3,3" Grid.Column="1" Grid.Row="1" TextWrapping="Wrap" Text="{Binding DbMovie.Overview, Converter={StaticResource textConverter}}" VerticalAlignment="Top" />
</Grid>
</Border>
</DataTemplate>
</UserControl.Resources>
<UserControl.CommandBindings>
<CommandBinding x:Name="CommandBinding_Search" Command="{StaticResource Command_Search}" CanExecute="CommandBinding_SearchCanExecute"
Executed="CommandBinding_SearchExecuted"/>
</UserControl.CommandBindings>
<Grid>
<!-- Search pane at top -->
<Border x:Name="SearchPane" HorizontalAlignment="Stretch" Margin="2,4,4,4">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="4"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Border Grid.Column="0" Grid.Row="0" HorizontalAlignment="Stretch" CornerRadius="5" Background="AliceBlue" Padding="5">
<Grid>
<Image Source="Res\Search.png" Height="48" Width="48" HorizontalAlignment="Left"/>
<StackPanel Margin="0,0,0,5" HorizontalAlignment="Center">
<StackPanel Orientation="Horizontal" Margin="5">
<Label Content="Title: " FontWeight="Bold"/>
<TextBox x:Name="txtTitleSearch" Width="150" KeyUp="txtTitleSearch_KeyUp" ToolTip="Enter a movie title to search for" />
<Label Content="Year: " FontWeight="Bold" Margin="15,0,0,0"/>
<TextBox x:Name="txtYearFilter" Width="50" KeyUp="txtTitleSearch_KeyUp" ToolTip="Enter a year to narrow search results"/>
</StackPanel>
<Button x:Name="btnSearch" Content="Search" Margin="0,10,0,0" Width="75" Command="{StaticResource Command_Search}"
ToolTip="Click to perform the search"/>
</StackPanel>
<Image Source="Res\Search.png" Height="48" Width="48" HorizontalAlignment="Right"/>
</Grid>
</Border>
</Grid>
</Border>
<Border Grid.Row="2" CornerRadius="5" Background="AliceBlue" Padding="3">
<Grid VerticalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="300" MinWidth="300"/>
<ColumnDefinition Width="3"/>
<ColumnDefinition Width="0.7*"/>
</Grid.ColumnDefinitions>
<Border CornerRadius="5" BorderBrush="LightSteelBlue" BorderThickness="1" Margin="0,0,3,0" Grid.Column="0"
Visibility="{Binding HasSearchResults, Converter={StaticResource boolToVisibilityConverter}}">
<ListBox ItemsSource="{Binding SearchResults}" ItemTemplate="{StaticResource SearchResultTemplate}" Grid.Column="0" Margin="-5" MinHeight="250" MinWidth="250" Width="Auto" Background="Transparent" x:Name="lstSearchResults" Padding="5"
BorderBrush="Transparent" ScrollViewer.HorizontalScrollBarVisibility="Disabled" HorizontalContentAlignment="Stretch"/>
</Border>
<Border CornerRadius="5" BorderBrush="LightSteelBlue" BorderThickness="1" Margin="0,0,3,0" Grid.Column="0"
Visibility="{Binding HasSearchResults, Converter={StaticResource notTheBoolConverter}}">
<Label VerticalAlignment="Center" HorizontalAlignment="Center" FontWeight="Bold" FontSize="16">No Results</Label>
</Border>
<GridSplitter Grid.Column="1" Grid.Row="2" Height="Auto" Width="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="LightSteelBlue" />
</Grid>
</Border>
</Grid>
</UserControl>
我该如何解决?谢谢！
推荐答案
您在XAML文件顶部缺少"xmlns:local"属性.看起来应该像这样:
You are missing an "xmlns:local" attribute at the top of your XAML file. This should look something like:
xmlns:local="clr-namespace:YourAppNamespace"
其中YourAppNamespace是包含SearchPanel类的名称空间.
Where YourAppNamespace is the namespace that contains the SearchPanel class.
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