首先抱歉我的英语和对不起，我是初学者，也许我尝试做一些不可能的事情。
我的目标是创建一个UserControl，使用不同的参数重用不同的windows / pages / usercontrols中的代码。我开发了一个类来打印盒子来跟踪视频上的对象。
我的问题是编译时我收到了以下错误：
名称＆＃39; mediaBoxes＆＃39;在当前上下文中不存在
如果我改变：
<local:MediaBoxes x:Name="mediaBoxes"></local:MediaBoxes>
而不是
<local:MediaBoxes Name="mediaBoxes"></local:MediaBoxes>
我收到了以下错误：
类型名称MediaBoxes在MyModule
类型中不存在
如果我删除属性Name并且我没有调用InitVideo，所有代码都编译，并且可以执行完美..但我的播放器总是加载，因为我需要初始化实例。
简化我的代码，我有：
InfoPage.xaml
<Window x:Class="MyModule.InfoPage"
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"
xmlns:local="clr-namespace:MyModule"
mc:Ignorable="d"
d:DataContext="{d:DesignInstance local:InfoPage}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Label Grid.Row="0" Content="PlayerBoxes" />
<DockPanel Grid.Row="1" Name="containerVideo">
<local:MediaBoxes Name="mediaBoxes"></local:MediaBoxes>
</DockPanel>
</Grid>
</Window>
InfoPage.xaml.cs
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Threading;
using Fulcrum.Model;
using Genetec.Sdk;
using Genetec.Sdk.Workspace;
using MyModule.Helpers;
namespace MyModule
{
public partial class InfoPage : Window
{
#region Constructors
public InfoPage(SearchPage mainTaskUc, ODetection det)
{
InitializeComponent();
_detection = det;
mainTask = mainTaskUc;
DataContext = this;
}
#endregion
#region Public Methods
public void Initialize(Workspace workspace)
{
if (workspace == null)
throw new ArgumentNullException("workspace");
Workspace = workspace;
_sdkEngine = Workspace.Sdk;
Show();
mediaBoxes.InitVideo(mainTask.SearchSelectedClips[0], _detection, _sdkEngine);
}
#endregion
}
mediaBoxes是一个用户控件：
MediaBoxes.xaml
<UserControl x:Class="MyModule.MediaBoxes"
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"
xmlns:local="clr-namespace:MyModule"
xmlns:media="clr-namespace:Genetec.Sdk.Media;assembly=Genetec.Sdk.Media"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<UserControl.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="../Styles/Colors.xaml"></ResourceDictionary>
<ResourceDictionary Source="../Styles/Fonts.xaml"></ResourceDictionary>
<ResourceDictionary Source="../Styles/Texts.xaml"></ResourceDictionary>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</UserControl.Resources>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<DockPanel Name="containerVideo" Grid.Row="0">
<Canvas Name="canvas" Background="{StaticResource GreyDark4Brush}"
Width="{Binding ActualWidth, ElementName=mediaPlayer}"
Height="{Binding ActualHeight, ElementName=mediaPlayer}"
Visibility="Collapsed">
<media:MediaPlayer Name="mediaPlayer"
Width="{Binding ActualWidth, ElementName=containerVideo}"
Height="{Binding ActualHeight, ElementName=containerVideo}" />
<Canvas Name="CanvasBoxes" />
<Canvas Name="CanvasControls">
<TextBlock Name="plyrBoxesCameraTitle" Canvas.Top="24" Canvas.Left="24" Foreground="LightGray" />
<TextBlock Name="plyrBoxesDateTime" Canvas.Top="56" Canvas.Left="24" Foreground="LightGray" />
<Button Name="plyrBoxesBookmarkBtn" Canvas.Top="24" Canvas.Right="24">
<Button.Content>
<TextBlock FontFamily="{StaticResource MaterialIcons}" Text=""
Foreground="LightGray" />
</Button.Content>
</Button>
<Grid Canvas.Bottom="0" Canvas.Left="0"
Width="{Binding ActualWidth, ElementName=CanvasControls}">
<Grid.Resources>
<Style TargetType="Border">
<Setter Property="Padding" Value="24" />
</Style>
</Grid.Resources>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Border Grid.Column="0" HorizontalAlignment="Left">
<DockPanel>
<Button Name="plyrBoxesVolumeOnBtn">
<Button.Content>
<TextBlock FontFamily="{StaticResource MaterialIcons}" Text=""
Foreground="LightGray" />
</Button.Content>
</Button>
<Button Name="plyrBoxesVolumeOffBtn" Visibility="Collapsed">
<Button.Content>
<TextBlock FontFamily="{StaticResource MaterialIcons}" Text=""
Foreground="LightGray" />
</Button.Content>
</Button>
</DockPanel>
</Border>
<Border Grid.Column="1" HorizontalAlignment="Center">
<DockPanel>
<Button Name="plyrBoxesPlayBtn" Visibility="Collapsed">
<Button.Content>
<TextBlock FontFamily="{StaticResource MaterialIcons}" Text=""
Foreground="LightGray" />
</Button.Content>
</Button>
<Button Name="plyrBoxesPauseBtn">
<Button.Content>
<TextBlock FontFamily="{StaticResource MaterialIcons}" Text=""
Foreground="LightGray" />
</Button.Content>
</Button>
<Button Name="plyrBoxesRestartSequenceBtn">
<Button.Content>
<TextBlock FontFamily="{StaticResource MaterialIcons}" Text=""
Foreground="LightGray" />
</Button.Content>
</Button>
</DockPanel>
</Border>
<Border Grid.Column="2" HorizontalAlignment="Right">
<TextBlock Name="plyrBoxesCurrentTime" Foreground="LightGray" />
</Border>
</Grid>
</Canvas>
</Canvas>
<StackPanel Name="loadingVideoPlayer" Visibility="Visible"
HorizontalAlignment="Center"
VerticalAlignment="Center">
<TextBlock Style="{StaticResource LoadingSpinningText}" FontSize="52" Width="52" Height="52" />
<TextBlock FontSize="18" Margin="0 16">Loading Video</TextBlock>
</StackPanel>
</DockPanel>
</Grid>
</Grid>
和MediaBoxes.xaml.cs
using System;
using System.Globalization;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Threading;
using Genetec.Sdk;
namespace MyModule
{
public partial class MediaBoxes : UserControl
{
public MediaBoxes()
{
InitializeComponent();
}
private IEngine _sdkEngine;
private SearchSelectedClipModel _selectedCamera;
private ODetection _detection;
public void InitVideo(SearchSelectedClipModel selectedCamera, ODetection detection, IEngine sdkEngine)
{
_sdkEngine = sdkEngine;
_selectedCamera = selectedCamera;
_detection = detection;
...
}
非常感谢!!!
更新
好的，我发现了真正的问题..我的代码没有任何问题......但我在根路径中定义了一个与我的命名空间名称相同的类。 -.-＆＃39;
谢谢大家的帮助!!
答案 0 :(得分：0)
有些ui的东西可以有名字，有些可以。您不需要为控件命名。
您的usercontrol是一个frameworkelement，因此它将具有标准事件。 包括初始化和加载。 您可以通过XAML将其中任何一个与事件处理程序挂钩。
<local:MediaBoxes Initialized="MediaBoxes_Initialized"/>
如果你输入initialized =那么你可以接受它给你的存根事件处理程序。
答案 1 :(得分：-1)
您需要按照以下
命名<local:MediaBoxes x:Name="mediaBoxes"></local:MediaBoxes>
因为你的usercontrol'MediaBoxes'和'Window'在同一名称空间（MyModule）中，所以如果你要写下面的
<local:MediaBoxes Name="mediaBoxes"></local:MediaBoxes>
您将收到以下错误
Because 'Microsoft.VisualStudio.DesignTools.Xaml.LanguageService.Semantics.Metadata.ReflectionTypeNode' is implemented in the same assembly, you must set the x:Name attribute rather than the Microsoft.VisualStudio.DesignTools.Xaml.LanguageService.Semantics.Metadata.ReflectionPropertyNode attribute.
所以以下列方式给你usercontrol命名
<local:MediaBoxes x:Name="mediaBoxes"></local:MediaBoxes>
并在代码后面使用以下
访问它mediaBoxes.InitVideo(mainTask.SearchSelectedClips[0], _detection, _sdkEngine);