HOW TO：建立自訂功能連接器
更新：2007 年 11 月
下列程式碼範例示範如何實作自訂功能連接器。如需詳細資訊，請參閱逐步解說：建立設計階段裝飾項。
範例
在下列程式碼範例中，會說明如何衍生自 FeatureConnector<FeatureProviderType> 類別，以連接名為 DiagnosticsMenuProvider 的自訂功能提供者與名為 IDiagnosticsService 的自訂服務。
Imports System
Imports System.Windows
' The DemoButton control provides a button that
' has custom design-time behavior.
Public Class DemoButton
Inherits System.Windows.Controls.Button
End Class
using System;
using System.Windows;
namespace DemoControlLibrary
{
// The DemoButton control provides a button that
// has custom design-time behavior.
public class DemoButton : System.Windows.Controls.Button
{
}
}
Imports System
Imports Microsoft.Windows.Design.Features
Imports Microsoft.Windows.Design.Interaction
' The DiagnosticsMenuProvider class adds a context menu item
' that displays a dialog box listing the currently running and
' pending feature connectors.
<FeatureConnector(GetType(DiagnosticsFeatureConnector))> _
Public Class DiagnosticsMenuProvider
Inherits PrimarySelectionContextMenuProvider
Public Sub New()
Dim action As New MenuAction("Feature Diagnostics...")
AddHandler action.Execute, AddressOf action_Execute
Items.Add(action)
End Sub
Sub action_Execute(ByVal sender As Object, ByVal e As MenuActionEventArgs)
Dim service As IDiagnosticsService = e.Context.Services.GetRequiredService(Of IDiagnosticsService)()
service.ShowWindow()
End Sub
End Class
' The IDiagnosticsService specifies a simple interface for showing
' a FeatureManagerDiagnostics window.
Interface IDiagnosticsService
Sub ShowWindow()
End Interface
' The DiagnosticsFeatureConnector publishes the IDiagnosticsService.
Class DiagnosticsFeatureConnector
Inherits FeatureConnector(Of DiagnosticsMenuProvider)
Implements IDiagnosticsService
Dim fmdWindow As FeatureManagerDiagnostics
Public Sub New(ByVal manager As FeatureManager)
MyBase.New(manager)
Context.Services.Publish(Of IDiagnosticsService)(Me)
End Sub
' The showWindow method creates a FeatureManagerDiagnostics
' window and shows it.
Public Sub ShowWindow() Implements IDiagnosticsService.ShowWindow
If fmdWindow IsNot Nothing Then
' Show the FeatureManagerDiagnostics window.
fmdWindow.Show()
' Activate the
fmdWindow.Activate()
Else
fmdWindow = New FeatureManagerDiagnostics()
fmdWindow.Initialize(Manager)
AddHandler fmdWindow.Closed, AddressOf fmdWindow_Closed
fmdWindow.Show()
End If
End Sub
Sub fmdWindow_Closed(ByVal sender As Object, ByVal e As EventArgs)
fmdWindow = Nothing
End Sub
End Class
using System;
using Microsoft.Windows.Design.Features;
using Microsoft.Windows.Design.Interaction;
namespace DemoControlLibrary.VisualStudio.Design
{
// The DiagnosticsMenuProvider class adds a context menu item
// that displays a dialog box listing the currently running and
// pending feature connectors.
[FeatureConnector(typeof(DiagnosticsFeatureConnector))]
public class DiagnosticsMenuProvider : PrimarySelectionContextMenuProvider
{
public DiagnosticsMenuProvider()
{
MenuAction action = new MenuAction("Feature Diagnostics...");
action.Execute += new EventHandler<MenuActionEventArgs>(action_Execute);
Items.Add(action);
}
void action_Execute(object sender, MenuActionEventArgs e)
{
IDiagnosticsService service =
e.Context.Services.GetRequiredService<IDiagnosticsService>();
service.ShowWindow();
}
}
// The IDiagnosticsService specifies a simple interface for showing
// a FeatureManagerDiagnostics window.
interface IDiagnosticsService
{
void ShowWindow();
}
// The DiagnosticsFeatureConnector publishes the IDiagnosticsService.
class DiagnosticsFeatureConnector : FeatureConnector<DiagnosticsMenuProvider>,
IDiagnosticsService
{
FeatureManagerDiagnostics fmdWindow;
public DiagnosticsFeatureConnector(FeatureManager manager)
: base(manager)
{
Context.Services.Publish<IDiagnosticsService>(this);
}
#region IDiagnosticsService Members
// The showWindow method creates a FeatureManagerDiagnostics
// window and shows it.
public void ShowWindow()
{
if (fmdWindow != null)
{
fmdWindow.Show();
fmdWindow.Activate();
}
else
{
fmdWindow = new FeatureManagerDiagnostics();
fmdWindow.Initialize(Manager);
fmdWindow.Closed += new EventHandler(fmdWindow_Closed);
fmdWindow.Show();
}
}
void fmdWindow_Closed(object sender, EventArgs e)
{
fmdWindow = null;
}
#endregion
}
}
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Shapes
Imports Microsoft.Windows.Design.Features
' The FeatureManagerDiagnostics class implements a window
' that displays the running and pending feature connectors.
Partial Public Class FeatureManagerDiagnostics
Inherits Window
Private featManager As FeatureManager
Public Sub New()
InitializeComponent()
End Sub
Public Sub Initialize(ByVal manager As FeatureManager)
featManager = manager
Bind()
End Sub
Private Sub OnRefreshClick(ByVal sender As Object, ByVal e As RoutedEventArgs)
Bind()
End Sub
' Binds the activatedFeatures and pendingFeatures controls
' the FeatureManager's RunningConnectors and PendingConnectors\
' properties.
Private Sub Bind()
activatedFeatures.Items.Clear()
pendingFeatures.Items.Clear()
Dim info As FeatureConnectorInformation
For Each info In featManager.RunningConnectors
activatedFeatures.Items.Add(info)
Next info
For Each info In featManager.PendingConnectors
pendingFeatures.Items.Add(info)
Next info
End Sub
End Class
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using Microsoft.Windows.Design.Features;
namespace DemoControlLibrary.VisualStudio.Design
{
// The FeatureManagerDiagnostics class implements a window
// that displays the running and pending feature connectors.
public partial class FeatureManagerDiagnostics : Window
{
private FeatureManager featManager;
public FeatureManagerDiagnostics()
{
InitializeComponent();
}
public void Initialize(FeatureManager manager)
{
featManager = manager;
Bind();
}
private void OnRefreshClick(object sender, RoutedEventArgs e)
{
Bind();
}
// Binds the activatedFeatures and pendingFeatures controls
// the FeatureManager's RunningConnectors and PendingConnectors\
// properties.
private void Bind()
{
activatedFeatures.Items.Clear();
pendingFeatures.Items.Clear();
foreach (FeatureConnectorInformation info in
featManager.RunningConnectors)
{
activatedFeatures.Items.Add(info);
}
foreach (FeatureConnectorInformation info in
featManager.PendingConnectors)
{
pendingFeatures.Items.Add(info);
}
}
}
}
<Window
xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
xmlns:l="clr-namespace:DemoControlLibrary.VisualStudio.Design"
x:Class="FeatureManagerDiagnostics"
Title="Feature Diagnostics" WindowStartupLocation="CenterOwner" SizeToContent="Manual" Height="316" Width="448" >
<Window.Resources>
<Style x:Key="HeaderStyle" TargetType="HeaderedItemsControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="HeaderedItemsControl">
<StackPanel>
<Border Padding="5" Background="#FFDDDDDD">
<CheckBox IsChecked="True" FontWeight="Bold" Name="Expander" Content="{TemplateBinding Header}"/>
</Border>
<Border Padding="5" Name="ItemsHost">
<ItemsPresenter/>
</Border>
</StackPanel>
<ControlTemplate.Triggers>
<Trigger SourceName="Expander" Property="ToggleButton.IsChecked" Value="true">
<Setter TargetName="ItemsHost" Property="Visibility" Value="Visible" />
</Trigger>
<Trigger SourceName="Expander" Property="ToggleButton.IsChecked" Value="false">
<Setter TargetName="ItemsHost" Property="Visibility" Value="Collapsed" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<DataTemplate x:Key="FeatureInfo" DataType="l:FeatureConnectorInformation">
<StackPanel>
<Border BorderBrush="{x:Static SystemColors.ActiveCaptionBrush}" BorderThickness="0,0,0,1">
<TextBlock FontWeight="Bold" Text="{Binding Path=FeatureConnectorType}" />
</Border>
<Border Padding="15,0,0,5" TextElement.FontSize = "10">
<StackPanel>
<TextBlock FontWeight="Bold" Text="Required Services" />
<Border Padding="10,0,0,5">
<ItemsControl ItemsSource="{Binding Path=RequiredServices}" />
</Border>
<TextBlock FontWeight="Bold" Text="Required Context Items" />
<Border Padding="10,0,0,5">
<ItemsControl ItemsSource="{Binding Path=RequiredItems}" />
</Border>
</StackPanel>
</Border>
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="PendingFeatureInfo" DataType="l:FeatureConnectorInformation">
<StackPanel>
<Border BorderBrush="{x:Static SystemColors.ActiveCaptionBrush}" BorderThickness="0,0,0,1">
<TextBlock FontWeight="Bold" Text="{Binding Path=FeatureConnectorType}" />
</Border>
<Border Padding="15,0,0,5" TextElement.FontSize = "10">
<StackPanel>
<TextBlock FontWeight="Bold" Text="Missing Services" />
<Border Padding="10,0,0,5">
<ItemsControl ItemsSource="{Binding Path=PendingServices}" />
</Border>
<TextBlock FontWeight="Bold" Text="Missing Context Items" />
<Border Padding="10,0,0,5">
<ItemsControl ItemsSource="{Binding Path=PendingItems}" />
</Border>
</StackPanel>
</Border>
</StackPanel>
</DataTemplate>
</Window.Resources>
<Grid>
<ScrollViewer Margin="0,0,0,36" VerticalScrollBarVisibility="Auto">
<StackPanel>
<HeaderedItemsControl Name="pendingFeatures" Style="{StaticResource HeaderStyle}" Header="Pending Features" ItemTemplate="{StaticResource PendingFeatureInfo}" />
<HeaderedItemsControl Name="activatedFeatures" Style="{StaticResource HeaderStyle}" Header="Activated Features" ItemTemplate="{StaticResource FeatureInfo}" />
</StackPanel>
</ScrollViewer>
<Button Height="23" Margin="0,0,8,7" Click="OnRefreshClick" VerticalAlignment="Bottom" HorizontalAlignment="Right" Width="75">Refresh</Button>
</Grid>
</Window>
<Window
xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
xmlns:l="clr-namespace:DemoControlLibrary.VisualStudio.Design"
x:Class="DemoControlLibrary.VisualStudio.Design.FeatureManagerDiagnostics"
Title="Feature Diagnostics" WindowStartupLocation="CenterOwner" SizeToContent="Manual" Height="316" Width="448" >
<Window.Resources>
<Style x:Key="HeaderStyle" TargetType="HeaderedItemsControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="HeaderedItemsControl">
<StackPanel>
<Border Padding="5" Background="#FFDDDDDD">
<CheckBox IsChecked="True" FontWeight="Bold" Name="Expander" Content="{TemplateBinding Header}"/>
</Border>
<Border Padding="5" Name="ItemsHost">
<ItemsPresenter/>
</Border>
</StackPanel>
<ControlTemplate.Triggers>
<Trigger SourceName="Expander" Property="ToggleButton.IsChecked" Value="true">
<Setter TargetName="ItemsHost" Property="Visibility" Value="Visible" />
</Trigger>
<Trigger SourceName="Expander" Property="ToggleButton.IsChecked" Value="false">
<Setter TargetName="ItemsHost" Property="Visibility" Value="Collapsed" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<DataTemplate x:Key="FeatureInfo" DataType="l:FeatureConnectorInformation">
<StackPanel>
<Border BorderBrush="{x:Static SystemColors.ActiveCaptionBrush}" BorderThickness="0,0,0,1">
<TextBlock FontWeight="Bold" Text="{Binding Path=FeatureConnectorType}" />
</Border>
<Border Padding="15,0,0,5" TextElement.FontSize = "10">
<StackPanel>
<TextBlock FontWeight="Bold" Text="Required Services" />
<Border Padding="10,0,0,5">
<ItemsControl ItemsSource="{Binding Path=RequiredServices}" />
</Border>
<TextBlock FontWeight="Bold" Text="Required Context Items" />
<Border Padding="10,0,0,5">
<ItemsControl ItemsSource="{Binding Path=RequiredItems}" />
</Border>
</StackPanel>
</Border>
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="PendingFeatureInfo" DataType="l:FeatureConnectorInformation">
<StackPanel>
<Border BorderBrush="{x:Static SystemColors.ActiveCaptionBrush}" BorderThickness="0,0,0,1">
<TextBlock FontWeight="Bold" Text="{Binding Path=FeatureConnectorType}" />
</Border>
<Border Padding="15,0,0,5" TextElement.FontSize = "10">
<StackPanel>
<TextBlock FontWeight="Bold" Text="Missing Services" />
<Border Padding="10,0,0,5">
<ItemsControl ItemsSource="{Binding Path=PendingServices}" />
</Border>
<TextBlock FontWeight="Bold" Text="Missing Context Items" />
<Border Padding="10,0,0,5">
<ItemsControl ItemsSource="{Binding Path=PendingItems}" />
</Border>
</StackPanel>
</Border>
</StackPanel>
</DataTemplate>
</Window.Resources>
<Grid>
<ScrollViewer Margin="0,0,0,36" VerticalScrollBarVisibility="Auto">
<StackPanel>
<HeaderedItemsControl Name="pendingFeatures" Style="{StaticResource HeaderStyle}" Header="Pending Features" ItemTemplate="{StaticResource PendingFeatureInfo}" />
<HeaderedItemsControl Name="activatedFeatures" Style="{StaticResource HeaderStyle}" Header="Activated Features" ItemTemplate="{StaticResource FeatureInfo}" />
</StackPanel>
</ScrollViewer>
<Button Height="23" Margin="0,0,8,7" Click="OnRefreshClick" VerticalAlignment="Bottom" HorizontalAlignment="Right" Width="75">Refresh</Button>
</Grid>
</Window>
Imports System
Imports DemoControlLibrary
Imports Microsoft.Windows.Design.Metadata
Imports Microsoft.Windows.Design.Features
' Container for any general design-time metadata to initialize.
' Designers look for a type in the design-time assembly that
' implements IRegisterMetadata. If found, designers instantiate
' this class and call its Register() method automatically.
Friend Class Metadata
Implements IRegisterMetadata
Public Sub Register() Implements IRegisterMetadata.Register
Dim builder As New AttributeTableBuilder()
InitializeAttributes(builder)
MetadataStore.AddAttributeTable(builder.CreateTable())
End Sub
Private Sub InitializeAttributes(ByVal builder As AttributeTableBuilder)
builder.AddCallback(GetType(DemoButton), AddressOf AddButtonAttributes)
End Sub
Private Sub AddButtonAttributes(ByVal builder As AttributeCallbackBuilder)
builder.AddCustomAttributes(New FeatureAttribute(GetType(DiagnosticsMenuProvider)))
End Sub
End Class
' <//snippet101>
using System;
using DemoControlLibrary;
using Microsoft.Windows.Design.Metadata;
using Microsoft.Windows.Design.Features;
namespace DemoControlLibrary.VisualStudio.Design
{
// Container for any general design-time metadata to initialize.
// Designers look for a type in the design-time assembly that
// implements IRegisterMetadata. If found, designers instantiate
// this class and call its Register() method automatically.
internal class Metadata : IRegisterMetadata
{
public void Register()
{
AttributeTableBuilder builder = new AttributeTableBuilder();
InitializeAttributes(builder);
MetadataStore.AddAttributeTable(builder.CreateTable());
}
private void InitializeAttributes(AttributeTableBuilder builder)
{
builder.AddCallback(typeof(DemoButton), AddButtonAttributes);
}
private void AddButtonAttributes(AttributeCallbackBuilder builder)
{
builder.AddCustomAttributes(
new FeatureAttribute(typeof(DiagnosticsMenuProvider))
);
}
}
// <//snippet101>
}
<Window x:Class="Window1"
xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
xmlns:c="clr-namespace:DemoControlLibrary;assembly=DemoControlLibrary"
Title="Window1" Height="300" Width="300">
<Grid>
<c:DemoButton />
</Grid>
</Window>
<Window x:Class="DemoApplication.Window1"
xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
xmlns:c="clr-namespace:DemoControlLibrary;assembly=DemoControlLibrary"
Title="Window1" Height="300" Width="300">
<Grid>
<c:DemoButton />
</Grid>
</Window>
DemoButton 類別衍生自 Button，提供附加設計階段中繼資料的類別。
DiagnosticsMenuProvider 類別會加入顯示 FeatureManagerDiagnostics 視窗的內容功能表項目。
FeatureManagerDiagnostics 類別會實作視窗，以顯示執行中和暫止的功能連接器。
Metadata 類別會使用 MetadataStore 類別，將 DiagnosticsMenuProvider 附加到 DemoButton。
編譯程式碼
在三個不同的組件中，編譯先前的範例程式碼。
編譯自訂控制項
在 Visual Studio 中，建立名為 DemoControlLibrary 的新 WPF 自訂控制項程式庫專案。
將所有出現 "CustomControl1" 的地方變更為 "DemoButton"。
將 DemoButton 類別中的現有程式碼替換成前面所列的程式碼。
建置方案。
編譯自訂功能連接器
將名為 DemoControlLibrary.VisualStudio.Design 的新 WPF 自訂控制項程式庫專案加入到方案中。
將專案的輸出路徑設定為 "..\DemoControlLibrary\bin\Debug\"。
從專案刪除 Generic.xaml。
加入下列組件的參考。
Microsoft.Windows.Design
Microsoft.Windows.Design.Extensibility
Microsoft.Windows.Design.Interaction
加入 DemoControlLibrary 專案的參考。
將所有出現 "CustomControl1" 的地方變更為 "DiagnosticsMenuProvider"。
將 DiagnosticsMenuProvider 類別中的現有程式碼替換成前面所列的程式碼。
將名為 FeatureManagerDiagnostics 的 Window (WPF) 項目加入到專案中。
將 FeatureManagerDiagnostics 類別中的現有程式碼替換成前面所列的程式碼。
將 FeatureManagerDiagnostics.xaml 中的現有 XAML 替換成前面所列的 XAML。
將名為 Metadata 的類別加入到專案中。
將 Metadata 類別中的現有程式碼替換成前面所列的程式碼。
建置方案。
編譯測試應用程式
將名為 DemoApplication 的新 WPF 應用程式專案加入至方案。
加入 DemoControlLibrary 專案的參考。
將 Window1.xaml 中的現有 XAML 替換成前面所列的 XAML。
在 [設計] 檢視中，以滑鼠右鍵按一下按鈕，然後選取 [功能診斷]。
[功能診斷] 視窗隨即出現，顯示暫止和啟動的功能連接器。
請參閱
工作
概念
參考
FeatureConnector<FeatureProviderType>