ViewTechnology 列舉
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
定義設計工具所支援之一組技術的標識碼。
public enum class ViewTechnology
[System.Runtime.InteropServices.ComVisible(true)]
public enum ViewTechnology
public enum ViewTechnology
[<System.Runtime.InteropServices.ComVisible(true)>]
type ViewTechnology =
type ViewTechnology =
Public Enum ViewTechnology
- 繼承
- 屬性
欄位
| 名稱 | 值 | Description |
|---|---|---|
| Passthrough | 0 | 代表一種模式,將視圖物件直接傳送到開發環境。 檢視物件必須實作開發環境所需的任何介面。 Visual Studio 開發環境支援檢視物件,這些物件可以是 ActiveX 控制項、主動文件,或是實作透過 Visual Studio VSI(Visual Studio整合)程式提供的 |
| WindowsForms | 1 | 代表一種模式,Windows Forms 控制物件提供根設計器的顯示。 設計者主機會將開發環境文件視窗填滿 Windows Forms 控制項。 |
| Default | 2 | 規定預設的視圖技術支援。 根設計者可以回傳任何類型的物件,但該物件必須與主機技術相關的轉接器相容。 像 Visual Studio 這類主機環境提供了插入新檢視技術轉接器的方式。 Windows Forms 設計器的預設視圖物件是 Control 實例。 |
範例
以下範例示範如何在設計師中使用 ViewTechnology.Default 。 此範例是介面中提供 GetView 更大範例的一部分。
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
#using <System.Design.dll>
#using <System.dll>
using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Diagnostics;
using namespace System::Drawing;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;
namespace SampleRootDesigner
{
ref class SampleRootDesigner;
// This sample demonstrates how to provide the root designer view, or
// design mode background view, by overriding IRootDesigner.GetView().
// The following attribute associates the SampleRootDesigner designer
// with the SampleComponent component.
[Designer(SampleRootDesigner::typeid,IRootDesigner::typeid)]
public ref class RootDesignedComponent: public Component
{
public:
RootDesignedComponent(){}
};
public ref class SampleRootDesigner: public ComponentDesigner, public IRootDesigner
{
private:
ref class RootDesignerView;
// Member field of custom type RootDesignerView, a control that
// will be shown in the Forms designer view. This member is
// cached to reduce processing needed to recreate the
// view control on each call to GetView().
RootDesignerView^ m_view;
// This method returns an instance of the view for this root
// designer. The "view" is the user interface that is presented
// in a document window for the user to manipulate.
virtual Object^ GetView( ViewTechnology technology ) sealed = IRootDesigner::GetView
{
if ( technology != ViewTechnology::WindowsForms )
{
throw gcnew ArgumentException( "Not a supported view technology","technology" );
}
if ( m_view == nullptr )
{
// Some type of displayable Form or control is required
// for a root designer that overrides GetView(). In this
// example, a Control of type RootDesignerView is used.
// Any class that inherits from Control will work.
m_view = gcnew RootDesignerView( this );
}
return m_view;
}
// IRootDesigner.SupportedTechnologies is a required override for an
// IRootDesigner. WindowsForms is the view technology used by this designer.
public:
property array<ViewTechnology>^ SupportedTechnologies
{
virtual array<ViewTechnology>^ get()
{
return gcnew array<ViewTechnology> {ViewTechnology::Default};
}
}
// RootDesignerView is a simple control that will be displayed
// in the designer window.
ref class RootDesignerView: public Control
{
private:
SampleRootDesigner^ m_designer;
public:
RootDesignerView( SampleRootDesigner^ designer )
{
m_designer = designer;
BackColor = Color::Blue;
Font = gcnew System::Drawing::Font( Font->FontFamily->Name,24.0f );
}
protected:
virtual void OnPaint( PaintEventArgs^ pe ) override
{
Control::OnPaint( pe );
// Draws the name of the component in large letters.
pe->Graphics->DrawString( m_designer->Component->Site->Name, Font, Brushes::Yellow, ClientRectangle );
}
};
};
// This sample component inherits from RootDesignedComponent which
// uses the SampleRootDesigner.
public ref class RootViewSampleComponent: public RootDesignedComponent
{
public:
RootViewSampleComponent(){}
};
}
using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.Design;
namespace SampleRootDesigner
{
// This sample demonstrates how to provide the root designer view, or
// design mode background view, by overriding IRootDesigner.GetView().
// This sample component inherits from RootDesignedComponent which
// uses the SampleRootDesigner.
public class RootViewSampleComponent : RootDesignedComponent
{
public RootViewSampleComponent()
{
}
}
// The following attribute associates the SampleRootDesigner designer
// with the SampleComponent component.
[Designer(typeof(SampleRootDesigner), typeof(IRootDesigner))]
public class RootDesignedComponent : Component
{
public RootDesignedComponent()
{
}
}
public class SampleRootDesigner : ComponentDesigner, IRootDesigner
{
// Member field of custom type RootDesignerView, a control that
// will be shown in the Forms designer view. This member is
// cached to reduce processing needed to recreate the
// view control on each call to GetView().
private RootDesignerView m_view;
// This method returns an instance of the view for this root
// designer. The "view" is the user interface that is presented
// in a document window for the user to manipulate.
object IRootDesigner.GetView(ViewTechnology technology)
{
if (technology != ViewTechnology.Default)
{
throw new ArgumentException("Not a supported view technology", "technology");
}
if (m_view == null)
{
// Some type of displayable Form or control is required
// for a root designer that overrides GetView(). In this
// example, a Control of type RootDesignerView is used.
// Any class that inherits from Control will work.
m_view = new RootDesignerView(this);
}
return m_view;
}
// IRootDesigner.SupportedTechnologies is a required override for an
// IRootDesigner. Default is the view technology used by this designer.
ViewTechnology[] IRootDesigner.SupportedTechnologies
{
get
{
return new ViewTechnology[] {ViewTechnology.Default};
}
}
// RootDesignerView is a simple control that will be displayed
// in the designer window.
private class RootDesignerView : Control
{
private SampleRootDesigner m_designer;
public RootDesignerView(SampleRootDesigner designer)
{
m_designer = designer;
BackColor = Color.Blue;
Font = new Font(Font.FontFamily.Name, 24.0f);
}
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
// Draws the name of the component in large letters.
pe.Graphics.DrawString(m_designer.Component.Site.Name, Font, Brushes.Yellow, ClientRectangle);
}
}
}
}
Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Diagnostics
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Windows.Forms.Design
Namespace SampleRootDesigner
' This sample demonstrates how to provide the root designer view, or
' design mode background view, by overriding IRootDesigner.GetView().
' This sample component inherits from RootDesignedComponent which
' uses the SampleRootDesigner.
Public Class RootViewSampleComponent
Inherits RootDesignedComponent
Public Sub New()
End Sub
End Class
' The following attribute associates the SampleRootDesigner designer
' with the SampleComponent component.
<Designer(GetType(SampleRootDesigner), GetType(IRootDesigner))> _
Public Class RootDesignedComponent
Inherits Component
Public Sub New()
End Sub
End Class
Public Class SampleRootDesigner
Inherits ComponentDesigner
Implements IRootDesigner
' Member field of custom type RootDesignerView, a control that
' will be shown in the Forms designer view. This member is
' cached to reduce processing needed to recreate the
' view control on each call to GetView().
Private m_view As RootDesignerView
' This method returns an instance of the view for this root
' designer. The "view" is the user interface that is presented
' in a document window for the user to manipulate.
Function GetView(ByVal technology As ViewTechnology) As Object Implements IRootDesigner.GetView
If Not technology = ViewTechnology.Default Then
Throw New ArgumentException("Not a supported view technology", "technology")
End If
If m_view Is Nothing Then
' Some type of displayable Form or control is required for a root designer that overrides
' GetView(). In this example, a Control of type RootDesignerView is used.
' Any class that inherits from Control will work.
m_view = New RootDesignerView(Me)
End If
Return m_view
End Function
' IRootDesigner.SupportedTechnologies is a required override for an
' IRootDesigner. Default is the view technology used by this designer.
ReadOnly Property SupportedTechnologies() As ViewTechnology() Implements IRootDesigner.SupportedTechnologies
Get
Return New ViewTechnology() {ViewTechnology.Default}
End Get
End Property
' RootDesignerView is a simple control that will be displayed
' in the designer window.
Private Class RootDesignerView
Inherits Control
Private m_designer As SampleRootDesigner
Public Sub New(ByVal designer As SampleRootDesigner)
m_designer = designer
BackColor = Color.Blue
Font = New Font(Font.FontFamily.Name, 24.0F)
End Sub
Protected Overrides Sub OnPaint(ByVal pe As PaintEventArgs)
MyBase.OnPaint(pe)
' Draws the name of the component in large letters.
Dim rf As New RectangleF(ClientRectangle.X, ClientRectangle.Y, ClientRectangle.Width, ClientRectangle.Height)
pe.Graphics.DrawString(m_designer.Component.Site.Name, Font, Brushes.Yellow, rf)
End Sub
End Class
End Class
End Namespace
以下範例示範如何在設計器中使用「ViewTechnology> 列舉」。 此範例是本類別更大 LocalizationExtenderProvider 範例的一部分。
#using <system.dll>
#using <system.design.dll>
#using <system.windows.forms.dll>
#using <system.drawing.dll>
using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Diagnostics;
using namespace System::Drawing;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;
// This example demonstrates adding localization support to a component hierarchy from a
// custom IRootDesigner using the LocalizationExtenderProvider class.
namespace LocalizationExtenderProviderExample
{
// Example IRootDesigner implementation demonstrates LocalizationExtenderProvider support.
private ref class SampleRootDesigner: public IRootDesigner
{
private:
// RootDesignerView is a simple control that will be displayed in the designer window.
ref class RootDesignerView: public Control
{
private:
SampleRootDesigner^ m_designer;
IComponent^ comp;
public:
RootDesignerView( SampleRootDesigner^ designer, IComponent^ component )
{
m_designer = designer;
this->comp = component;
BackColor = Color::Blue;
Font = gcnew System::Drawing::Font( FontFamily::GenericMonospace,12 );
}
protected:
// Displays the name of the component and the name of the assembly of the component
// that this root designer is providing support for.
virtual void OnPaint( PaintEventArgs^ pe ) override
{
Control::OnPaint( pe );
if ( m_designer != 0 && comp != 0 )
{
// Draws the name of the component in large letters.
pe->Graphics->DrawString( "Root Designer View", Font, Brushes::Yellow, 8, 4 );
pe->Graphics->DrawString( String::Concat( "Design Name : ", comp->Site->Name ), gcnew System::Drawing::Font( "Arial",10 ), Brushes::Yellow, 8, 28 );
pe->Graphics->DrawString( String::Concat( "Assembly : ", comp->GetType()->AssemblyQualifiedName ), gcnew System::Drawing::Font( "Arial",10 ), Brushes::Yellow, System::Drawing::RectangleF( System::Drawing::Point( 8, 44 ), System::Drawing::Size( ClientRectangle.Width - 8, ClientRectangle.Height - 44 ) ) );
// Uses the site of the component to acquire an ISelectionService and sets the property grid focus to the component.
ISelectionService^ selectionService = dynamic_cast<ISelectionService^>(comp->Site->GetService( typeid<ISelectionService^> ));
if ( selectionService != nullptr )
{
array<IComponent^>^myArray = {m_designer->component};
selectionService->SetSelectedComponents( static_cast<Array^>(myArray) );
}
}
}
};
protected:
// RootDesignerView Control provides a full region designer view for this root designer's associated component.
RootDesignerView^ m_view;
// Stores reference to the LocalizationExtenderProvider this designer adds, in order to remove it on Dispose.
LocalizationExtenderProvider^ extender;
// Internally stores the IDesigner's component reference
IComponent^ component;
// Provides a RootDesignerView object that supports ViewTechnology.WindowsForms.
Object^ GetView( ViewTechnology technology )
{
if ( technology != ViewTechnology::WindowsForms )
{
throw gcnew ArgumentException( "Not a supported view technology", "technology" );
}
if ( m_view == nullptr )
{
// Create the view control. In this example, a Control of type RootDesignerView is used.
// A WindowsForms ViewTechnology view provider requires a class that inherits from Control.
m_view = gcnew RootDesignerView( this,this->Component );
}
return m_view;
}
property array<ViewTechnology>^ SupportedTechnologies
{
// This designer supports the WindowsForms view technology.
array<ViewTechnology>^ IRootDesigner::get()
{
ViewTechnology myArray[] = {ViewTechnology::WindowsForms};
return myArray;
}
}
public:
// Adds a LocalizationExtenderProvider for the component this designer is initialized to support.
void Initialize( IComponent^ component )
{
this->component = component;
// If no extender from this designer is active...
if ( extender == nullptr )
{
// Adds a LocalizationExtenderProvider that provides localization support properties to the specified component.
extender = gcnew LocalizationExtenderProvider( this->component->Site,this->component );
}
}
property DesignerVerbCollection^ Verbs
{
// Empty IDesigner interface property and method implementations
DesignerVerbCollection^ get()
{
return nullptr;
}
}
property IComponent^ Component
{
IComponent^ get()
{
return this->component;
}
}
void DoDefaultAction(){}
void Dispose(){}
protected:
// If a LocalizationExtenderProvider has been added, removes the extender provider.
void Dispose( bool disposing )
{
// If an extender has been added, remove it
if ( extender != nullptr )
{
// Disposes of the extender provider. The extender
// provider removes itself from the extender provider
// service when it is disposed.
extender->Dispose();
extender = nullptr;
}
}
};
// The following attribute associates the RootDesignedComponent with the RootDesignedComponent component.
[Designer(__typeof(SampleRootDesigner),__typeof(IRootDesigner))]
public ref class RootDesignedComponent: public Component
{
public:
RootDesignedComponent(){}
};
// RootViewDesignerComponent is a component associated with the SampleRootDesigner
// IRootDesigner that provides LocalizationExtenderProvider localization support.
// This derived class is included at the top of this example to enable
// easy launching of designer view without having to put the class in its own file.
public ref class RootViewDesignerComponent: public RootDesignedComponent
{
public:
RootViewDesignerComponent(){}
};
}
using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.Design;
// This example demonstrates adding localization support to a component hierarchy from a
// custom IRootDesigner using the LocalizationExtenderProvider class.
namespace LocalizationExtenderProviderExample
{
// RootViewDesignerComponent is a component associated with the SampleRootDesigner
// IRootDesigner that provides LocalizationExtenderProvider localization support.
// This derived class is included at the top of this example to enable
// easy launching of designer view without having to put the class in its own file.
public class RootViewDesignerComponent : RootDesignedComponent
{
public RootViewDesignerComponent()
{
}
}
// The following attribute associates the RootDesignedComponent with the RootDesignedComponent component.
[Designer(typeof(SampleRootDesigner), typeof(IRootDesigner))]
public class RootDesignedComponent : Component
{
public RootDesignedComponent()
{
}
}
// Example IRootDesigner implementation demonstrates LocalizationExtenderProvider support.
internal class SampleRootDesigner : IRootDesigner
{
// RootDesignerView Control provides a full region designer view for this root designer's associated component.
private RootDesignerView m_view;
// Stores reference to the LocalizationExtenderProvider this designer adds, in order to remove it on Dispose.
private LocalizationExtenderProvider extender;
// Internally stores the IDesigner's component reference
private IComponent component;
// Adds a LocalizationExtenderProvider for the component this designer is initialized to support.
public void Initialize(System.ComponentModel.IComponent component)
{
this.component = component;
// If no extender from this designer is active...
if( extender == null )
{
// Adds a LocalizationExtenderProvider that provides localization support properties to the specified component.
extender = new LocalizationExtenderProvider(this.component.Site, this.component);
}
}
// Provides a RootDesignerView object that supports ViewTechnology.WindowsForms.
object IRootDesigner.GetView(ViewTechnology technology)
{
if (technology != ViewTechnology.WindowsForms)
{
throw new ArgumentException("Not a supported view technology", "technology");
}
if (m_view == null )
{
// Create the view control. In this example, a Control of type RootDesignerView is used.
// A WindowsForms ViewTechnology view provider requires a class that inherits from Control.
m_view = new RootDesignerView(this, this.Component);
}
return m_view;
}
// This designer supports the WindowsForms view technology.
ViewTechnology[] IRootDesigner.SupportedTechnologies
{
get
{
return new ViewTechnology[] {ViewTechnology.WindowsForms};
}
}
// If a LocalizationExtenderProvider has been added, removes the extender provider.
protected void Dispose(bool disposing)
{
// If an extender has been added, remove it
if( extender != null )
{
// Disposes of the extender provider. The extender
// provider removes itself from the extender provider
// service when it is disposed.
extender.Dispose();
extender = null;
}
}
// Empty IDesigner interface property and method implementations
public System.ComponentModel.Design.DesignerVerbCollection Verbs
{
get
{
return null;
}
}
public System.ComponentModel.IComponent Component
{
get
{
return this.component;
}
}
public void DoDefaultAction()
{
}
public void Dispose()
{
}
// RootDesignerView is a simple control that will be displayed in the designer window.
private class RootDesignerView : Control
{
private SampleRootDesigner m_designer;
private IComponent comp;
public RootDesignerView(SampleRootDesigner designer, IComponent component)
{
m_designer = designer;
this.comp = component;
BackColor = Color.Blue;
Font = new Font(FontFamily.GenericMonospace, 12);
}
// Displays the name of the component and the name of the assembly of the component
// that this root designer is providing support for.
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
if( m_designer != null && comp != null )
{
// Draws the name of the component in large letters.
pe.Graphics.DrawString("Root Designer View", Font, Brushes.Yellow, 8, 4);
pe.Graphics.DrawString("Design Name : "+comp.Site.Name, new Font("Arial", 10), Brushes.Yellow, 8, 28);
pe.Graphics.DrawString("Assembly : "+comp.GetType().AssemblyQualifiedName, new Font("Arial", 10), Brushes.Yellow, new Rectangle(new Point(8, 44), new Size(ClientRectangle.Width-8, ClientRectangle.Height-44)));
// Uses the site of the component to acquire an ISelectionService and sets the property grid focus to the component.
ISelectionService selectionService = (ISelectionService)comp.Site.GetService(typeof(ISelectionService));
if( selectionService != null )
selectionService.SetSelectedComponents( new IComponent[] { m_designer.component } );
}
}
}
}
}
Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Diagnostics
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Windows.Forms.Design
' This example demonstrates adding localization support to a component hierarchy from a
' custom IRootDesigner using the LocalizationExtenderProvider class.
' RootViewDesignerComponent is a component associated with the SampleRootDesigner
' IRootDesigner that provides LocalizationExtenderProvider localization support.
' This derived class is included at the top of this example to enable
' easy launching of designer view without having to put the class in its own file.
Public Class RootViewDesignerComponent
Inherits RootDesignedComponent
Public Sub New()
End Sub
End Class
' The following attribute associates the RootDesignedComponent with the RootDesignedComponent component.
<Designer(GetType(SampleRootDesigner), GetType(IRootDesigner))> _
Public Class RootDesignedComponent
Inherits Component
Public Sub New()
End Sub
End Class
' Example IRootDesigner implementation demonstrates LocalizationExtenderProvider support.
Friend Class SampleRootDesigner
Implements IRootDesigner
' RootDesignerView Control provides a full region designer view for this root designer's associated component.
Private m_view As RootDesignerView
' Stores reference to the LocalizationExtenderProvider this designer adds, in order to remove it on Dispose.
Private extender As LocalizationExtenderProvider
' Internally stores the IDesigner's component reference
Private component_ As IComponent
' Adds a LocalizationExtenderProvider for the component this designer is initialized to support.
Public Sub Initialize(ByVal component As System.ComponentModel.IComponent) Implements IRootDesigner.Initialize
Me.component_ = component
' If no extender from this designer is active...
If extender Is Nothing Then
' Adds a LocalizationExtenderProvider that provides localization support properties to the specified component.
extender = New LocalizationExtenderProvider(Me.component_.Site, Me.component_)
End If
End Sub
' Provides a RootDesignerView object that supports ViewTechnology.WindowsForms.
Function GetView(ByVal technology As ViewTechnology) As Object Implements IRootDesigner.GetView
If technology <> ViewTechnology.WindowsForms Then
Throw New ArgumentException("Not a supported view technology", "technology")
End If
If m_view Is Nothing Then
' Create the view control. In this example, a Control of type RootDesignerView is used.
' A WindowsForms ViewTechnology view provider requires a class that inherits from Control.
m_view = New RootDesignerView(Me, Me.Component)
End If
Return m_view
End Function
' This designer supports the WindowsForms view technology.
ReadOnly Property SupportedTechnologies() As ViewTechnology() Implements IRootDesigner.SupportedTechnologies
Get
Return New ViewTechnology() {ViewTechnology.WindowsForms}
End Get
End Property
' If a LocalizationExtenderProvider has been added, removes the extender provider.
Protected Overloads Sub Dispose(ByVal disposing As Boolean)
' If an extender has been added, remove it
If (extender IsNot Nothing) Then
' Disposes of the extender provider. The extender
' provider removes itself from the extender provider
' service when it is disposed.
extender.Dispose()
extender = Nothing
End If
End Sub
' Empty IDesigner interface property and method implementations
Public ReadOnly Property Verbs() As System.ComponentModel.Design.DesignerVerbCollection Implements IDesigner.Verbs
Get
Return Nothing
End Get
End Property
Public ReadOnly Property Component() As System.ComponentModel.IComponent Implements IRootDesigner.Component
Get
Return Me.component_
End Get
End Property
Public Sub DoDefaultAction() Implements IDesigner.DoDefaultAction
End Sub
Public Overloads Sub Dispose() Implements IDisposable.Dispose
End Sub
' RootDesignerView is a simple control that will be displayed in the designer window.
Private Class RootDesignerView
Inherits Control
Private m_designer As SampleRootDesigner
Private comp As IComponent
Public Sub New(ByVal designer As SampleRootDesigner, ByVal component As IComponent)
m_designer = designer
Me.comp = component
BackColor = Color.Blue
Font = New Font(FontFamily.GenericMonospace, 12)
End Sub
' Displays the name of the component and the name of the assembly of the component
' that this root designer is providing support for.
Protected Overrides Sub OnPaint(ByVal pe As PaintEventArgs)
MyBase.OnPaint(pe)
If (m_designer IsNot Nothing) AndAlso (comp IsNot Nothing) Then
' Draws the name of the component in large letters.
pe.Graphics.DrawString("Root Designer View", Font, Brushes.Yellow, 8, 4)
pe.Graphics.DrawString("Design Name : " + comp.Site.Name, New Font("Arial", 10), Brushes.Yellow, 8, 28)
' Uses the site of the component to acquire an ISelectionService and sets the property grid focus to the component.
Dim selectionService As ISelectionService = CType(comp.Site.GetService(GetType(ISelectionService)), ISelectionService)
If (selectionService IsNot Nothing) Then
selectionService.SetSelectedComponents(New IComponent() {m_designer.Component})
End If
End If
End Sub
End Class
End Class
備註
視圖轉接器型號取代並新增了 ViewTechnology 此功能;但 ViewTechnology 此功能仍保留以供向下相容及未來使用,若您願意。
ViewTechnology 定義可指示用於控制設計師託管文件顯示模式的識別碼。
你應該只在設計師主機環境中使用這個 Default 值。 在先前版本的 .NET 框架中,ViewTechnology 枚舉指定了根設計器所支援的 UI 模型類型。 因為這個模型無法擴充,你應該改用 View Adapter 模型。 視圖適配器是一種將一種類型的物件適配到另一種類型的類型。
例如,HTML 設計器可能會回傳一棵 DemoDOM 樹作為其檢視。 HTML 設計器回傳 的 Default檢視技術。 Windows Forms 主機環境會提供一個或多個檢視介面卡類別。 如果其中一類能將 DemoDOM 轉換成 Windows Forms 控制項,主機應用程式就能支援此類設計器。 若無轉接器能處理設計 GetView 者方法回傳的資料型態,設計者載入將失敗,使用者將出現錯誤。
Visual Studio 有可擴充的介面卡方案,能適應任何 UI 技術。 第三方技術供應商也能提供適當的視圖轉接器,其物件模型可立即使用。