ISite 介面
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。
提供站台所需的功能。
public interface class ISite : IServiceProviderpublic interface ISite : IServiceProvider[System.Runtime.InteropServices.ComVisible(true)]
public interface ISite : IServiceProvidertype ISite = interface
interface IServiceProvider[<System.Runtime.InteropServices.ComVisible(true)>]
type ISite = interface
interface IServiceProviderPublic Interface ISite
Implements IServiceProvider- 衍生
- 屬性
- 實作
範例
下列範例示範 、 和 IContainer 的ISiteIComponent實作，以用於連結庫容器。
/// <summary>
/// The following example demonstrates the implementation of
/// ISite, IComponent, and IContainer for use in a simple library container.
///
/// This example uses the System, System.ComponentModel, and System.Collections
/// namespaces.
/// </summary>
//This code segment implements the ISite and IComponent interfaces.
//The implementation of the IContainer interface can be seen in the documentation
//of IContainer.
//Implement the ISite interface.
// The ISBNSite class represents the ISBN name of the book component
class ISBNSite : ISite
{
private IComponent m_curComponent;
private IContainer m_curContainer;
private bool m_bDesignMode;
private string m_ISBNCmpName;
public ISBNSite(IContainer actvCntr, IComponent prntCmpnt)
{
m_curComponent = prntCmpnt;
m_curContainer = actvCntr;
m_bDesignMode = false;
m_ISBNCmpName = null;
}
//Support the ISite interface.
public virtual IComponent Component
{
get
{
return m_curComponent;
}
}
public virtual IContainer Container
{
get
{
return m_curContainer;
}
}
public virtual bool DesignMode
{
get
{
return m_bDesignMode;
}
}
public virtual string Name
{
get
{
return m_ISBNCmpName;
}
set
{
m_ISBNCmpName = value;
}
}
//Support the IServiceProvider interface.
public virtual object GetService(Type serviceType)
{
//This example does not use any service object.
return null;
}
}
// The BookComponent class represents the book component of the library container.
// This class implements the IComponent interface.
class BookComponent : IComponent
{
public event EventHandler Disposed;
private ISite m_curISBNSite;
private string m_bookTitle;
private string m_bookAuthor;
public BookComponent(string Title, string Author)
{
m_curISBNSite = null;
Disposed = null;
m_bookTitle = Title;
m_bookAuthor = Author;
}
public string Title
{
get
{
return m_bookTitle;
}
}
public string Author
{
get
{
return m_bookAuthor;
}
}
public virtual void Dispose()
{
//There is nothing to clean.
if(Disposed != null)
Disposed(this,EventArgs.Empty);
}
public virtual ISite Site
{
get
{
return m_curISBNSite;
}
set
{
m_curISBNSite = value;
}
}
public override bool Equals(object cmp)
{
BookComponent cmpObj = (BookComponent)cmp;
if(this.Title.Equals(cmpObj.Title) && this.Author.Equals(cmpObj.Author))
return true;
return false;
}
public override int GetHashCode()
{
return base.GetHashCode();
}
}
'The following example demonstrates the implementation of
'ISite, IComponent, and IContainer for use in a simple library container.
'
'This example imports the System, System.ComponentModel, and System.Collections
'namespaces.
'This code segment implements the ISite and IComponent interfaces.
'The implementation of the IContainer interface can be seen in the documentation
'of IContainer.
'Implement the ISite interface.
'The ISBNSite class represents the ISBN name of the book component
Class ISBNSite
Implements ISite
Private m_curComponent As IComponent
Private m_curContainer As IContainer
Private m_bDesignMode As Boolean
Private m_ISBNCmpName As String
Public Sub New(ByVal actvCntr As IContainer, ByVal prntCmpnt As IComponent)
m_curComponent = prntCmpnt
m_curContainer = actvCntr
m_bDesignMode = False
m_ISBNCmpName = Nothing
End Sub
'Support the ISite interface.
Public ReadOnly Property Component() As IComponent Implements ISite.Component
Get
Return m_curComponent
End Get
End Property
Public ReadOnly Property Container() As IContainer Implements ISite.Container
Get
Return m_curContainer
End Get
End Property
Public ReadOnly Property DesignMode() As Boolean Implements ISite.DesignMode
Get
Return m_bDesignMode
End Get
End Property
Public Property Name() As String Implements ISite.Name
Get
Return m_ISBNCmpName
End Get
Set(ByVal Value As String)
m_ISBNCmpName = Value
End Set
End Property
'Support the IServiceProvider interface.
Public Function GetService(ByVal serviceType As Type) As Object Implements IServiceProvider.GetService
'This example does not use any service object.
GetService = Nothing
End Function
End Class
'The BookComponent class represents the book component of the library container.
Class BookComponent
Implements IComponent
Public Event Disposed As EventHandler Implements IComponent.Disposed
Private m_curISBNSite As ISite
Private m_bookTitle As String
Private m_bookAuthor As String
Public Sub New(ByVal Title As String, ByVal Author As String)
m_curISBNSite = Nothing
m_bookTitle = Title
m_bookAuthor = Author
End Sub
Public ReadOnly Property Title() As String
Get
Return m_bookTitle
End Get
End Property
Public ReadOnly Property Author() As String
Get
Return m_bookAuthor
End Get
End Property
Public Sub Dispose() Implements IDisposable.Dispose
'There is nothing to clean.
RaiseEvent Disposed(Me, EventArgs.Empty)
End Sub
Public Property Site() As ISite Implements IComponent.Site
Get
Return m_curISBNSite
End Get
Set(ByVal Value As ISite)
m_curISBNSite = Value
End Set
End Property
Public Overloads Function Equals(ByVal cmp As Object) As Boolean
Dim cmpObj As BookComponent = CType(cmp, BookComponent)
If (Me.Title.Equals(cmpObj.Title) And Me.Author.Equals(cmpObj.Author)) Then
Equals = True
Else
Equals = False
End If
End Function
Public Overrides Function GetHashCode() As Integer
GetHashCode = MyBase.GetHashCode()
End Function
End Class
備註
月臺會系結 Component 至 Container ，並啟用它們之間的通訊，並提供容器管理其元件的方式。
月臺也可以作為容器特定、每個元件資訊的存放庫，例如元件名稱。
給實施者的注意事項
若要成為月臺，類別必須實作 ISite 介面。
屬性
| Component |
當由類別實作時，取得與 ISite 相關聯的元件。 |
| Container |
當由類別實作時，取得與 IContainer 相關聯的 ISite。 |
| DesignMode |
判斷由類別實作時，元件是否處於設計模式。 |
| Name |
當由類別實作時，取得或設定與 ISite 相關聯的元件名稱。 |
方法
| GetService(Type) |
取得指定類型的服務物件。 (繼承來源 IServiceProvider) |
