CompositionContainer.Compose(CompositionBatch) 方法

public:
 void Compose(System::ComponentModel::Composition::Hosting::CompositionBatch ^ batch);

public void Compose(System.ComponentModel.Composition.Hosting.CompositionBatch batch);

member this.Compose : System.ComponentModel.Composition.Hosting.CompositionBatch -> unit

Public Sub Compose (batch As CompositionBatch)

參數

範例

在這個簡單的例子中，會建立三個部分並加入 CompositionContainer，並取回一個部分以顯示所有匯入都已完成。 此範例使用了屬性化程式設計模型（Attributed Programming Model）。

[Export]
class Part1
{
    public String data = "This is the example data!";
}

[Export]
class Part2
{
    [Import]
    public Part1 data { get; set; }
}

[Export]
class Part3
{
    [Import]
    public Part2 data { get; set; }
}

class Program
{
    static void Main(string[] args)
    {
        CompositionContainer container = new CompositionContainer();
        CompositionBatch batch = new CompositionBatch();
        batch.AddPart(AttributedModelServices.CreatePart(new Part1()));
        batch.AddPart(AttributedModelServices.CreatePart(new Part2()));
        batch.AddPart(AttributedModelServices.CreatePart(new Part3()));
        container.Compose(batch);
        Part3 _part = container.GetExportedValue<Part3>();
        Console.WriteLine(_part.data.data.data);
        Console.ReadLine();
    }
}

<Export()>
Public Class Part1
    Public ReadOnly Property data As String
        Get
            Return "This is the example data!"
        End Get
    End Property
End Class
<Export()>
Public Class Part2
    <Import()>
    Public Property data As Part1
End Class

<Export()>
Public Class Part3
    <Import()>
    Public Property data As Part2
End Class


Sub Main()
    Dim container As New CompositionContainer()
    Dim batch As New CompositionBatch()
    batch.AddPart(AttributedModelServices.CreatePart(New Part1()))
    batch.AddPart(AttributedModelServices.CreatePart(New Part2()))
    batch.AddPart(AttributedModelServices.CreatePart(New Part3()))
    container.Compose(batch)
    Dim _part As Part3
    _part = container.GetExportedValue(Of Part3)()
    Console.WriteLine(_part.data.data.data)
    Console.ReadLine()

End Sub

備註

此方法是直接從容器中添加或移除零件的主要方式。 它們 CompositionContainer 會一直保持穩定、鎮定的狀態。 因此，開始作曲時從不一定要用空呼CompositionBatch號Compose。 相反地，當你需要對可用CompositionContainer零件做修改時，就呼叫該Compose方法。

它可以 CompositionBatch 包含需要添加或移除的部分。 每次呼叫 時 Compose，重構只會進行一次。

另請參閱

• 屬性化程式模型概述