ToolboxItem.CreateComponentsCore 方法

定義

命名空間:

System.Drawing.Design

組件:

System.Windows.Forms.Design.dll

建立元件或叫用工具箱項目時要使用之元件的陣列。

多載

CreateComponentsCore(IDesignerHost)	建立元件或叫用工具箱項目時要使用之元件的陣列。
CreateComponentsCore(IDesignerHost, IDictionary)	在叫用工具箱項目時建立元件陣列。

CreateComponentsCore(IDesignerHost)

建立元件或叫用工具箱項目時要使用之元件的陣列。

protected:
 virtual cli::array <System::ComponentModel::IComponent ^> ^ CreateComponentsCore(System::ComponentModel::Design::IDesignerHost ^ host);

protected virtual System.ComponentModel.IComponent[] CreateComponentsCore (System.ComponentModel.Design.IDesignerHost host);

abstract member CreateComponentsCore : System.ComponentModel.Design.IDesignerHost -> System.ComponentModel.IComponent[]
override this.CreateComponentsCore : System.ComponentModel.Design.IDesignerHost -> System.ComponentModel.IComponent[]

Protected Overridable Function CreateComponentsCore (host As IDesignerHost) As IComponent()

參數

host

IDesignerHost

用來裝載工具箱項目的 IDesignerHost。

傳回

IComponent[]

建立的 IComponent 物件的陣列。

備註

如果 host 不是 null，方法 CreateComponentsCore 會將新的元件新增至設計工具。

給繼承者的注意事項

您可以覆寫 CreateComponentsCore(IDesignerHost) 方法，以傳回工具箱專案所建立的元件或元件。

另請參閱

• IDesignerHost

CreateComponentsCore(IDesignerHost, IDictionary)

在叫用工具箱項目時建立元件陣列。

protected:
 virtual cli::array <System::ComponentModel::IComponent ^> ^ CreateComponentsCore(System::ComponentModel::Design::IDesignerHost ^ host, System::Collections::IDictionary ^ defaultValues);

protected virtual System.ComponentModel.IComponent[] CreateComponentsCore (System.ComponentModel.Design.IDesignerHost host, System.Collections.IDictionary defaultValues);

abstract member CreateComponentsCore : System.ComponentModel.Design.IDesignerHost * System.Collections.IDictionary -> System.ComponentModel.IComponent[]
override this.CreateComponentsCore : System.ComponentModel.Design.IDesignerHost * System.Collections.IDictionary -> System.ComponentModel.IComponent[]

Protected Overridable Function CreateComponentsCore (host As IDesignerHost, defaultValues As IDictionary) As IComponent()

參數

host

IDesignerHost

建立元件時要使用的設計工具主應用程式。

defaultValues

IDictionary

預設值的屬性名稱/值組字典，用於初始化元件。

傳回

IComponent[]

建立的 IComponent 物件的陣列。

範例

下列程式代碼範例示範 CreateComponentsCore 在衍生 ToolboxItem 自 的類別中使用 方法，以進行自定義工具箱項目實作。 此程式代碼範例是針對 類別提供的較大範例的 ToolboxItem 一部分。

protected override IComponent[] CreateComponentsCore(
    System.ComponentModel.Design.IDesignerHost host, 
    System.Collections.IDictionary defaultValues)
{
    // Get the string we want to fill in the custom
    // user control.  If the user cancels out of the dialog,
    // return null or an empty array to signify that the 
    // tool creation was canceled.
    using (ToolboxItemDialog d = new ToolboxItemDialog())
    {
        if (d.ShowDialog() == DialogResult.OK)
        {
            string text = d.CreationText;

            IComponent[] comps =
                base.CreateComponentsCore(host, defaultValues);
            // comps will have a single component: our data type.
            ((UserControl1)comps[0]).LabelText = text;
            return comps;
        }
        else
        {
            return null;
        }
    }
}

Protected Overrides Function CreateComponentsCore( _
    ByVal host As System.ComponentModel.Design.IDesignerHost, _
    ByVal defaultValues As System.Collections.IDictionary) _
    As IComponent()
    ' Get the string we want to fill in the custom
    ' user control.  If the user cancels out of the dialog,
    ' return null or an empty array to signify that the 
    ' tool creation was canceled.
    Using d As New ToolboxItemDialog()
        If d.ShowDialog() = DialogResult.OK Then
            Dim [text] As String = d.CreationText
            Dim comps As IComponent() = _
                MyBase.CreateComponentsCore(host, defaultValues)
            ' comps will have a single component: our data type.
            CType(comps(0), UserControl1).LabelText = [text]
            Return comps
        Else
            Return Nothing
        End If
    End Using
End Function

備註

如果 host 不是 null，方法 CreateComponentsCore 會將新的元件新增至設計工具。