TemplateControl.Construct TemplateControl.Construct TemplateControl.Construct TemplateControl.Construct Method

定義

執行設計階段邏輯。Performs design-time logic.

protected:
 virtual void Construct();
protected virtual void Construct ();
abstract member Construct : unit -> unit
override this.Construct : unit -> unit
Protected Overridable Sub Construct ()

範例

下列程式碼範例示範如何覆寫Construct自訂控制項的方法 (衍生TemplateControl自類別)。The following code example demonstrates how to override the Construct method of a custom control that is derived from the TemplateControl class.

如需MyControl類別的完整定義, 請參閱TemplateControlFor the full definition of the MyControl class, see TemplateControl.

// Create an event for this user control
public event System.EventHandler myControl;

// Override the default constructor.
protected override void Construct()
{
    // Specify the handler for the OnInit method.
    this.myControl += new EventHandler(MyInit);
}

protected override void OnInit(EventArgs e)
{
    myControl(this, e);
    Response.Write("The OnInit() method is used to raise the Init event.");
}

// Use the MyInit handler to set the Message property
void MyInit(object sender, System.EventArgs e)
{
    Message = "Hello World!";
}
 ' Create an event for this user control
 Public Event myControl As System.EventHandler

 ' Override the default constructor.
 Protected Overrides Sub Construct()
     ' Specify the handler for the OnInit method.
     AddHandler Me.myControl, AddressOf MyInit
 End Sub

 Protected Overrides Sub OnInit(ByVal e As EventArgs)
     RaiseEvent myControl(Me, e)
     Response.Write("The OnInit() method is used to raise the Init event.")
 End Sub


 ' Use the MyInit handler to set the Message property
 Sub MyInit(ByVal sender As Object, ByVal e As System.EventArgs)
     Message = "Hello World!"
 End Sub

備註

方法可讓您設計階段執行PageUserControl控制項的程式碼。 ConstructThe Construct method allows design-time code execution of the Page and UserControl controls.

適用於

另請參閱