Control.Show 方法

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

對使用者顯示控制項。

public:
 void Show();

public void Show ();

member this.Show : unit -> unit

Public Sub Show ()

範例

下列程式碼範例會顯示關於對話方塊的 ，並暫時在其介面上繪製藍色方塊。 此範例要求您已定義衍生自 Form 具名 AboutDialog 的類別。

private:
   void menuItemHelpAbout_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      // Create and display a modeless about dialog box.
      AboutDialog^ about = gcnew AboutDialog;
      about->Show();
      
      // Draw a blue square on the form.
      /* NOTE: This is not a persistent object, it will no longer be
                  * visible after the next call to OnPaint. To make it persistent,
                  * override the OnPaint method and draw the square there */
      Graphics^ g = about->CreateGraphics();
      g->FillRectangle( Brushes::Blue, 10, 10, 50, 50 );
   }

private void menuItemHelpAbout_Click(object sender, EventArgs e)
{
   // Create and display a modless about dialog box.
   AboutDialog about = new AboutDialog();
   about.Show();

   // Draw a blue square on the form.
   /* NOTE: This is not a persistent object, it will no longer be
      * visible after the next call to OnPaint. To make it persistent, 
      * override the OnPaint method and draw the square there */
   Graphics g = about.CreateGraphics();
   g.FillRectangle(Brushes.Blue, 10, 10, 50, 50);
}

Private Sub menuItemHelpAbout_Click(sender As Object, _
  e As EventArgs) Handles menuItemHelpAbout.Click
   ' Create and display a modless about dialog box.
   Dim about As New AboutDialog()
   about.Show()
   
   ' Draw a blue square on the form.
   ' NOTE: This is not a persistent object, it will no longer be
   ' visible after the next call to OnPaint. To make it persistent, 
   ' override the OnPaint method and draw the square there 
   Dim g As Graphics = about.CreateGraphics()
   g.FillRectangle(Brushes.Blue, 10, 10, 50, 50)
End Sub

備註

顯示控制項相當於將 Visible 屬性設定為 true 。 Show呼叫 方法之後， Visible 屬性會傳回 的值 true ，直到 Hide 呼叫 方法為止。

另請參閱

• Visible
• Hide()