共用方式為


Control.Contains(Control) 方法

定義

擷取指示控制項是否為控制項的子控制項的值。

public:
 bool Contains(System::Windows::Forms::Control ^ ctl);
public bool Contains (System.Windows.Forms.Control ctl);
public bool Contains (System.Windows.Forms.Control? ctl);
member this.Contains : System.Windows.Forms.Control -> bool
Public Function Contains (ctl As Control) As Boolean

參數

ctl
Control

要評估的 Control

傳回

如果指定的控制項是控制項的子控制項,則為 true,否則為 false

範例

下列程式碼範例會呼叫 其 BringToFront 方法,以確保 Label 可見。 此範例需要您具有 FormPanel 具名 panel1 的 ,以及 Label 名為 label1 的 。

private:
   void MakeLabelVisible()
   {
      
      /* If the panel contains label1, bring it
         * to the front to make sure it is visible. */
      if ( panel1->Contains( label1 ) )
      {
         label1->BringToFront();
      }
   }
private void MakeLabelVisible()
{
   /* If the panel contains label1, bring it 
   * to the front to make sure it is visible. */
   if(panel1.Contains(label1))
   {
      label1.BringToFront();
   }
}
Private Sub MakeLabelVisible()
   ' If the panel contains label1, bring it 
   ' to the front to make sure it is visible. 
   If panel1.Contains(label1) Then
      label1.BringToFront()
   End If
End Sub

適用於

另請參閱