ContainerControl.ParentForm 屬性

定義

取得被指派容器控制項的表單。

public:
 property System::Windows::Forms::Form ^ ParentForm { System::Windows::Forms::Form ^ get(); };
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.Form ParentForm { get; }
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.Form? ParentForm { get; }
[<System.ComponentModel.Browsable(false)>]
member this.ParentForm : System.Windows.Forms.Form
Public ReadOnly Property ParentForm As Form

屬性值

被指派容器控制項的 Form。 如果控制項裝載在 Internet Explorer 內,或是其他沒有父表單的裝載內容中,則這個屬性將傳回 null。

屬性

範例

下列程式碼範例示範如何建立兩種表單: Form1Form2 。 將 的 IsMdiContainerForm1 屬性設定為 true ,並將其 MdiParent 設為 的 Form2 。 接下來,在每個表單上建立按鈕 button1 。 按一下父表單上的按鈕時,事件處理常式會顯示子表單。 按一下子表單上的按鈕時,事件處理常式會顯示 Name 其父表單的 屬性。 使用下列兩個程式碼區段來覆寫 button1 這兩種形式的事件處理常式。

   // The event handler on Form1.
private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      // Create an instance of Form2.
      Form1^ f2 = gcnew Form2;

      // Make this form the parent of f2.
      f2->MdiParent = this;

      // Display the form.
      f2->Show();
   }
// The event handler on Form1.
private void button1_Click(object sender, System.EventArgs e)
{
    // Create an instance of Form2.
    Form2 f2 = new Form2();
    // Make this form the parent of f2.
    f2.MdiParent = this;
    // Display the form.
    f2.Show();
}
' The event handler on Form1.
Private Sub button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
    ' Create an instance of Form2.
    Dim f2 As New Form2()
    ' Make this form the parent of f2.
    f2.MdiParent = Me
    ' Display the form.
    f2.Show()
End Sub
   // The event handler on Form2.
private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      // Get the Name property of the Parent.
      String^ s = ParentForm->Name;

      // Display the name in a message box.
      MessageBox::Show( String::Concat( "My Parent is ", s, "." ) );
   }
// The event handler on Form2.
private void button1_Click(object sender, System.EventArgs e)
{
    // Get the Name property of the Parent.
    string s = ParentForm.Name;
    // Display the name in a message box.
    MessageBox.Show("My Parent is " + s + ".");
}
' The event handler on Form2.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    ' Get the Name property of the parent.
    Dim s As String = ParentForm.Name
    ' Display the name in a message box.
    MessageBox.Show("My parent is " + s + ".")
End Sub

適用於

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