ContainerControl.ParentForm Proprietà

Definizione

Ottiene il form cui è assegnato il controllo contenitore.Gets the form that the container control is assigned to.

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

Valore della proprietà

L'oggetto Form cui è assegnato il controllo contenitore.The Form that the container control is assigned to. Questa proprietà restituirà Null se il controllo è contenuto all'interno di Internet Explorer o in un altro contesto contenitore in cui non ci sono form padre.This property will return null if the control is hosted inside of Internet Explorer or in another hosting context where there is no parent form.

Attributi

Esempio

Nell'esempio di codice seguente viene illustrato come creare due moduli: Form1 e Form2.The following code example shows how to create two forms: Form1 and Form2. Impostare la proprietà IsMdiContainer di Form1 su true e impostarla come MdiParent di Form2.Set the IsMdiContainer property of Form1 to true and make it the MdiParent of Form2. Successivamente, creare un pulsante button1, in ogni form.Next, create a button, button1, on each form. Quando si fa clic sul pulsante nel form padre, il gestore eventi Visualizza il form figlio.When the button on the parent form is clicked, the event handler displays the child form. Quando si fa clic sul pulsante sul form figlio, il gestore eventi Visualizza la proprietà Name del form padre.When the button on the child form is clicked, the event handler displays the Name property of its parent form. Usare i due segmenti di codice seguenti per sovrascrivere button1 gestori eventi in entrambi i form.Use the following two code segments to overwrite button1 event handlers in both forms.

   // 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

Si applica a

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