Control.FindForm Metodo

Definizione

Recupera il form in cui si trova il controllo.Retrieves the form that the control is on.

public:
 System::Windows::Forms::Form ^ FindForm();
public System.Windows.Forms.Form FindForm ();
member this.FindForm : unit -> System.Windows.Forms.Form
Public Function FindForm () As Form

Restituisce

Oggetto Form in cui si trova il controllo.The Form that the control is on.

Esempi

Nell'esempio di codice seguente viene trovato il form che contiene il pulsante specificato.The following code example finds the form that contains the specified button.

   // This example uses the Parent property and the Find method of Control to set
   // properties on the parent control of a Button and its Form. The example assumes
   // that a Button control named button1 is located within a GroupBox control. The 
   // example also assumes that the Click event of the Button control is connected to
   // the event handler method defined in the example.
private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      // Get the control the Button control is located in. In this case a GroupBox.
      Control^ control = button1->Parent;
      
      // Set the text and backcolor of the parent control.
      control->Text = "My Groupbox";
      control->BackColor = Color::Blue;
      
      // Get the form that the Button control is contained within.
      Form^ myForm = button1->FindForm();
      
      // Set the text and color of the form containing the Button.
      myForm->Text = "The Form of My Control";
      myForm->BackColor = Color::Red;
   }
// This example uses the Parent property and the Find method of Control to set
// properties on the parent control of a Button and its Form. The example assumes
// that a Button control named button1 is located within a GroupBox control. The 
// example also assumes that the Click event of the Button control is connected to
// the event handler method defined in the example.
private void button1_Click(object sender, System.EventArgs e)
{
   // Get the control the Button control is located in. In this case a GroupBox.
   Control control = button1.Parent;
   // Set the text and backcolor of the parent control.
   control.Text = "My Groupbox";
   control.BackColor = Color.Blue;
   // Get the form that the Button control is contained within.
   Form myForm = button1.FindForm();
   // Set the text and color of the form containing the Button.
   myForm.Text = "The Form of My Control";
   myForm.BackColor = Color.Red;
}
' This example uses the Parent property and the Find method of Control to set
' properties on the parent control of a Button and its Form. The example assumes
' that a Button control named button1 is located within a GroupBox control. The 
' example also assumes that the Click event of the Button control is connected to
' the event handler method defined in the example.
Private Sub button1_Click(sender As Object, e As System.EventArgs) Handles button1.Click
   ' Get the control the Button control is located in. In this case a GroupBox.
   Dim control As Control = button1.Parent
   ' Set the text and backcolor of the parent control.
   control.Text = "My Groupbox"
   control.BackColor = Color.Blue
   ' Get the form that the Button control is contained within.
   Dim myForm As Form = button1.FindForm()
   ' Set the text and color of the form containing the Button.
   myForm.Text = "The Form of My Control"
   myForm.BackColor = Color.Red
End Sub

Commenti

Il valore della proprietà Parent del controllo potrebbe non corrispondere al Form restituito dal metodo FindForm.The control's Parent property value might not be the same as the Form returned by FindForm method. Se, ad esempio, un controllo RadioButton è contenuto in un controllo GroupBox e il GroupBox si trova in un Form, il Parent del controllo RadioButton è il GroupBox e il Parent del controllo GroupBox è il Form.For example, if a RadioButton control is contained within a GroupBox control, and the GroupBox is on a Form, the RadioButton control's Parent is the GroupBox and the GroupBox control's Parent is the Form.

Sicurezza

UIPermission
per tutte le finestre per chiamare questo metodo.for all windows to call this method. Enumerazione associata: valore AllWindows di UIPermissionWindow.Associated enumeration: AllWindows value of UIPermissionWindow.

Si applica a

Vedi anche