Form.AcceptButton Eigenschaft

Definition

Ruft die Schaltfläche im Formular ab, die beim Drücken der EINGABETASTE betätigt wird, oder legt diese fest.Gets or sets the button on the form that is clicked when the user presses the ENTER key.

public:
 property System::Windows::Forms::IButtonControl ^ AcceptButton { System::Windows::Forms::IButtonControl ^ get(); void set(System::Windows::Forms::IButtonControl ^ value); };
public System.Windows.Forms.IButtonControl AcceptButton { get; set; }
member this.AcceptButton : System.Windows.Forms.IButtonControl with get, set
Public Property AcceptButton As IButtonControl

Eigenschaftswert

Ein IButtonControl, das die Schaltfläche darstellt, die als Bestätigungsschaltfläche für das Formular verwendet werden soll.An IButtonControl that represents the button to use as the accept button for the form.

Beispiele

Im folgenden Beispiel wird eine neue Instanz einer Form erstellt und die ShowDialog-Methode aufgerufen, um das Formular als Dialogfeld anzuzeigen.The following example creates a new instance of a Form and calls the ShowDialog method to display the form as a dialog box. Im Beispiel werden die Eigenschaften "FormBorderStyle", "AcceptButton", "CancelButton", "MinimizeBox", "MaximizeBox" und "StartPosition" festgelegt, um die Darstellung und Funktionalität des Formulars in ein Dialogfeld zu ändernThe example sets the FormBorderStyle, AcceptButton, CancelButton, MinimizeBox, MaximizeBox, and StartPosition properties to change the appearance and functionality of the form to a dialog box. Im Beispiel wird auch die Add-Methode der Controls-Auflistung des Formulars verwendet, um zwei Button-Steuerelemente hinzuzufügen.The example also uses the Add method of the form's Controls collection to add two Button controls. Im Beispiel wird die HelpButton-Eigenschaft verwendet, um in der Titelleiste des Dialog Felds eine Hilfe Schaltfläche anzuzeigen.The example uses the HelpButton property to display a help button in the caption bar of the dialog box.

public:
   void CreateMyForm()
   {
      // Create a new instance of the form.
      Form^ form1 = gcnew Form;
      // Create two buttons to use as the accept and cancel buttons.
      Button^ button1 = gcnew Button;
      Button^ button2 = gcnew Button;
      
      // Set the text of button1 to "OK".
      button1->Text = "OK";
      // Set the position of the button on the form.
      button1->Location = Point(10,10);
      // Set the text of button2 to "Cancel".
      button2->Text = "Cancel";
      // Set the position of the button based on the location of button1.
      button2->Location =
         Point( button1->Left, button1->Height + button1->Top + 10 );
      // Set the caption bar text of the form.   
      form1->Text = "My Dialog Box";
      // Display a help button on the form.
      form1->HelpButton = true;
      
      // Define the border style of the form to a dialog box.
      form1->FormBorderStyle = ::FormBorderStyle::FixedDialog;
      // Set the MaximizeBox to false to remove the maximize box.
      form1->MaximizeBox = false;      
      // Set the MinimizeBox to false to remove the minimize box.
      form1->MinimizeBox = false;
      // Set the accept button of the form to button1.
      form1->AcceptButton = button1;
      // Set the cancel button of the form to button2.
      form1->CancelButton = button2;
      // Set the start position of the form to the center of the screen.
      form1->StartPosition = FormStartPosition::CenterScreen;
      
      // Add button1 to the form.
      form1->Controls->Add( button1 );
      // Add button2 to the form.
      form1->Controls->Add( button2 );
      // Display the form as a modal dialog box.
      form1->ShowDialog();
   }
public void CreateMyForm()
{
   // Create a new instance of the form.
   Form form1 = new Form();
   // Create two buttons to use as the accept and cancel buttons.
   Button button1 = new Button ();
   Button button2 = new Button ();
  
   // Set the text of button1 to "OK".
   button1.Text = "OK";
   // Set the position of the button on the form.
   button1.Location = new Point (10, 10);
   // Set the text of button2 to "Cancel".
   button2.Text = "Cancel";
   // Set the position of the button based on the location of button1.
   button2.Location
      = new Point (button1.Left, button1.Height + button1.Top + 10);
   // Set the caption bar text of the form.   
   form1.Text = "My Dialog Box";
   // Display a help button on the form.
   form1.HelpButton = true;

   // Define the border style of the form to a dialog box.
   form1.FormBorderStyle = FormBorderStyle.FixedDialog;
   // Set the MaximizeBox to false to remove the maximize box.
   form1.MaximizeBox = false;
   // Set the MinimizeBox to false to remove the minimize box.
   form1.MinimizeBox = false;
   // Set the accept button of the form to button1.
   form1.AcceptButton = button1;
   // Set the cancel button of the form to button2.
   form1.CancelButton = button2;
   // Set the start position of the form to the center of the screen.
   form1.StartPosition = FormStartPosition.CenterScreen;
   
   // Add button1 to the form.
   form1.Controls.Add(button1);
   // Add button2 to the form.
   form1.Controls.Add(button2);
   
   // Display the form as a modal dialog box.
   form1.ShowDialog();
}
Public Sub CreateMyForm()
    ' Create a new instance of the form.
    Dim form1 As New Form()
    ' Create two buttons to use as the accept and cancel buttons.
    Dim button1 As New Button()
    Dim button2 As New Button()
       
    ' Set the text of button1 to "OK".
    button1.Text = "OK"
    ' Set the position of the button on the form.
    button1.Location = New Point(10, 10)
    ' Set the text of button2 to "Cancel".
    button2.Text = "Cancel"
    ' Set the position of the button based on the location of button1.
    button2.Location = _
       New Point(button1.Left, button1.Height + button1.Top + 10)
    ' Set the caption bar text of the form.   
    form1.Text = "My Dialog Box"
    ' Display a help button on the form.
    form1.HelpButton = True
       
    ' Define the border style of the form to a dialog box.
    form1.FormBorderStyle = FormBorderStyle.FixedDialog
    ' Set the MaximizeBox to false to remove the maximize box.
    form1.MaximizeBox = False
    ' Set the MinimizeBox to false to remove the minimize box.
    form1.MinimizeBox = False
    ' Set the accept button of the form to button1.
    form1.AcceptButton = button1
    ' Set the cancel button of the form to button2.
    form1.CancelButton = button2
    ' Set the start position of the form to the center of the screen.
    form1.StartPosition = FormStartPosition.CenterScreen
       
    ' Add button1 to the form.
    form1.Controls.Add(button1)
    ' Add button2 to the form.
    form1.Controls.Add(button2)
       
    ' Display the form as a modal dialog box.
    form1.ShowDialog()
End Sub

Hinweise

Mit dieser Eigenschaft können Sie eine Standardaktion festlegen, die auftritt, wenn der Benutzer die EINGABETASTE in der Anwendung drückt.This property enables you to designate a default action to occur when the user presses the ENTER key in your application. Die dieser Eigenschaft zugewiesene Schaltfläche muss eine IButtonControl sein, die sich auf dem aktuellen Formular oder in einem Container auf dem aktuellen Formular befindet.The button assigned to this property must be an IButtonControl that is on the current form or located within a container on the current form.

Sie können diese Eigenschaft verwenden, um dem Benutzer zu ermöglichen, schnell in einem einfachen Formular zu navigieren, indem Sie einfach die EINGABETASTE drücken, wenn Sie fertig sind, anstatt manuell auf die Schaltfläche "annehmen" mit der Maus zu klicken.You can use this property to allow the user to quickly navigate a simple form by allowing them to simply press the ENTER key when they are finished instead of manually clicking the accept button with their mouse.

Die Schaltfläche "annehmen" wird möglicherweise nicht aktiviert, wenn das derzeit ausgewählte Steuerelement im Formular die EINGABETASTE abfängt und verarbeitet.The accept button might not be activated if the currently selected control on the form intercepts the ENTER key and processes it. Beispielsweise ermöglicht ein mehr zeitiges Textfeld-Steuerelement, dass die EINGABETASTE gedrückt wird, wenn Sie ausgewählt wird, um ein neues Zeilenzeichen in das Steuerelement einzufügen.For example, a multiline text box control allows the ENTER key to be pressed when it is selected to insert a new line character in the control.

Gilt für:

Siehe auch