Form.StartPosition Form.StartPosition Form.StartPosition Form.StartPosition Property

Definition

Ruft die Anfangsposition des Formulars zur Laufzeit ab oder legt diese fest.Gets or sets the starting position of the form at run time.

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

Eigenschaftswert

Eine FormStartPosition, die die Anfangsposition des Formulars darstellt.A FormStartPosition that represents the starting position of the form.

Ausnahmen

Der angegebene Wert liegt außerhalb des gültigen Wertebereichs.The value specified is outside the range of valid values.

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" und "StartPosition" festgelegt, um die Darstellung und die Funktionalität des Formulars in ein Dialogfeld zu ändern.The example sets the FormBorderStyle, AcceptButton, CancelButton, 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 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 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 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 die Anfangsposition des Formulars festlegen, wenn es zur Laufzeit angezeigt wird.This property enables you to set the starting position of the form when it is displayed at run time. Die Position des Formulars kann manuell angegeben werden, indem die Location-Eigenschaft festgelegt wird oder der von Windows angegebene Standard Speicherort verwendet wird.The form's position can be specified manually by setting the Location property or use the default location specified by Windows. Sie können das Formular auch so positionieren, dass es in der Mitte des Bildschirms oder in der Mitte des übergeordneten Formulars für Formulare wie untergeordnete MDI-Formulare (Multiple Document Interface) angezeigt wird.You can also position the form to display in the center of the screen or in the center of its parent form for forms such as multiple-document interface (MDI) child forms.

Diese Eigenschaft sollte festgelegt werden, bevor das Formular angezeigt wird.This property should be set before the form is shown. Sie können diese Eigenschaft festlegen, bevor Sie die Show-oder ShowDialog-Methode oder den Konstruktor des Formulars aufzurufen.You can set this property before you call the Show or ShowDialog method or in your form's constructor.

Gilt für:

Siehe auch