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

Das folgende Codebeispiel erstellt eine neue Instanz von einem Form und ruft die ShowDialog Methode, um das Formular als Dialogfeld anzeigen.The following code example creates a new instance of a Form and calls the ShowDialog method to display the form as a dialog box. Im Beispiel wird die FormBorderStyle, AcceptButton, CancelButton, und StartPosition Eigenschaften, um die Darstellung und 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 verwendet auch die Add -Methode der des Formulars Controls Auflistung hinzuzufügende zwei Button Steuerelemente.The example also uses the Add method of the form's Controls collection to add two Button controls. Im Beispiel wird die HelpButton Eigenschaft, um eine Schaltfläche "Hilfe" auf der Titelleiste des Dialogfelds 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 'CreateMyForm

Hinweise

Diese Eigenschaft ermöglicht es Ihnen, die die Anfangsposition des Formulars festgelegt, wenn diese 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, durch Festlegen der Location Eigenschaft oder verwenden Sie am Standardspeicherort von Windows angegeben.The form's position can be specified manually by setting the Location property or use the default location specified by Windows. Sie können auch das Formular zum Anzeigen in der Mitte des Bildschirms oder in der Mitte des übergeordneten Formulars beispielsweise Multiple Document Interface (MDI) untergeordneten Formulare positionieren.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 muss festgelegt werden, bevor das Formular angezeigt wird.This property should be set before the form is shown. Sie können diese Eigenschaft festlegen, vor dem Aufruf der Show oder ShowDialog Methode oder im Konstruktor des Formulars.You can set this property before you call the Show or ShowDialog method or in your form's constructor.

Gilt für:

Siehe auch