Form.StartPosition Свойство

Определение

Возвращает или задает начальное положение формы в режиме выполнения.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

Значение свойства

Объект FormStartPosition, представляющий начальное положение формы.A FormStartPosition that represents the starting position of the form.

Исключения

Заданное значение находится вне диапазона допустимых значений.The value specified is outside the range of valid values.

Примеры

В следующем примере создается новый экземпляр Form и вызывается метод ShowDialog для вывода формы в виде диалогового окна.The following example creates a new instance of a Form and calls the ShowDialog method to display the form as a dialog box. В примере устанавливаются свойства FormBorderStyle, AcceptButton, CancelButton и StartPosition, чтобы изменить внешний вид и функциональные возможности формы на диалоговое окно.The example sets the FormBorderStyle, AcceptButton, CancelButton, and StartPosition properties to change the appearance and functionality of the form to a dialog box. В примере также используется метод Add коллекции Controls, чтобы добавить два элемента управления Button.The example also uses the Add method of the form's Controls collection to add two Button controls. В примере свойство HelpButton используется для вывода кнопки справки в строке заголовка диалогового окна.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

Комментарии

Это свойство позволяет задать начальное расположение формы при ее отображении во время выполнения.This property enables you to set the starting position of the form when it is displayed at run time. Положение формы можно указать вручную, задав свойство Location, или использовать расположение по умолчанию, заданное в Windows.The form's position can be specified manually by setting the Location property or use the default location specified by Windows. Можно также разместить форму, чтобы она отображалась в центре экрана или в центре ее родительской формы для таких форм, как дочерние формы многодокументного интерфейса (MDI).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.

Это свойство должно быть задано до отображения формы.This property should be set before the form is shown. Это свойство можно задать до вызова метода Show или ShowDialog или в конструкторе формы.You can set this property before you call the Show or ShowDialog method or in your form's constructor.

Применяется к

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