Form.FormBorderStyle Свойство

Определение

Возвращает или задает стиль границы формы.Gets or sets the border style of the form.

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

Значение свойства

Объект FormBorderStyle, представляющий стиль отображаемой границы для формы.A FormBorderStyle that represents the style of border to display for the form. Значение по умолчанию — FormBorderStyle.Sizable.The default is FormBorderStyle.Sizable.

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 задаются свойства FormBorderStyle, AcceptButton, CancelButton, MinimizeBox, MaximizeBox и StartPosition, чтобы изменить внешний вид и функциональные возможности формы на диалоговое окно.The example sets the FormBorderStyle, AcceptButton, CancelButton, MinimizeBox, MaximizeBox, 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 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

Комментарии

Стиль границы формы определяет, как выглядит внешний край формы.The border style of the form determines how the outer edge of the form appears. В дополнение к изменению границ для формы, определенные стили границ запрещают размер формы.In addition to changing the border display for a form, certain border styles prevent the form from being sized. Например, стиль границы FormBorderStyle.FixedDialog изменяет границу формы на значение диалогового окна и предотвращает изменение размера формы.For example, the FormBorderStyle.FixedDialog border style changes the border of the form to that of a dialog box and prevents the form from being resized. Стиль границы также может влиять на размер или доступность раздела заголовка в форме.The border style can also affect the size or availability of the caption bar section of a form.

Примечание

В стиле Sizable невозможно изменить размер окна ниже определенного минимального значения, даже если для параметра ControlBox задано значение false и для Text назначена строка нулевой длины.With the Sizable style, it is impossible to resize the window below a certain minimum value, even if you have set ControlBox to false and assigned a zero-length string to Text. Обойти это можно, используя вместо этого стиль SizableToolWindow.Consider working around this by using the SizableToolWindow style instead.

Применяется к

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