Form.DialogResult Свойство

Определение

Возвращает или задает результат диалога для формы.Gets or sets the dialog result for the form.

public:
 property System::Windows::Forms::DialogResult DialogResult { System::Windows::Forms::DialogResult get(); void set(System::Windows::Forms::DialogResult value); };
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.DialogResult DialogResult { get; set; }
member this.DialogResult : System.Windows.Forms.DialogResult with get, set
Public Property DialogResult As DialogResult

Значение свойства

Объект DialogResult, представляющий результат формы при использовании в качестве диалогового окна.A DialogResult that represents the result of the form when used as a dialog box.

Атрибуты

Исключения

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

Примеры

В следующем примере форма отображается как диалоговое окно, и отображается окно сообщения, указывающее, была ли нажата кнопка ОК или Отмена в форме с помощью ссылки на свойство формы DialogResult.The following example displays a form as a dialog box and displays a message box indicating whether the OK or Cancel button of the form was clicked by referencing the DialogResult property of the form.

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);
   
   // Make button1's dialog result OK.
   button1->DialogResult = ::DialogResult::OK;
   
   // Make button2's dialog result Cancel.
   button2->DialogResult = ::DialogResult::Cancel;
   
   // Set the caption bar text of the form.   
   form1->Text = "My Dialog Box";
   
   // 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();
   
   // Determine if the OK button was clicked on the dialog box.
   if ( form1->DialogResult == ::DialogResult::OK )
   {
      
      // Display a message box indicating that the OK button was clicked.
      MessageBox::Show( "The OK button on the form was clicked." );
      
      // Optional: Call the Dispose method when you are finished with the dialog box.
      delete form1;
   }
   else
   {
      
      // Display a message box indicating that the Cancel button was clicked.
      MessageBox::Show( "The Cancel button on the form was clicked." );
      
      // Optional: Call the Dispose method when you are finished with the dialog box.
      delete form1;
   }
}

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);
    // Make button1's dialog result OK.
    button1.DialogResult = DialogResult.OK;
    // Make button2's dialog result Cancel.
    button2.DialogResult = DialogResult.Cancel;
    // Set the caption bar text of the form.   
    form1.Text = "My Dialog Box";
 
    // 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();
 
    // Determine if the OK button was clicked on the dialog box.
    if (form1.DialogResult == DialogResult.OK)
    {
       // Display a message box indicating that the OK button was clicked.
       MessageBox.Show("The OK button on the form was clicked.");
       // Optional: Call the Dispose method when you are finished with the dialog box.
       form1.Dispose();
    }
    else
    {
       // Display a message box indicating that the Cancel button was clicked.
       MessageBox.Show("The Cancel button on the form was clicked.");
       // Optional: Call the Dispose method when you are finished with the dialog box.
       form1.Dispose();
    }
 }
    
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)
    ' Make button1's dialog result OK.
    button1.DialogResult = DialogResult.OK
    ' Make button2's dialog result Cancel.
    button2.DialogResult = DialogResult.Cancel
    ' Set the caption bar text of the form.   
    form1.Text = "My Dialog Box"
    
    ' 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()
    
    ' Determine if the OK button was clicked on the dialog box.
    If form1.DialogResult = DialogResult.OK Then
        ' Display a message box indicating that the OK button was clicked.
        MessageBox.Show("The OK button on the form was clicked.")
        ' Optional: Call the Dispose method when you are finished with the dialog box.
        form1.Dispose
    ' Display a message box indicating that the Cancel button was clicked.
    Else
        MessageBox.Show("The Cancel button on the form was clicked.")
        ' Optional: Call the Dispose method when you are finished with the dialog box.
        form1.Dispose
    End If
End Sub

Комментарии

Результат в диалоговом окне формы — это значение, возвращаемое формой при его отображении в виде модального диалогового окна.The dialog result of a form is the value that is returned from the form when it is displayed as a modal dialog box. Если форма отображается как диалоговое окно, установка этого свойства со значением из перечисления DialogResult задает значение результата диалогового окна для формы, скрывает модальное диалоговое окно и возвращает управление вызывающей форме.If the form is displayed as a dialog box, setting this property with a value from the DialogResult enumeration sets the value of the dialog box result for the form, hides the modal dialog box, and returns control to the calling form. Это свойство обычно задается свойством DialogResult элемента управления Button в форме.This property is typically set by the DialogResult property of a Button control on the form. Когда пользователь щелкает элемент управления Button, значение, присвоенное свойству DialogResult класса Button, присваивается свойству DialogResult формы.When the user clicks the Button control, the value assigned to the DialogResult property of the Button is assigned to the DialogResult property of the form.

При отображении формы в виде модального диалогового окна нажатие кнопки Закрыть (кнопка с крестиком в правом верхнем углу формы) приводит к скрытию формы, а свойство DialogResult имеет значение DialogResult.Cancel.When a form is displayed as a modal dialog box, clicking the Close button (the button with an X in the top-right corner of the form) causes the form to be hidden and the DialogResult property to be set to DialogResult.Cancel. Метод Close не вызывается автоматически, когда пользователь нажимает кнопку " Закрыть " диалогового окна или задает значение свойства DialogResult.The Close method is not automatically called when the user clicks the Close button of a dialog box or sets the value of the DialogResult property. Вместо этого форма скрыта, и ее можно снова отобразить, не создавая новый экземпляр диалогового окна.Instead, the form is hidden and can be shown again without creating a new instance of the dialog box. Из-за такого поведения необходимо вызвать метод Dispose формы, если форма больше не нужна приложению.Because of this behavior, you must call the Dispose method of the form when the form is no longer needed by your application.

С помощью этого свойства можно определить, как диалоговое окно закрывается для правильной обработки действий, выполняемых в диалоговом окне.You can use this property to determine how a dialog box is closed in order to properly process the actions performed in the dialog box.

Примечание

Можно переопределить значение, присваиваемое свойству DialogResult, когда пользователь нажмет кнопку " Закрыть ", задав свойство DialogResult в обработчике событий для события Closing формы.You can override the value assigned to the DialogResult property when the user clicks the Close button by setting the DialogResult property in an event handler for the Closing event of the form.

Примечание

Если Form отображается как немодальное окно, значение, возвращаемое свойством DialogResult, может не возвращать значение, присвоенное форме, так как ресурсы формы автоматически освобождаются при закрытии формы.If a Form is displayed as a modeless window, the value returned by the DialogResult property might not return a value assigned to the form because the form's resources are automatically released when the form is closed.

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