Application.UserAppDataPath Application.UserAppDataPath Application.UserAppDataPath Application.UserAppDataPath Property

Определение

Получает путь для данных приложения пользователя.Gets the path for the application data of a user.

public:
 static property System::String ^ UserAppDataPath { System::String ^ get(); };
public static string UserAppDataPath { get; }
member this.UserAppDataPath : string
Public Shared ReadOnly Property UserAppDataPath As String

Значение свойства

Путь для данных приложения пользователя.The path for the application data of a user.

Примеры

В следующем примере кода показаны две формы и выход из приложения, при закрытии обе формы.The following code example displays two forms and exits the application when both forms are closed. Когда приложение запустится и завершает работу, позиция каждой формы запоминается.When the application starts and exits, the position of each form is remembered. В этом примере показано использование UserAppDataPath свойство для хранения данных приложений для пользователя.This example demonstrates using the UserAppDataPath property to store application data for the user.

Класс MyApplicationContext наследует от ApplicationContext и отслеживает, когда каждая форма закрывается и выходит из текущего потока, если они оба.The class MyApplicationContext inherits from ApplicationContext and keeps track when each form is closed, and exits the current thread when they both are. Класс сохраняет позиции каждой формы для пользователя.The class stores the positions of each form for the user. Данные позиции формы сохраняются в файле под названием Appdata.txt , созданный в месте UserAppDataPath.The form position data is stored in a file titled Appdata.txt that is created in the location determined by UserAppDataPath. Main Вызовы методов Application.Run(context) для запуска приложения, получившего ApplicationContext.The Main method calls Application.Run(context) to start the application given the ApplicationContext.

Этот код является выдержкой из примера, приведенного в ApplicationContext Общие сведения о классе.This code is an excerpt from the example shown in the ApplicationContext class overview. Для краткости изложения код не отображается.Some code is not shown for the purpose of brevity. См. в разделе ApplicationContext для кода.See ApplicationContext for the whole code listing.

   MyApplicationContext()
   {
      _formCount = 0;
      
      // Handle the ApplicationExit event to know when the application is exiting.
      Application::ApplicationExit += gcnew EventHandler( this, &MyApplicationContext::OnApplicationExit );
      try
      {
         
         // Create a file that the application will store user specific data in.
         _userData = gcnew FileStream( String::Concat( Application::UserAppDataPath, "\\appdata.txt" ),FileMode::OpenOrCreate );
      }
      catch ( IOException^ e ) 
      {
         
         // Inform the user that an error occurred.
         MessageBox::Show( "An error occurred while attempting to show the application. The error is: {0}", dynamic_cast<String^>(e) );
         
         // Exit the current thread instead of showing the windows.
         ExitThread();
      }

      
      // Create both application forms and handle the Closed event
      // to know when both forms are closed.
      _form1 = gcnew AppForm1;
      _form1->Closed += gcnew EventHandler( this, &MyApplicationContext::OnFormClosed );
      _form1->Closing += gcnew CancelEventHandler( this, &MyApplicationContext::OnFormClosing );
      _formCount++;
      _form2 = gcnew AppForm2;
      _form2->Closed += gcnew EventHandler( this, &MyApplicationContext::OnFormClosed );
      _form2->Closing += gcnew CancelEventHandler( this, &MyApplicationContext::OnFormClosing );
      _formCount++;
      
      // Get the form positions based upon the user specific data.
      if ( ReadFormDataFromFile() )
      {
         
         // If the data was read from the file, set the form
         // positions manually.
         _form1->StartPosition = FormStartPosition::Manual;
         _form2->StartPosition = FormStartPosition::Manual;
         _form1->Bounds = _form1Position;
         _form2->Bounds = _form2Position;
      }

      
      // Show both forms.
      _form1->Show();
      _form2->Show();
   }

   void OnApplicationExit( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      
      // When the application is exiting, write the application data to the
      // user file and close it.
      WriteFormDataToFile();
      try
      {
         
         // Ignore any errors that might occur while closing the file handle.
         _userData->Close();
      }
      catch ( Exception^ ) 
      {
      }

   }

private:

private MyApplicationContext()
{
    _formCount = 0;

    // Handle the ApplicationExit event to know when the application is exiting.
    Application.ApplicationExit += new EventHandler(this.OnApplicationExit);

    try
    {
        // Create a file that the application will store user specific data in.
        _userData = new FileStream(Application.UserAppDataPath + "\\appdata.txt", FileMode.OpenOrCreate);

    }
    catch (IOException e)
    {
        // Inform the user that an error occurred.
        MessageBox.Show("An error occurred while attempting to show the application." +
                        "The error is:" + e.ToString());

        // Exit the current thread instead of showing the windows.
        ExitThread();
    }

    // Create both application forms and handle the Closed event
    // to know when both forms are closed.
    _form1 = new AppForm1();
    _form1.Closed += new EventHandler(OnFormClosed);
    _form1.Closing += new CancelEventHandler(OnFormClosing);
    _formCount++;

    _form2 = new AppForm2();
    _form2.Closed += new EventHandler(OnFormClosed);
    _form2.Closing += new CancelEventHandler(OnFormClosing);
    _formCount++;

    // Get the form positions based upon the user specific data.
    if (ReadFormDataFromFile())
    {
        // If the data was read from the file, set the form
        // positions manually.
        _form1.StartPosition = FormStartPosition.Manual;
        _form2.StartPosition = FormStartPosition.Manual;

        _form1.Bounds = _form1Position;
        _form2.Bounds = _form2Position;
    }

    // Show both forms.
    _form1.Show();
    _form2.Show();
}

private void OnApplicationExit(object sender, EventArgs e)
{
    // When the application is exiting, write the application data to the
    // user file and close it.
    WriteFormDataToFile();

    try
    {
        // Ignore any errors that might occur while closing the file handle.
        _userData.Close();
    }
    catch { }
}
Public Sub New()
    MyBase.New()
    _formCount = 0

    ' Handle the ApplicationExit event to know when the application is exiting.
    AddHandler Application.ApplicationExit, AddressOf OnApplicationExit

    Try
        ' Create a file that the application will store user specific data in.
        _userData = New FileStream(Application.UserAppDataPath + "\appdata.txt", FileMode.OpenOrCreate)

    Catch e As IOException
        ' Inform the user that an error occurred.
        MessageBox.Show("An error occurred while attempting to show the application." +
                        "The error is:" + e.ToString())

        ' Exit the current thread instead of showing the windows.
        ExitThread()
    End Try

    ' Create both application forms and handle the Closed event
    ' to know when both forms are closed.
    _form1 = New AppForm1()
    AddHandler _form1.Closed, AddressOf OnFormClosed
    AddHandler _form1.Closing, AddressOf OnFormClosing
    _formCount = _formCount + 1

    _form2 = New AppForm2()
    AddHandler _form2.Closed, AddressOf OnFormClosed
    AddHandler _form2.Closing, AddressOf OnFormClosing
    _formCount = _formCount + 1

    ' Get the form positions based upon the user specific data.
    If (ReadFormDataFromFile()) Then
        ' If the data was read from the file, set the form
        ' positions manually.
        _form1.StartPosition = FormStartPosition.Manual
        _form2.StartPosition = FormStartPosition.Manual

        _form1.Bounds = _form1Position
        _form2.Bounds = _form2Position
    End If

    ' Show both forms.
    _form1.Show()
    _form2.Show()
End Sub

Private Sub OnApplicationExit(ByVal sender As Object, ByVal e As EventArgs)
    ' When the application is exiting, write the application data to the
    ' user file and close it.
    WriteFormDataToFile()

    Try
        ' Ignore any errors that might occur while closing the file handle.
        _userData.Close()
    Catch
    End Try
End Sub

Комментарии

Если путь не существует, он создается в следующем формате:If a path does not exist, one is created in the following format:

Базовый путь\CompanyName\ProductName\ProductVersionBase Path\CompanyName\ProductName\ProductVersion

Данные, хранящиеся в данном контуре является частью перемещаемого профиля пользователя.Data stored in this path is part of user profile that is enabled for roaming. Перемещаемый пользователь работает на более чем один компьютер в сети.A roaming user works on more than one computer in a network. Профиль пользователя для перемещаемого профиля пользователя хранится на сервере в сети и загружается в систему при входе пользователя в систему.The user profile for a roaming user is kept on a server on the network and is loaded onto a system when the user logs on. Для профиля пользователя, следует учитывать при перемещении операционная система должна поддерживать перемещаемые профили, и она должна быть включена.For a user profile to be considered for roaming, the operating system must support roaming profiles and it must be enabled.

Типичный базовый путь — C:\Documents and Settings\username\Application Data.A typical base path is C:\Documents and Settings\username\Application Data. Этот путь будет отличаться, тем не менее, если приложение Windows Forms развертывается с помощью ClickOnceClickOnce.This path will be different, however, if the Windows Forms application is deployed by using ClickOnceClickOnce. ClickOnceClickOnce создает свой собственный каталог данных приложения, которая изолирована от всех других приложений.creates its own application data directory that is isolated from all other applications. Дополнительные сведения см. в разделе доступ к локальным и удаленным данным в приложениях ClickOnce.For more information, see Accessing Local and Remote Data in ClickOnce Applications.

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