C# application data folder（取得本機非漫遊使用者的應用程式資料路徑。） – jashliao部落格

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();

}

privatevoid 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 {}

}