c# - 读写文本文件 Windows Phone 8.1

Question

我的目标是将“文本框”输入保存到文本文件，然后能够将保存的文本从同一文本文件加载回文本框。

我认为我的错误之一是在控制台上阅读。

namespace aaa
{
    public partial class MainPage : PhoneApplicationPage
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            string fileName = "test.txt";

            FileStream fs = null;

            fs = new FileStream(fileName, FileMode.CreateNew);
            StreamWriter writer = new StreamWriter(fs);

            writer.Write(textBox1.Text);
        }

        private void btnWrite_Click(object sender, RoutedEventArgs e)
        {

        }

        private void btnRead_Click(object sender, RoutedEventArgs e) 
        {
            public static void Main() 
            {
                using (StreamReader sr = new StreamReader("test.txt")) 
                {
                    string line;
                    while ((line = sr.ReadLine()) != null) 
                    {
                        Console.WriteLine(line);
                    }
                }
            }
        }   
    }
}

Answer 1

在 Windows Phone 运行时和 Windows Phone Silverlight 应用程序中使用 Windows.Storage.StorageFile。

Working with data and files 中的 MSDN 文档中有示例部分。特别参见 Quickstart: Local app data或 Quickstart: Roaming app data和 Quickstart: Reading and writing files

最后一个快速入门有直接在文件中读取和写入短文本片段的演示:

// Create sample file; replace if exists.
StorageFolder folder =
    Windows.Storage.ApplicationData.Current.LocalFolder;
StorageFile sampleFile =
    await folder.CreateFileAsync("test.txt", CreationCollisionOption.ReplaceExisting);
await Windows.Storage.FileIO.WriteTextAsync(sampleFile, textBox1.text);