Question

我目前正在创建一个Windows Phone 7应用程序。如何将数组的所有值转换为textfile，以便打印出存储在另一个页面列表框中的特定数组中的所有值，然后存储在隔离的存储中。谢谢！：（

我尝试过这种方法，但它不起作用。 适用于ViewList.xaml.cs

    private void addListBtn_Click(object sender, RoutedEventArgs e)
    {
        //Obtain the virtual store for application
        IsolatedStorageFile myStore = IsolatedStorageFile.GetUserStoreForApplication();

        //Create a new folder and call it "ImageFolder"
        myStore.CreateDirectory("ListFolder");


        //Create a new file and assign a StreamWriter to the store and this new file (myFile.txt)
        //Also take the text contents from the txtWrite control and write it to myFile.txt

        StreamWriter writeFile = new StreamWriter(new IsolatedStorageFileStream("ListFolder\\myFile.txt", FileMode.OpenOrCreate, myStore));
        writeFile.WriteLine(retrieveDrinksListBox);
        writeFile.Close();
     }

FavouriteList.xaml.cs

    private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
    {


        //Obtain a virtual store for application
        IsolatedStorageFile myStore = IsolatedStorageFile.GetUserStoreForApplication();

        //This code will open and read the contents of retrieveDrinksListBox
        //Add exception in case the user attempts to click “Read button first.

        StreamReader readFile = null;

        try
        {
            readFile = new StreamReader(new IsolatedStorageFileStream("ListFolder\\myFile.txt", FileMode.Open, myStore));
            string fileText = readFile.ReadLine();

            if (fileText != "")
            {

                listNumberListBox.Items.Add("List 1");
            }

            //The control txtRead will display the text entered in the file
            listNumberListBox.Items.Add(fileText);
            readFile.Close();

        }

        catch
        {

            MessageBox.Show("Need to create directory and the file first.");

        }

Answer 1

您必须写下列表框的序列化项目/数据，而不是列表框本身。

再次阅读它们时，必须反序列化它们.MSDN上的BinaryFormatter示例有代码示例，向您展示如何将对象写入（文件）流以及如何从同一个流中再次恢复对象。

Answer 2

如果要在列表框中显示文件的内容（例如，行），请立即阅读整个文件内容并split行：

string fileText = readFile.ReadToEnd();
string[] lines = fileText.Split(Enviroment.NewLine.ToCharArray(), 
                                StringSplitOptions.RemoveEmptyEntries);
listNumberListBox.Items.AddRange(lines);

其他方式类似，从列表框中获取项目，joining使用新行，并立即转储到文件：

string fileContents = string.Join(Environment.NewLine, 
                                  retrieveDrinksListBox.Items.Cast<string>());
writeFile.WriteLine(fileContents);

如何将数组转换为文本文件？

2 个答案: