如何用外部文本文件填充文本框，并在此之后添加单词

本文关键字：文本 在此之后 添加 单词 填充 何用外 文件 | 更新日期: 2023-09-27 18:03:36

我试图用外部文本文件中的数据填充visual studio 2012文本框，在此之后，当您执行程序时，您应该能够编写对该文本框的更改并将其保存在那里，但我得到错误，在屏幕截图中说明。而且，我是在虚拟机上运行Windows 8的!

[截图]:https://i.stack.imgur.com/zFSi4.png "截图

下面是填充文本框的代码:

private void Page_Loaded(object sender, RoutedEventArgs e)
    {
        LoadWords(@"Assets'AdminPageKS1words.txt");
    }
    async private void LoadWords(string filename)
    {
        var wordList = new List<String>();
        // this method reads line separated words from a text file and populates a List object // 
        Windows.Storage.StorageFolder localFolder = Windows.ApplicationModel.Package.Current.InstalledLocation;
        // begin the file read operation 
        try
        {
            // open and read in the word list into an object called words 
            StorageFile sampleFile = await localFolder.GetFileAsync(filename);
            var words = await FileIO.ReadLinesAsync(sampleFile);
            // add each word returned to a list of words declared 
            // globally as List wordList = new List();
            foreach (var word in words) 
            { 
                wordList.Add(word); 
            }
            List1.ItemsSource = wordList;
        }
        catch (Exception)
        {
            // handle any errors with reading the file
        }
下面是SAVE按钮的代码: 
async private void SaveButton_Click(object sender, RoutedEventArgs e)
    {
 // locate the local storage folder on the device
  Windows.Storage.StorageFolder localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
// create a new text file in the local folder called “File.txt”
StorageFile sampleFile = await localFolder.CreateFileAsync("File.txt",CreationCollisionOption.ReplaceExisting);
// write text to the file just created – text comes from a textblock called wordlistBox
await FileIO.WriteTextAsync(sampleFile, List1.Text); 
 // display a message saying that file is saved.
messageLabel.Text = keystage + "File saved";
    }
    public string keystage { get; set; }

如何用外部文本文件填充文本框，并在此之后添加单词

如错误信息所示，List1 (a TextBox)没有ItemsSource属性。它有Text的性质。

但这不是唯一的问题。因为你的wordList对象是一个列表。所以你需要把它转换成一个普通的字符串。

一个解决方案是这样做: 
List1.Text = string.Join(Environment.NewLine, wordlist);

，它将所有行连接在一起，中间有换行符。

还要确保您的TextBox配置正确，AcceptsReturn设置为true，以便它将显示换行

我看到List1是TextBox，而不是ListBox，试试:

.......
string text="";
foreach (var word in words) 
            { 
                text+=word+" "; 
            }
      List1.Text=text;

或者你可以定义一个ListBox listbox1:

 foreach (var word in words) 
            { 
                wordList.Add(word); 
            }
            listbox1.ItemsSource = wordList;
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