Question

我有一个列表框，显示文本文件中的行。我怎么能这样做，以便我可以点击列表框中的项目并将其从列表框和文本文件中删除

   private void Read()
    {
        string filePath = @"//Filepath";

        List<String> listOfDels = viewlist.listDeliveries();

        using (var streamReader = new StreamReader(filePath, Encoding.Default))
        {
            while (!streamReader.EndOfStream)
            {
                listOfDels.Add(streamReader.ReadLine());
                listBox1.Items.Clear();

                listBox1.Items.AddRange(listOfDels.ToArray());
            }
        }
    }

    private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
    { //Remove line from txt file
    }

Answer 1

string tempFile = Path.GetTempFileName();

using(var sr = new StreamReader("file.txt"))
{
using(var sw = new StreamWriter(tempFile))
{
    string line;

    while((line = sr.ReadLine()) != null)
    {
         if(line != "removeme")
             sw.WriteLine(line);
    }
}
}

File.Delete("file.txt");
File.Move(tempFile, "file.txt");

从文本文件中删除选定的索引

1 个答案: