Question

我希望程序运行，每次用户点击按钮，然后我想将其添加到文件中，截至目前，程序会使用用户输入的新信息覆盖内容。

    private void tradeMethod()
    {
        newTrade.Analysis = textBox1.Text;
        newTrade.Trend = textBox2.Text;
        newTrade.entryLevel = double.Parse(textBox3.Text);
        newTrade.bottomLine = double.Parse(textBox4.Text);
        newTrade.Picture = textBox5.Text;
        newTrade.entrySetup = textBox6.Text;
        string Analysis = newTrade.Analysis;
        string Trend = newTrade.Trend;
        double entryLevel = newTrade.entryLevel;
        double bottomLine = newTrade.bottomLine;
        string Picture = newTrade.Picture;
        string entrySetup = newTrade.entrySetup;


        string[] info = { "The analysis: "+Analysis,"The Trend: " +Trend, "The entry price: " + entryLevel.ToString(), 
                            "The profit/loss of the trade: " + bottomLine.ToString(),"The entry of the trade was: " + entrySetup, "The screnshot of the picture: " +Picture};
        System.IO.File.WriteAllLines(@"C:\\Users\\Samuel\\Documents\\Visual Studio 2013\\Projects\\WindowsFormsApplication8\\WindowsFormsApplication8\\trade.txt", info);
    }

    private void button1_Click(object sender, EventArgs e)
    {

        tradeMethod();

    }

    private void button2_Click(object sender, EventArgs e)
    {
        this.Close();
    }

    private void button3_Click(object sender, EventArgs e)
    {
        try
        {
            StreamReader inputFile;
            string addrLine;

            inputFile = File.OpenText("C:\\Users\\Samuel\\Documents\\Visual Studio 2013\\Projects\\WindowsFormsApplication8\\WindowsFormsApplication8\\trade.txt");
            while (!inputFile.EndOfStream)
            {
                addrLine = inputFile.ReadLine();
                MessageBox.Show(addrLine);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }


}

Answer 1

Alessandro D'Andria的评论是正确的。使用方法：

System.IO.File.WriteAllLines

每次都会覆盖该文件，删除所有以前的内容。根据{{3}}文档，您应该使用：

System.IO.File.AppendAllLines

如果不存在新文件，此方法将处理创建新文件。

将输入附加到文件

1 个答案: