在Variable之后命名文本文件

Question

您好我想在TID变量之后命名一个文件，该变量是用户在streamwriter中输入的交易号。交易ID也是下面的transactionIDLabel.Text。我想知道如果我可以将事务ID（int TID或TranasactionIDLabel.Text）设为文本文件的名称？感谢。

     int TID;

   private void button2_Click(object sender, EventArgs e)
    {
        StreamWriter outputFile;
        outputFile = File.CreateText ("TID.txt");

        outputFile.WriteLine(InvestorNameLabel.Text);
        outputFile.WriteLine(AmountLabel.Text);
        outputFile.WriteLine(DateLabel.Text);
        outputFile.WriteLine(DaysInvestedLabel.Text);
        outputFile.WriteLine(RateLabel.Text);
        outputFile.WriteLine(InterestAmountLabel.Text);
        outputFile.WriteLine(TransactionIDLabel.Text);

        outputFile.Close();
    }

Answer 1

试

outputFile = File.CreateText (TID.ToString()+".txt");

Answer 2

试试这个：

 using(StreamWriter sw=new StreamWriter(string.Concat(TransactionIDLabel.Text,".txt")))
                {
                 // Your code
                }