C# 以变量命名文本文件

您好，我想用TID变量命名一个文件，该变量是用户在

streamwriter

中输入的交易编号。事务ID也是下面的

transactionIDLabel.Text

。我想知道是否可以将事务ID（

int-TID

或

tranaActionIDLabel.Text

）作为文本文件的名称？谢谢

     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();
    }

试一试

试试这个：

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

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