在變量後命名文本文件

Question

嗨，我正在尋找名稱後TID變量是用戶輸入的交易號streamwriter。交易ID也是下面的transactionIDLabel.Text。我想知道如果我可以使交易ID（int TID或TranasactionIDLabel.Text）的文本文件的名稱？謝謝。

 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

嘗試

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

Answer 2

試試這個：

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