写入文件但文件为空

Question

我正在将输出写入此文件，但它在Organized.txt中始终显示为空。如果我从sr2.WriteLine更改最后一个foreach循环，并且只使用WriteLine写入控制台，那么输出在控制台上正确显示，那么为什么它不能正确显示在文本文件中？

class Program 
    { 
     public static void Main() 
     { 

      string[] arr1 = new string[200]; 


      System.IO.StreamWriter sr2 = new System.IO.StreamWriter("OrganizedVersion.txt"); 




        // Dictionary, key is number from the list and the associated value is the number of times the key is found 
        Dictionary<string, int> occurrences = new Dictionary<string, int>(); 
        // Loop test data 
        foreach (string value in File.ReadLines("newWorkSheet.txt")) 
        { 
         if (occurrences.ContainsKey(value)) // Check if we have found this key before 
         { 
          // Key exists. Add number of occurrences for this key by one 
          occurrences[value]++; 
         } 
         else 
         { 
          // This is a new key so add it. Number 1 indicates that this key has been found one time 
          occurrences.Add(value, 1); 
         } 
        } 
        // Dump result 
        foreach (string key in occurrences.Keys) 
        { 
         sr2.WriteLine(key.ToString() + occurrences[key].ToString()); 
        }    

        Console.ReadLine(); 



     } 
    } 

Answer 1

您可以换行代码在using确保流被关闭。

 using(StreamWriter sr2 = new StreamWriter("OrganizedVersion.txt")) 
     { 
      .... 
     } 

或写入后，您可以flush或close。

sr2.close(); 

Answer 2

这是因为你实际上写OrganizedVersion.txt

貌似@Mathew还指出，你有没有关闭/清空你的缓冲区。

尝试using声明如下：

替换：

System.IO.StreamWriter sr2 = new System.IO.StreamWriter("OrganizedVersion.txt"); 

有了：

using (var sr2 = new System.IO.StreamWriter("OrganizedVersion.txt")) 
{ 
    // Your other code... 
}