寫作從文本文件

Question

臨時數組我問這個之前，但大多數人並不明白我的問題。

我有兩個文本文件。 Gamenam.txt這是我正在閱讀的文本文件，以及gam enam_2.txt。

在gamenam.txt我有一個字符串是這樣的：

01456 
02456 
05215 
05111 
01421 
03117 
05771 
01542 
04331 
05231 

我已經寫了代碼to count number of times substring "05" appears in text file before substring "01"。

我被寫入到gamenam_1.txt輸出是：

01456 
02456 
05215 
05111 
2 
01421 
03117 
05771 
1 
01542 
04331 
05231 
1 

這是我寫的，實現

string line; 
int counter = 0; 
Boolean isFirstLine = true; 
try 
{ 
    StreamReader sr = new StreamReader("C:\\Files\\gamenam.txt"); 
    StreamWriter sw = new StreamWriter("C:\\Files\\gamenam_1.txt"); 

    while ((line = sr.ReadLine()) != null) 
    { 
     if (line.Substring(0, 2) == "01") 
     { 
      if (!isFirstLine) 
      { 
       sw.WriteLine(counter.ToString()); 
       counter = 0; 
      } 
     } 

     if (line.Substring(0, 2) == "05") 
     { 
      counter++; 
     } 

     sw.WriteLine(line); 

     if (sr.Peek() < 0) 
     { 
      sw.Write(counter.ToString()); 
     } 

     isFirstLine = false; 
    } 

    sr.Close(); 
    sw.Close(); 
} 
catch (Exception e) 
{ 
    Console.WriteLine("Exception: " + e.Message); 
} 
finally 
{ 
    Console.WriteLine("Exception finally block."); 
} 

該代碼是可以正常使用的代碼。

現在我必須編寫代碼在寫入行之前打印子串「05」的計數。

我的輸出應該是這個樣子：

2 
01456 
02456 
05215 
05111 
1 
01421 
03117 
05771 
1 
01542 
04331 
05231 

顯然我應該先寫行臨時字符串數組，計數，然後編寫計數，然後從後我臨時數組寫入線。

我新的發展，使我堅持試圖找出如何我做到這一點。

任何幫助將高度讚賞。

Answer 1

嘗試在控制檯窗口此

string line; 
int counter = 0; 
Boolean isFirstLine = true; 
try 
{ 
    StreamReader sr = new StreamReader("C:\\Files\\gamenam.txt"); 
    StreamWriter sw = new StreamWriter("C:\\Files\\gamenam_1.txt"); 

    var lines = new List<string>(); //Here goes the temp lines 
    while ((line = sr.ReadLine()) != null) 
    { 
     if (line.Substring(0, 2) == "01") 
     { 
      if (!isFirstLine) 
      { 
       sw.WriteLine(counter.ToString()); //write the number before the lines 
       foreach(var l in lines) 
        sw.WriteLine(l); //actually write the lines 
       counter = 0; 
       lines.Clear(); //clear the list for next round 
      } 
     } 

     if (line.Substring(0, 2) == "05") 
     { 
      counter++; 
     } 

     lines.add(line); //instead of writing, just adds the line to the temp list 

     if (sr.Peek() < 0) 
     { 
      sw.WriteLine(counter.ToString()); //writes everything left 
      foreach(var l in lines) 
       sw.WriteLine(l); 
     } 

     isFirstLine = false; 
    } 

    sr.Close(); 
    sw.Close(); 
} 
catch (Exception e) 
{ 
    Console.WriteLine("Exception: " + e.Message); 
} 
finally 
{ 
    Console.WriteLine("Exception finally block."); 
}