Regarding File IO for C#.

I am not sure why my code does not work.

I have one version for forloop and another one for while loop,
However, the output that is saved in "Discrepancy1.txt" appears to be wrong after the compilation.
Do you have any clue?

(For loop version)
TextReader Lbloomberg = new StreamReader("Lbloomberg.txt");
TextReader Reuters = new StreamReader("Reuters.txt");
TextWriter Discrepancy1 = new StreamWriter("Discrepancy1.txt");
string Lbloomberg_item;
string Reuters_item ;
//TextWriter Discrepancy2 = new StreamWriter("Discrepancy2.txt");

for (int num_Lbloomberg = 0; num_Lbloomberg < 2000; num_Lbloomberg++) //For the data that Lbloomberg has but not Reuters
{
   Lbloomberg_item = Lbloomberg.ReadLine();
   bool a = false;
   for (int num_Reuters = 0; num_Reuters < 5000; num_Reuters++)
   {
      Reuters_item = Reuters.ReadLine();
      if (Lbloomberg_item == Reuters_item)
      {
         a = true;
      }
   }
   if (a == true)
   {
      Discrepancy1.WriteLine(Lbloomberg_item);
   }
}

Lbloomberg.Close();
Reuters.Close();

return;
}

(While Loop Version)

while ((Lbloomberg_item = Lbloomberg.ReadLine()) != null)//break right after searching UBAN . (UBAN .1)
{
   bool a = false;
   while ((Reuters_item = Reuters.ReadLine()) != null)//break right after searching (CTC .1)
   {
      if (Lbloomberg_item == Reuters_item)
      {
         a = true;
      }
   }
   if (a == true)
   {
      Discrepancy1.WriteLine(Lbloomberg_item);
   }
}

Lbloomberg.Close();
Reuters.Close();

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Michael Cline15y ago
Make sure you close Discrepancy1 as well, I ran into a problem with that myself. But the previous poster is right, you should be checking if they are not equal.
0
Frogleg15y ago
Are you trying to compare two text files and list the differences ?
if so then
  if (Lbloomberg_item == Reuters_item)
      {
         a = true;
      }
shoud be
if (Lbloomberg_item != Reuters_item) // !=
      {
         a = true;
      }
0