Question

This is the code:

private void retrivingText1()
{
   string startTag = "zethrone1_03510";//"<Translation>";
   string endTag = "-2.8";//"</Translation>";

   int startTagWidth = startTag.Length;
   int endTagWidth = endTag.Length;
   index = 0;

   w = new StreamWriter(@"d:\retrivedText1.txt");

   while (true)
   {
      index = f.IndexOf(startTag, index);

      if (index == -1)
      {
         break;
      }

      // else more to do - index now is positioned at first character of startTag 
      int start = index + startTagWidth;
      index = f.IndexOf(endTag, start + 1);

      if (index == -1)
      {
         break;
      }

      // found the endTag 
      string g = f.Substring(start, index - start);
      w.WriteLine(g);
   }

   w.Close();
}

The first work in the file that I want to retrieve is Hallo? which is coming right after zethrone1_03510 but between zethrone1_03510 and Hallo? there are two spaces so I’m getting it in the new text file like this Hallo?

And I want it to be Hallo? without the two spaces after zethrone1_03510 that’s one problem.

The second problem is that in the end of the file there is a text -2.8 so I want to retrieve all the text from the first Hallo? including it until the end of the file or until the last -2.8 including it too. Since there are more places after the Hallo? with -2.8

I tried to use LastIndexOf instead of IndexOf but it didn’t work.

And I know there are other ways but I want to do it with my code to fix/repair my code not using another way of codes. Whats wrong here ?

Thanks.

Answer 1

For your first problem you could use the Trim() method to get rid of the space. you could Trim your resulting string like: (" Hallo").Trim(); or variable.Trim(); which results in “Hallo”.

LastIndexOf should work with your second problem . You could use int position = f.LastIndexOf (endTag); And after you found the text you should break from the loop so you don’t have an endless loop.

http://msdn.microsoft.com/en-us/library/0w96zd3d.aspx

private void retrivingText1()
{
    string startTag = "zethrone1_03510";//"<Translation>";
    string endTag = "-2.8";//"</Translation>";
    int startTagWidth = startTag.Length;
    int endTagWidth = endTag.Length;
    index = 0;
    w = new StreamWriter(@"d:\retrivedText1.txt");
    while (true)
    {
        index = f.IndexOf(startTag, index);
        if (index == -1)
        {
            break;
        }
        // else more to do - index now is positioned at first character of startTag 
        int start = index + startTagWidth;
        index = f.LastIndexOf (endTag, start + 1);
        if (index == -1)
        {
            break;
        }
        // found the endTag 
        string g = f.Substring(start, index - start + endTagWidth).Trim(); //Trim the founded text so the start and ending spaces are removed.
        w.WriteLine(g);
        //break so you dont have an endless loop
        break;
    }
    w.Close();
}