Using StreamReader to check if a file contains a string

Question

I have a string that is args[0].

Here is my code so far:

static void Main(string[] args)
{
    string latestversion = args[0];
    // cr         


        

Answer 1

1. You should not add the ';' at the end of the using statement.

2. Code to work:

   string latestversion = args[0];
   
   using (StreamReader sr = new StreamReader("C:\\Work\\list.txt"))
   using (StreamWriter sw = new StreamWriter("C:\\Work\\otherFile.txt"))
   {
           // loop by lines - for big files
           string line = sr.ReadLine();
           bool flag = false;
           while (line != null)
           {
               if (line.IndexOf(latestversion) > -1)
               {
                   flag = true;
                   break;
               }
               line = sr.ReadLine();
           }
           if (flag)
               sw.Write("1");
           else
               sw.Write("0");
   
           // other solution - for small files
           var fileContents = sr.ReadToEnd();
           {
               if (fileContents.IndexOf(latestversion) > -1)
                   sw.Write("1");
               else
                   sw.Write("0");
           }
   }