Readng text files in c

class ReadFromFile
{
    static void Main()
    {
        // The files used in this example are created in the topic 
        // How to: Write to a Text File. You can change the path and 
        // file name to substitute text files of your own. 
 
        // Example #1 
        // Read the file as one string. 
        string text = System.IO.File.ReadAllText(@"C:\Users\Public\TestFolder\WriteText.txt");
 
        // Display the file contents to the console. Variable text is a string.
        System.Console.WriteLine("Contents of WriteText.txt = {0}", text);
 
        // Example #2 
        // Read each line of the file into a string array. Each element 
        // of the array is one line of the file. 
        string[] lines = System.IO.File.ReadAllLines(@"C:\Users\Public\TestFolder\WriteLines2.txt");
 
        // Display the file contents by using a foreach loop.
        System.Console.WriteLine("Contents of WriteLines2.txt = ");
        foreach (string line in lines)
        {
            // Use a tab to indent each line of the file.
            Console.WriteLine("\t" + line);
        }
 
        // Keep the console window open in debug mode.
        Console.WriteLine("Press any key to exit.");
        System.Console.ReadKey();
    }
}
<source>