using System;
using System.IO;

class Example
{
    static void Main()
    {
        string contents = GetText(@"C:\temp", "example.txt");
        Console.WriteLine("Contents of the file:\n" + contents);
    }
   
    private static string GetText(string path, string filename)
    {
         var sr = File.OpenText(AppendPathSeparator(path) + filename);
         var text = sr.ReadToEnd();
         return text;
         
         // Declare a local function.
         string AppendPathSeparator(string filepath)
         {
            if (! filepath.EndsWith(@"\"))
               filepath += @"\";

            return filepath;   
         }
    } 
}