.NET Framework Standard Library Annotated Reference, Volume 1: Base Class Library and Extended Numerics Library

Example

using System;
using System.IO;

namespace Samples
{
  public class PathTooLongExceptionSample
  {
    public static void Main()
    {
      try
      {
        string p = @"This\Is\A\Very\Long\Path\" +
                   @"But\It\Is\Only\An\Example\";
        string s = @"C:\" + p + p + p + p + p + p +
                   "filename.txt";
        FileStream fs = File.Create(s);
      }
      catch(PathTooLongException e)
      {
        Console.WriteLine("Exception: {0}", e);
      }
    }
  }
}

The output is

 Exception: System.IO.PathTooLongException: The path is too long after being fully qualified. Make sure path is less than 260 characters. at System.IO.Path.nGetFullPathHelper(String path, Char[] invalidPathChars, Char[] whitespaceChars, Char directorySeparator, Char altDirectorySeparator, Boolean fullCheck, String& newPath) at System.IO.Path.GetFullPathInternal(String ...