How many times have you written this to trim a trailing slash from a path:

if (myPath.EndsWith("\\"))   /* or "/" in the case of a URI  */
  myPath = myPath.Substring(0, myPath.Length-1);

Next time, try this:

myPath = myPath.TrimEnd(new char[]{'\\', '/'}); >> >

In addition to String.TrimStart() and String.TrimEnd(), there is an overload on String.Trim() that accepts a character array. There are good examples of usage in the MSDN Library.  Here are the links:  

System.String    Trim(char[])    TrimStart(char[])    TrimEnd(char[])