Here's a little something for the tip jar.  Growing up, I was privileged enough to attend "Old Skool Academy" located in scenic downtown Goochland, VA (Yes Virginia, there really *is* a Goochland, VA).  One of the things I learned was how to chop a slash off the end of a string.

if right(mystring,1) = "/" then

mystring=left(mystring,len(mystring) -1)

end if

Basically, if the last character of the string is a slash, then start at the left of mystring and count out how many characters long the string is, and subtract one which effectively removes the slash.  Then re-set mystring equal to that and you've removed the slash.

In ASP.NET you can simply say mystring=mystring.trim(char.parse("/"))

You could also use TrimEnd (as opposed to TrimStart).    Trim accepts a char array as input because you can chop off multiple characters at once.  Here's the scoop from MSDN including both C# and VB.net examples.