Len(string | varname)
Any valid string expression. If string contains Null, Null is returned.
Any valid variable name. If varname contains Null, Null is returned.
The following example uses the Len function to return the number of characters in a string:
Dim MyString MyString = Len("VBSCRIPT") ' MyString contains 8.
The LenB function is used with byte data contained in a string. Instead of returning the number of characters in a string, LenB returns the number of bytes used to represent that string.