Returns the number of characters in a string or the number of bytes required to store a variable.
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.