trim and pure apparently whitespace strings

[John A Grandy]

has anyone encountered an apparently pure whitespace string (debug mode
mouse-over) that when TRIM'd does not result in a null-string ?

how to determine any special characters that may be present in the string ?

 

[Dan Bass]

trimming a string with just spaces will return an empty string ("") not a
null string (null)...

The easiest way to evaluate the string would be to write it to disk. Create
a file and write the string out, then analyse the file in a hex editor to
check for excape characters.

 

[John A Grandy]

i was using "null-string" in the traditional sense of a reference to a
String datatype object that consists of 0 characters -- not a
"null-reference" (a reference to Nothing)

actually, i found this very useful function for discovering hidden
characters in a string:

Uri.HexEscape()