URL Encoding Reference

Ive been trying to work with some url encoding and decoding options in VB.net and I already know of urlencode and urldecode however Id like to investigate further.

Ive been reading the article at 'http://www.w3schools.com/tags/ref_urlencode.asp' which seems to suggest that every character is encoded to Hex, but surely characters such as abcdefghigklmnopqrstuvwxyz are ok and doesnt need to be converted.

Does anyone have a list of the characters which need to be encoded to URL safe? I know characters such as % and & need to be encoded, but what others?

Thank you
tonelm54Asked:
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Pratima PharandeConnect With a Mentor Commented:
Dollar ("$")
 Ampersand ("&")
 Plus ("+")
 Comma (",")
 Forward slash/Virgule ("/")
 Colon (":")
 Semi-colon (";")
 Equals ("=")
 Question mark ("?")
 'At' symbol ("@")

For more infor refer
http://www.blooberry.com/indexdot/html/topics/urlencoding.htm
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Pratima PharandeConnect With a Mentor Commented:
; %3B
? %3F
/ %2F
: %3A
# %23
& %26
= %3D
+ %2B
$ %24
, %2C
<space> %20 or +
% %25
< %3C
> %3E
~ %7E
% %25
refer
http://www.permadi.com/tutorial/urlEncoding/
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