There are words which cannot be used as the name of an entity or application:
abstract
addressof
App_Code
App_Data
as
asp
aspx
assert
base
bool
boolean
break
byte
case
catch
char
checked
class
clear
close
config
const
context
continue
cs
css
date
decimal
default
delegate
delete
dim
do
document
double
else
end
enum
escape
eval
event
exception
explicit
extends
extern
FALSE
field
final
finally
fixed
float
for
foreach
friend
function
get
goto
handles
if
images
implements
implicit
import
in
index
inherits
instanceof
int
interface
internal
is
java
js
jsp
lock
long
me
mustoverride
mybase
myclass
namespace
native
new
next
nothing
notoverridable
null
object
open
operator
out
overridable
override
overrides
package
page
params
private
protected
public
put
readonly
redim
ref
return
sbyte
screen
sealed
shadowing
short
sizeof
stackalloc
static
strictfp
string
struct
sub
substring
super
switch
synchronized
target
this
throw
throws
tostring
transient
TRUE
try
typeof
uint
ulong
unchecked
undefined
unsafe
until
ushort
using
value
var
vb
virtual
void
volatile
while
window
withevents
write
