Comparison Operators
There
are
three main comparison operators: <
(less than),
>
(greater than), and =
(equal to). They can be used individually, or any two operators can
be combined with each other. Their general syntax is:
result =expression1
<operator>expression2
The resulting expression is True
(-1),
False
(0), or Null
. A
Null
results if and only if either
expression1
or
expression2
itself is
Null
.
What follows is a list of all the comparison operators supported by
VB .NET, as well as an explanation of the condition required for the
comparison to result in True
:
-
>
expression1
is greater than and not equal toexpression2
.-
<
expression1
is less than and not equal toexpression2
.-
<>
expression1
is not equal toexpression2
(less than or greater than).-
>=
expression1
is greater than or equal toexpression2
.-
<=
expression1
is less than or equal toexpression2
.-
=
expression1
is equal toexpression2
.
Comparison operators can be used with both numeric and string
variables. However, if one expression is numeric and the other is a
string, the numeric expression will always be “less than”
the string expression. If both expression1
and expression2
are strings, the
“greatest” string is the one that is the longest. If the
strings are of equal length, the comparison is based on the value of
the Option
Compare
setting. If
its value is Binary
, the comparison is case
sensitive. (Lowercase letters are “greater” than their
uppercase counterparts.) If its value is Text
, the comparison ...
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