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Comparison Operators (VB.Net and ASP Classic Cross Reference Guide)

By Mike Prestwood

VB.Net versus ASP Classic: A side by side comparison between VB.Net and ASP Classic.

Operators

A language symbol used for assignment, comparison, computational, or as a logical.

Comparison Operators

[Other Languages]

General Info: Round Floating Point Numbers

When comparing floating point numbers, make sure you round to an acceptable level of rounding for the type of application you are using.

Languages Focus

A comparison operator compares two values either literals as in "Hello" and 3 or variables as in X and Counter. Most languages use the same operators for comparing both numbers and strings. Perl, for example, uses separate sets of comparison operators for numbers and strings.

VB.Net: =, <>

Save as VB Classic. Common comparison operators:

=	equal
<>	not equal
<	less than
>	greater than
<=	less than or equal
>=	greater than or equal

Syntax Example: 1 certification question.

//Does VB.Net evaluate the math correctly? No!

If 0.1 + 0.1 + 0.1 = 0.3 Then
  MessageBox.Show("correct")
Else
  MessageBox.Show("not correct")
End If

ASP Classic: =, <>

Save as VB Classic. Common comparison operators:

=	equal
<>	not equal
<	less than
>	greater than
<=	less than or equal
>=	greater than or equal

Syntax Example:

//Does ASP evaluate the math correctly? No!

If .1 + .1 + .1 = .3 Then
  Response.Write "correct"
Else
  Response.Write "not correct"
End If

ASP Classic Comparison Operators (=, <>)