CODEWITHSUNDEEP
vb6
webdad3
webdad3

Reputation: 9080

What does this CASE Syntax mean? - VB6

I have the following code in the VB6 project I just inherited.

Case Is > "S"
Case Is > "Q"
Case Is >= "A"
Case Is = "M"

The only one I sort of understand is the Case Is = "M"

What do the ">" (greater than) symbols represent?

Upvotes: 3

Views: 399

Answers (3)

MarkJ
MarkJ

Reputation: 30408

Some links from the Visual Basic 6 manual, rather than later versions :)

Upvotes: 1

Richard Marskell - Drackir
Richard Marskell - Drackir

Reputation: 13312

It compares them alphabetically. See the section here on MSDN entitled "Comparing Strings".

From the docs:

When you compare strings, the string expressions are evaluated based on their alphabetical sort order, which depends on the Option Compare setting.

Option Compare Binary bases string comparisons on a sort order derived from the internal binary representations of the characters. The sort order is determined by the code page. The following example shows a typical binary sort order.

A < B < E < Z < a < b < e < z < À < Ê < Ø < à < ê < ø

Option Compare Text bases string comparisons on a case-insensitive, textual sort order determined by your application's locale. When you set Option Compare Text and sort the characters in the preceding example, the following text sort order applies:

(A=a) < (À= à) < (B=b) < (E=e) < (Ê= ê) < (Ø = ø) < (Z=z)

Upvotes: 3

GendoIkari
GendoIkari

Reputation: 11914

Strings can be compared with greater than or less than just like numbers can. It should compare their ascii values, basically.

http://www.vbexplorer.com/VBExplorer/Focus/strings_tutorial_2.asp

http://msdn.microsoft.com/en-us/library/215yacb6(v=vs.80).aspx

Upvotes: 3

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