CompareString() versus AnsiCompareString()

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Question:

What is the difference between CompareString() and AnsiCompareString()?


Stefan Hoffmeister explains:

Some languages have characters outside of the ASCII character set; these two strings will compare differently depending on whether you use CompareString or AnsiCompareString:

CompareString()
'das'
'dau'
'daß'

'ß' is a German character, and with AnsiCompareString, the correct lexical order returned would be different:

AnsiCompareString()
'das'
'daß'
'dau'
AnsiCompareString observes the lexical order of your current locale - while CompareString only looks at the bits and bytes of the data. If you want to compare 'text', then do use AnsiCompareString. If you want to compare ASCII-only text (or just bytes), then use CompareString.

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