"François" <Franois@discussions.microsoft.com> wrote in message
news:CFF5B50D-F891-461E-968E-9E4154B469EC@microsoft.com...
> I want to build an index to a list of words based on the first letter of
> these words for 4 languages ( french english czech spanish ).
>
> In english there is no problem. There is no accent and all letter are
based
> on only one character.
>
> In french there are accents, and as fas as i know letters are all one
> character. Capitalizing a word dont change its meaning.
>
> In other languages there may be accents and letter may be composed of more
> than one character and capitalization can change the meaning of a word.
>
> -----
> Here an example in french of what i am seeking.
>
> For the words :
> Abandon
> École
> ennui
> fuite
>
> i would like to obtain the following entries :
> A ( -> Abandon)
> E ( -> École, ennui)
> F ( -> fuite )
>
> -----
>
> I can build for french a lookup table and so have a solution; french
being
> my maternal language.
>
> But i cannot for czech, etc.
>
> -----
>
> My questions are :
>
> 1) Even if for french and english my aim is meaningfull, is it meaningfull
> for czech and spanish?
> 2) if 1) is answered yes, does the dotnet framework can help me?
>
> I had a look at CompareInfo and SortKey classes.
>
> Thank you.
>
>

"François" <Franois@discussions.microsoft.com> wrote in message
news:266A2117-162C-4345-81E4-1C1E3DBD16F2@microsoft.com...
> Thank you.
>
> Here's an other examples. This time in czech ( of which language i know
> nothing ).
>
> The following words are sorted ( ignoreCase ) with the locale cs-CZ.
>
> Cyklopentan
> Cástice
> Dusík
> Ethanol
> Chlor
> Fluor
> Glutaraldehyd
> Hydroxid
> Chlor
>
> Using the first two bytes of KeyData
> [ ...CompareInfo.GetSortKey(s,CompareOptions.IgnoreCase ).KeyData ]
> as an indicator to the effect that a break occurs on the first letter of
the
> words,
> i obtain the following index.
>
> C C D E F G H C
>
> Using the first two bytes of KeyData gives satisfying results for english
> and almost satisfying results for french ( I cant for example map É to
E ).
>
> "C C D E F G H C" looks weird and ( must be "C C D E F G H Ch" ).
>
> The Keydata for Chlor in ( cs-CZ, CompareOptions.IgnoreCase ) reads "14 46
> 14 72 14 124 14 138 1 1 1 1 0" . There is only 4 byte pairs instead of 5
even
> if "Chlor" counts 5 characters.
> So the base API knows that "Ch" is only one letter.
> It will be interesting to have a reversed map from (14,46) to Ch. ???
>
> I had a look at the Unicode web site on "NFD".
> That seems interesting. It will permit to map É to E in french.
> Will it help me knowing that "Ch" is a letter in czech. What about the
> framework and NFD?
>
> Thanks again.

"François" <Franois@discussions.microsoft.com> wrote in message
news:3F95F860-AE5F-4B70-A1CF-47DE9D09544A@microsoft.com...
> Thanks.
>
> I had a look a UnicodeData.txt and the ICU website.
>
> I will build a simple lookup table for each of the languages I intend to
> support using ICU collation charts and ICU collation customization rules.
>
> These tables will help me determine the index entry for a word( eg
École ->
> E in french ; Chlor -> CH in Czech ).
>
> I am a novice in unicode.
> Your help was precious.
>