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.NET Forum / Languages / C# / November 2007UCS and BMP Character Sets
HI All, I' working on an ASN.1 parser. The Content Octets (data values) are stored in a byte[]. The conversion of byte[] to char[] is fairly trivial. BMP is a special case of UCS, using the lower 65 thousand characters. Reference http://en.wikipedia.org/wiki/Universal_Character_Set#Encoding_forms_of_the_Unive rsal_Character_Set How do I specify a character set of UCS (ISO/IEC 10646) when invoking a string constructor? Thanks, Jeff Jeffrey Walton > I' working on an ASN.1 parser. The Content Octets (data values) are > stored in a byte[]. The conversion of byte[] to char[] is fairly > trivial. BMP is a special case of UCS, using the lower 65 thousand > characters. <snip> > How do I specify a character set of UCS (ISO/IEC 10646) when invoking > a string constructor? You don't build a string from bytes, you build it from Unicode characters (or UTF-16 code points really). You want to use System.Text.Encoding.GetString(byte[]) to convert from bytes to a string.  SignatureJon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet World class .NET training in the UK: http://iterativetraining.co.uk Hi John, Thanks for the quick reply. > You don't build a string from bytes, you build it from Unicode > characters (or UTF-16 code points really). I know I am off slightly with respect to the paradigm. > You want to use System.Text.Encoding.GetString(byte[]) to convert from > bytes to a string. Thank you very much. I was cruising your site earlier. The example presented is based on a Stream (but I have a byte array). I was hoping for a more applicable answer. I also saw a T.61 string is availble as a CodePage (http:// msdn2.microsoft.com/en-us/library/system.text.encodinginfo.aspx). How does on set it in C# (or is there an overload in System.Text.Encoding.GetString() which uses it?). Thanks Again, Jeff > > I' working on an ASN.1 parser. The Content Octets (data values) are > > stored in a byte[]. The conversion of byte[] to char[] is fairly [quoted text clipped - 15 lines] > Jon Skeet - <sk...@pobox.com>http://www.pobox.com/~skeet Blog:http://www.msmvps.com/jon.skeet > World class .NET training in the UK:http://iterativetraining.co.uk > > You don't build a string from bytes, you build it from Unicode > > characters (or UTF-16 code points really). [quoted text clipped - 5 lines] > presented is based on a Stream (but I have a byte array). I was hoping > for a more applicable answer. Okay, to load a string from a Stream, you use a StreamReader with a suitable Encoding. > I also saw a T.61 string is availble as a CodePage (http:// > msdn2.microsoft.com/en-us/library/system.text.encodinginfo.aspx). How > does on set it in C# (or is there an overload in > System.Text.Encoding.GetString() which uses it?). You can supply a code page to Encoding.GetEncoding. SignatureJon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet World class .NET training in the UK: http://iterativetraining.co.uk Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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