C#.net identify zip file

Question

I am currently using the SharpZip api to handle my zip file entries. It works splendid for zipping and unzipping. Though, I am having trouble identifying if a file is a zip

Answer 1

You can either:

• Use a try-catch structure and try to read the structure of a potential zip file
• Parse the file header to see if it is a zip file

ZIP files always start with 0x04034b50 as its first 4 bytes ( http://en.wikipedia.org/wiki/Zip_(file_format)#File_headers )