Compare filename to a mask

Compare filename to a mask

• Ekta

  Hi Haris,

  Have i reached u

  
  
  

• hadjici2

  I need to compare the filename against any legitimate filename mask, the ones used by windows including * and . Not just the ones listed.
  

• Ather.

  These functions work to match a filename to a wildcard pattern/mask/filter

      private bool FilenameMatchesFilter(string filename, string filter)
      {
        Match theMatch = Regex.Match(filename, WildcardToRegex(filter), RegexOptions.Compiled | RegexOptions.IgnoreCase);
        return (theMatch.Value == filename);
      }
  
      private String WildcardToRegex(String wildcard)
      {
        if (wildcard == null) return null;
        StringBuilder buffer = new StringBuilder();
        char[] chars = wildcard.ToCharArray();
        for (int index = 0; index < chars.Length; ++index)
        {
          if (chars[index] == '*')
            buffer.Append(".*");
          else if (chars[index] == ' ')
            buffer.Append(". ");          
          else if ("+()^$.{}[]|\\".IndexOf(chars[index]) != -1)
            buffer.Append('\\').Append(chars[index]); // prefix all metacharacters with backslash
          else
            buffer.Append(chars[index]);
        }
        return buffer.ToString().ToLower();
      } 
  
  

  
  

• Juan Carlos Ruiz Pacheco

  Hi ,

  Do you need to just compare against the 3 mentioned above

  or any jpg file and any file having name as warcraft(what ever the extension may be) and (is it rant.bmp or rant.bmp) any bmp or only the bmp file u have mentioned

  Anyways, since fileinfo.FullName is a string object , it has so many functions like "Equals","Compare","Contains","Endswith" and "Startswith".Using these functions u can compare any filename with any extension.

  Hope u can do it now.If not , revert back with ur queries.

  Cheers,

  Ch.T.Gopi Kumar.

  
  
  

• PhilippCH

  Hi Joel,
  
  the method GetFiles in the class System.IO.Directory gives you the possibility to specify a search pattern.
  
  If you already have a file list and cannot search through a directory, you'll need to check the names with regular expressions.
  
  --
  Regards,
  Daniel Kuppitz

  
  
• Compare filename to a mask