SergioTarrillo - RichWeblog

   1:  protected Boolean IsCustomMobileBrowser()

   2:  {

   3:      //GETS THE CURRENT USER CONTEXT

   4:      HttpContext context = HttpContext.Current;

   5:   

   6:      //FIRST TRY BUILT IN ASP.NT CHECK

   7:      if (context.Request.Browser.IsMobileDevice)

   8:      {

   9:          return true;

  10:      }

  11:      //THEN TRY CHECKING FOR THE HTTP_X_WAP_PROFILE HEADER

  12:      if (context.Request.ServerVariables["HTTP_X_WAP_PROFILE"] != null)

  13:      {

  14:          return true;

  15:      }

  16:      //THEN TRY CHECKING THAT HTTP_ACCEPT EXISTS AND CONTAINS WAP

  17:      if (context.Request.ServerVariables["HTTP_ACCEPT"] != null &&

  18:          context.Request.ServerVariables["HTTP_ACCEPT"].ToLower().Contains("wap"))

  19:      {

  20:          return true;

  21:      }

  22:      //AND FINALLY CHECK THE HTTP_USER_AGENT 

  23:      //HEADER VARIABLE FOR ANY ONE OF THE FOLLOWING

  24:      if (context.Request.ServerVariables["HTTP_USER_AGENT"] != null)

  25:      {

  26:          //Create a list of all mobile types

  27:          String[] mobiles =

  28:              new String[]

  29:              {

  30:                  "midp", "j2me", "avant", "docomo", 

  31:                  "novarra", "palmos", "palmsource", 

  32:                  "240x320", "opwv", "chtml",

  33:                  "pda", "windows ce", "mmp/", 

  34:                  "blackberry", "mib/", "symbian", 

  35:                  "wireless", "nokia", "hand", "mobi",

  36:                  "phone", "cdm", "up.b", "audio", 

  37:                  "SIE-", "SEC-", "samsung", "HTC", 

  38:                  "mot-", "mitsu", "sagem", "sony"

  39:                  , "alcatel", "lg", "eric", "vx", 

  40:                  "NEC", "philips", "mmm", "xx", 

  41:                  "panasonic", "sharp", "wap", "sch",

  42:                  "rover", "pocket", "benq", "java", 

  43:                  "pt", "pg", "vox", "amoi", 

  44:                  "bird", "compal", "kg", "voda",

  45:                  "sany", "kdd", "dbt", "sendo", 

  46:                  "sgh", "gradi", "jb", "dddi", 

  47:                  "moto", "iphone"

  48:              };

  49:   

  50:          //Loop through each item in the list created above 

  51:          //and check if the header contains that text

  52:          foreach (string s in mobiles)

  53:          {

  54:              if (context.Request.ServerVariables["HTTP_USER_AGENT"].

  55:                              ToLower().Contains(s.ToLower()))

  56:              {

  57:                  return true;

  58:              }

  59:          }

  60:      }

  61:   

  62:      return false;

  63:  }