Developing web application for mobile phones using .NET

  
 public static bool isMobileBrowser()
 {
   //GETS THE CURRENT USER CONTEXT
    HttpContext context = HttpContext.Current;
 
   //FIRST TRY BUILT IN ASP.NT CHECK
   if (context.Request.Browser.IsMobileDevice)
   {
       return true;
   }
   //THEN TRY CHECKING FOR THE HTTP_X_WAP_PROFILE HEADER
  if (context.Request.ServerVariables["HTTP_X_WAP_PROFILE"] != null)
  {
      return true;
  }
  //THEN TRY CHECKING THAT HTTP_ACCEPT EXISTS AND CONTAINS WAP
  if (context.Request.ServerVariables["HTTP_ACCEPT"] != null &&
      context.Request.ServerVariables["HTTP_ACCEPT"].ToLower().Contains("wap"))
  {
      return true;
  }
  //AND FINALLY CHECK THE HTTP_USER_AGENT
  //HEADER VARIABLE FOR ANY ONE OF THE FOLLOWING
  if (context.Request.ServerVariables["HTTP_USER_AGENT"] != null)
  {
      //Create a list of all mobile types
      string[] mobiles =
          new[]
              {
                  "midp", "j2me", "avant", "docomo",
                  "novarra", "palmos", "palmsource",
                  "240x320", "opwv", "chtml",
                  "pda", "windows ce", "mmp/",
                  "blackberry", "mib/", "symbian",
                  "wireless", "nokia", "hand", "mobi",
                  "phone", "cdm", "up.b", "audio",
                  "SIE-", "SEC-", "samsung", "HTC",
                  "mot-", "mitsu", "sagem", "sony"
                  , "alcatel", "lg", "eric", "vx",
                  "NEC", "philips", "mmm", "xx",
                  "panasonic", "sharp", "wap", "sch",
                  "rover", "pocket", "benq", "java",
                  "pt", "pg", "vox", "amoi",
                  "bird", "compal", "kg", "voda",
                  "sany", "kdd", "dbt", "sendo",
                  "sgh", "gradi", "jb", "dddi",
                  "moto", "iphone"
              };
 
      //Loop through each item in the list created above
      //and check if the header contains that text
      foreach (string s in mobiles)
      {
          if (context.Request.ServerVariables["HTTP_USER_AGENT"].
                                              ToLower().Contains(s.ToLower()))
          {
              return true;
          }
      }
  }
 
  return false;
  }