Check if request is coming from web browser or Mobile Browser

To Check the source of request call this method in page load function and if it return true then redirect it to mobile site.


public 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[]
{"iphone","midp", "j2me", "avant", "docomo","novarra", "palmos", "palmsource",
"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" };

//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;
}