How to detect a mobile browser in ASP.NET


I’ve been having this issue with mobile development for quite sometime that I couldn’t get the mobile browser accurately by just using the Request.Browser.isMobileDevice property and I’ve found this piece of code here

Looks pretty useful.


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”,
“240×320”, “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;
}

Author: Imran Akram

A .NET/SharePoint Consultant and a political enthusiast who believes in putting the feet of the elected and/or unelected officials to fire in order to get good governance.

3 thoughts on “How to detect a mobile browser in ASP.NET”

  1. Hi,

    My browser string is as below :
    Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.5.21022; .NET CLR 3.5.30729; OfficeLiveConnector.1.3; OfficeLivePatch.0.0; .NET CLR 3.0.30729)

    According to your script, it is matching “NEC” in OfficeLiveConnector so I am not able to match it perfectly.

    Pls. help

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