HttpRequest.UserLanguages Property

The following code example captures the multiple values returned by the UserLanguages property into a string array and writes each language name to a separate line of HTTP output.

The language names are provided by the browser, and there is no definitive list of all possible codes. Typically these consist of a two-character codes for the language, a hyphen, and a two-character code for the culture, such as "en-us" for U.S. English and "fr-ca" for Canadian French.

int count;
String[] userLang = Request.UserLanguages;    

for (count = 0; count < userLang.Length; count++) 
{
   Response.Write("User Language " + count +": " + userLang[count] + "<br>");
}