You can get the name of the browser using Request.Browser.Browser. A Request.Browserlot more could also appear in a class :
var browserName = Request.Browser.Browser;
var browserType = Request.Browser.Type;
var browserMajor = Request.Browser.MajorVersion;
var browserMinor = Request.Browser.MinorVersion;
var supportsActiveX = Request.Browser.ActiveXControls;
var inputType = Request.Browser.InputType;
var supportsColours = Request.Browser.IsColor;
var isMobileDevice = Request.Browser.IsMobileDevice;
var supportsJavaApplets = Request.Browser.JavaApplets;
var ...
ASP.Net - , . , JS URL, :
var resolution = screen.width + ' x ' + screen.height;
hiddenField.value = resolution;