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Browser Detection using ASP.NET

, 6 May 2009
Using and updating your machine.config file to better detect browser type in ASP.NET
/*
Used to determine Browser Capabilities by the Browsers UserAgent string.
Copyright (C) 2002-Present  Owen Brady (Ocean at xvision.com)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
using System;
using System.Text.RegularExpressions;

namespace Ocean.Web.HttpCapabilities
{
	/// <summary>
	/// this class main purpose is just to allow me to see what went into making a regular expression
	/// so to make it easier to debug said expression.
	/// </summary>
	public class CaseFilter
	{
		/// <summary>
		/// This is the regular expression pattern.
		/// </summary>
		private string Pattern;
		/// <summary>
		/// This is the raw string expression which is being processed.
		/// </summary>
		private string Input;
		/// <summary>
		/// This is the resulting regular expresion Match object, when the given pattern & input are used.
		/// </summary>
		private System.Text.RegularExpressions.Match regxmatch;

		/// <summary>
		/// 
		/// </summary>
		/// <param name="pattern"></param>
		/// <param name="input"></param>
		public CaseFilter(string pattern, string input)
		{
			System.Diagnostics.Trace.WriteLine(String.Format("Pattern:{0}\tInput:{1}",pattern,input));
			Pattern= pattern;
			Input = input;
			regxmatch = System.Text.RegularExpressions.Regex.Match(Input,Pattern);
		}
		/// <summary>
		/// Used to take a formated text template and process it though the regular expression
		/// matches to replace the scripted items with the values in the regular expession matches.
		/// </summary>
		/// <param name="template">Formated text used to return the desired result</param>
		/// <returns>Converted template with the values from the regular expression replacing the template varables</returns>
		public string Result(string template)
		{
			if (this.Success==true)
			{
				return regxmatch.Result(template);
			}
			return string.Empty;
		}
		/// <summary>
		/// Returns weather the Regular expression found a match or not.
		/// </summary>
		public bool Success
		{
			get
			{
				return regxmatch.Success;
			}
		}
		/// <summary>
		/// The number of groups matched.
		/// </summary>
		public int CountGroups
		{
			get
			{
				return	regxmatch.Groups.Count;
			}
		}
	}
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Chris Maunder
Founder CodeProject
Canada Canada
Chris is the Co-founder, Administrator, Architect, Chief Editor and Shameless Hack who wrote and runs The Code Project. He's been programming since 1988 while pretending to be, in various guises, an astrophysicist, mathematician, physicist, hydrologist, geomorphologist, defence intelligence researcher and then, when all that got a bit rough on the nerves, a web developer. He is a Microsoft Visual C++ MVP both globally and for Canada locally.
 
His programming experience includes C/C++, C#, SQL, MFC, ASP, ASP.NET, and far, far too much FORTRAN. He has worked on PocketPCs, AIX mainframes, Sun workstations, and a CRAY YMP C90 behemoth but finds notebooks take up less desk space.
 
He dodges, he weaves, and he never gets enough sleep. He is kind to small animals.
 
Chris was born and bred in Australia but splits his time between Toronto and Melbourne, depending on the weather. For relaxation he is into road cycling, snowboarding, rock climbing, and storm chasing.
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