SubmitActionHandler - MVC multiple submit buttons.

SubmitActionHandler.cs

namespace derek.kowald.MVC
{
	using System;
	using System.Web;
	using System.Web.Mvc;
	using System.Web.Routing;
	
	/// <summary>
	/// Custom route handler so a form submit button can 
	/// define the mvc action to take.
	/// </summary>
	/// <remarks>
	/// Be careful to only define submit buttons with the name action.
	/// </remarks>
	/// <example>
	/// Update your routes to use this hander:
	/// routes.MapRoute("Default",
	///   "{controller}/{action}/{id}",
	///   new { controller = "Home", action="Index", id = UrlParameter.Optional})
	///       .RouteHandler = new SubmitActionHandler();
	///
	///  Update your markup so sumbit button(s) have the name action:
	///  &lt;input type='submit' name='action' value='MyAction' /&gt;
	/// </example>
	public class SubmitActionHandler : IRouteHandler
	{
		#region IRouteHandler Members
		/// <summary>
		/// If an input parameter named 'action' is provided,
		/// update the RouteData action property with the form data.
		/// </summary>
		public IHttpHandler GetHttpHandler(RequestContext requestContext)
		{
			string reqAction = null;
			if (requestContext.HttpContext != null &&
				requestContext.HttpContext.Request != null)
			{
				reqAction = requestContext.HttpContext.Request["action"];
			}

			if (!String.IsNullOrEmpty(reqAction))
			{
				requestContext.RouteData.Values["action"] = reqAction;
			}

			return new MvcHandler(requestContext);
		}
		#endregion
	}
}