XlsReturnBinderAttribute.cs

using System;
using Castle.MonoRail.Framework;
using System.Xml.Serialization;

namespace Ris.Operations.Oats.Presentation.Attributes
{
    [AttributeUsage(AttributeTargets.ReturnValue, AllowMultiple = false, Inherited = false)]
    public class XlsReturnBinderAttribute : Attribute, IReturnBinder
    {
        private IEngineContext engineContext;
        private IControllerContext controllerContext;
        private Type returnType;
        private object returnValue;

        public void Bind(IEngineContext engineContext, IController controller,
            IControllerContext controllerContext, Type returnType, object returnValue)
        {
            this.returnValue       = returnValue;
            this.returnType        = returnType;
            this.controllerContext = controllerContext;
            this.engineContext     = engineContext;

            ProcessResponse();
        }

        private void ProcessResponse()
        {
            ModifyControllerContext();
            RenderXls();
            CancelRenderView();
            SetContentType();
        }

        private void RenderXls()
        {
            var serializer = new XmlSerializer(returnType);
            serializer.Serialize(engineContext.Response.OutputStream, returnValue);
        }

        private void ModifyControllerContext()
        {
            controllerContext.LayoutNames = null;
        }

        private void CancelRenderView()
        {
            controllerContext.SelectedViewName = null;
        }

        private void SetContentType()
        {
            engineContext.Response.ContentType = "application/xls";
            engineContext.Response.AppendHeader("Content-Disposition", "inline; filename=\"download.xls\"");
        }

    }
}