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POMessage Popup Mvc3 with PostSharp OnException handling issue
 

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  1. POMessage Popup Mvc3 with PostSharp OnException handling issue
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    <ol> <li>I have some trouble with returning the message popup in mvc3 when some exception is thrown . </li> <li>I'm using PostSharp as a global AOP framework to catch the exceptions and handle them building the text of the popup . </li> <li>I've extended the ActionResult to custom object that in ExecuteResult implements the RenderViewToString method that creates the right html code for the messagePopup. </li> <li>The MessagePopup is shown on the page but the Action continues to perform itself.</li> </ol> <p><strong>How can i stop it from continuing to perform itself ?</strong></p> <p>When it fails I catch it globally at the</p> <pre><code>namespace Aop { /// &lt;summary&gt; /// Handles Aspect Object Programming in all the projects . /// The attribute is being injected through Shared AssemblyInfo.cs to all the /// relevant Assemblies in the project. /// The code of the class is being added to project in compilation time /// and by that improves the response time quality /// &lt;/summary&gt; [Serializable] [AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Method | AttributeTargets.Constructor, AllowMultiple = true, Inherited = false)] [MulticastAttributeUsage(MulticastTargets.Method, AllowMultiple = true, AllowExternalAssemblies = true)] public sealed class TraceAttribute : OnMethodBoundaryAspect { [Inject] public IReportBLImpl _reportBL { get; set; } public TraceAttribute() { } #region Runtime semantics /// &lt;summary&gt; /// Handles all exception in all the project Ness.DoarKamuti exceptions /// &lt;/summary&gt; /// &lt;param name="eventArgs"&gt;&lt;/param&gt; public override void OnException(MethodExecutionEventArgs eventArgs) { … DefActionResult res = DefActionResult.Create("~/Views/Shared/MessagePopup.ascx",_report , DefConstants.MessageDesign.PopUp, "messagePopupBody"); eventArgs.ReturnValue = res; } } </code></pre> <p>Than it’s building the ActionResult of mine , after handling the message content</p> <p>public class DefActionResult : ActionResult {</p> <pre><code> public override void ExecuteResult(ControllerContext context) { DefJsonResult model = this.ActionModel; /* If a view name has been specified, render it */ if (!string.IsNullOrEmpty(model.ViewName)) model.ViewHTML = controller.RenderViewToString(model.ViewName, model.ViewModel); JsonResult res = new JsonResult() { Data = model, JsonRequestBehavior = JsonRequestBehavior.AllowGet }; res.ExecuteResult(context); } } </code></pre> <p>Then I’m building the response </p> <pre><code>public static class MVCExtensions { public static string RenderViewToString(this Controller controller, string viewName, object viewData) { //Create memory writer var sb = new StringBuilder(); var memWriter = new StringWriter(sb); //Create fake http context to render the view var fakeResponse = new HttpResponse(memWriter); var fakeContext = new HttpContext(HttpContext.Current.Request, fakeResponse); var fakeControllerContext = new ControllerContext( new HttpContextWrapper(fakeContext), controller.ControllerContext.RouteData, controller.ControllerContext.Controller); var oldContext = HttpContext.Current; HttpContext.Current = fakeContext; //Use HtmlHelper to render partial view to fake context var html = new HtmlHelper(new ViewContext(fakeControllerContext, new FakeView(), controller.ViewData, controller.TempData, memWriter), new ViewPage()); html.ViewDataContainer.ViewData = controller.ViewData; html.RenderPartial(viewName, viewData); //Restore context //HttpContext.Current = oldContext; //Flush memory and return output memWriter.Flush(); return sb.ToString(); } </code></pre> <p>After returning my Message Popup as it should , it continues to the original action as if it didn't crush , and of course crushing because the data source is not initialized .</p> <p>I don’t want to handle the errors with the HandleErrorAttribute because it’s not as dynamic as PostSharp . </p> <p><strong>How can I stop the remains of the original Request ?</strong> (A remark , I am using the Telerik grid for mvc to show the data .)</p>
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