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POWhy are ASP.NET MVC 3 exceptions being 'handled' twice?
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  1. POWhy are ASP.NET MVC 3 exceptions being 'handled' twice?
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    copied!<p>I have implemented exception handling using below code.[Edited Start] I do not know why it is calling view twice. [Edited Done]</p> <p>Basecontroller</p> <pre><code>public class BaseController : Controller { protected override void OnException(ExceptionContext filterContext) { if (filterContext.HttpContext.IsCustomErrorEnabled) { filterContext.ExceptionHandled = true; if (filterContext.Exception.GetType() == typeof(ArgumentOutOfRangeException)) { this.View("OutOfRange").ExecuteResult(this.ControllerContext); } else { this.View("Error").ExecuteResult(this.ControllerContext); } } base.OnException(filterContext); } } </code></pre> <p>HomeController</p> <pre><code>public class HomeController : BaseController { public ActionResult Exception2() { throw (new ArgumentOutOfRangeException()); } public ActionResult Exception3() { throw (new Exception()); } } </code></pre> <p>Error View (Shared folder only)</p> <pre><code>@model System.Web.Mvc.HandleErrorInfo @{ Layout = null; } &lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;Error&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;h2&gt; Sorry, an error occurred while processing your request. &lt;/h2&gt; &lt;h3&gt; @if (Model != null) { &lt;p&gt;@Model.Exception.GetType().Name&lt;br /&gt; thrown in @Model.ControllerName @Model.ActionName&lt;/p&gt; &lt;br /&gt; @Model.Exception } &lt;/h3&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>OutOfRange view (Shared folder only)</p> <pre><code>@{ Layout = null; } &lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;OutOfRange Exception&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;div&gt; &lt;h3&gt; @if (Model != null) { &lt;p&gt;@Model.Exception.GetType().Name&lt;br /&gt; thrown in @Model.ControllerName @Model.ActionName&lt;/p&gt; &lt;br /&gt; @Model.Exception } &lt;/h3&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Execution URL : <code>http://[domainName]/Home/Exception2</code></p> <p>Here it is working fine. [EDITED : Here it also call twice.]</p> <p><img src="https://i.stack.imgur.com/tQ2dj.png" alt="enter image description here"></p> <p>Execution URL : <code>http://[domainName]/Home/Exception3</code></p> <p><strong>Here it is not working fine. You can see that "Sorry, an error occurred while processing your request." is coming twice. When I debugged the application using above URL, Error view called twice ( First time Model is null and second time Model contains some value). May I know what is wrong with my implementation?</strong> <img src="https://i.stack.imgur.com/ZVb2Z.png" alt="enter image description here"></p>
 

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