MVC :: HandleErrorInfo Is Null On Custom Error Page
Apr 13, 2010
I have implemented a custom ErrorController with UnknownError Action returning the View "~/Error/UnknownError" (not inside the Shared folder).
I have also modified the web.config file and add in custom errors section the following[Code]....
Inside the UknonwnError page i would like to display some information concerning the error occured using the HandleErrorInfo.
To test the error handling mechanism, i throw a custom ApplicationEcxeption from my Home/About controller action that is handled via the HandleErrorAttribute on the controller level.
The result is to get another unhandled exception thrown from the UknownError page due to the fact that HandleErrorInfo model is null.
I have a control that renders different children according to a property value. All works great until I add a rating control in the mix. I get the following:
Page cannot be null. ensure that this operation is being performed in the context of an ASP.NET request.
So I finally managed to create a control which basically shows a bunch of Panels with an extra property. I use it like this:
[Code]....
This renders fine and shows the text in the TabPanel controls. However, when I replace the plain text with something a little more exciting, say an UpdatePanel so it looks like this:
[Code]....
Then I get this weird error:
Page cannot be null. ensure that this operation is being performed in the context of an ASP.NET request.[InvalidOperationException: Page cannot be null. ensure that this operation is being performed in the context of an ASP.NET request.] System.Web.UI.UpdatePanel.get_IPage() +647672 System.Web.UI.UpdatePanel.Render(HtmlTextWriter writer) +20 SP.adminonly_reports_loginreport_aspx.__RenderTabPanel1(HtmlTextWriter __w, Control parameterContainer) in D:....eport.aspx:37 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +115 System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +13 System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +42 TabPanels.TabPanelHolder.Render(HtmlTextWriter w) in D:e4Webwwwrootlms_workingTabPanelsTabPanelsTabPanelHolder.vb:146 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +253 System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +87 System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +53 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +240 System.Web.UI.Page.Render(HtmlTextWriter writer) +38 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4240
If I take out the UpdatePanel and replace it with an ASCX control I made that simply puts database data into some DropDownLists, like this...
[Code]....
Then the page loads, but the data is not loaded into CustomerUserList1, and the dropdownlists within it are all blank. CustomerUserList1 has worked fine for years when used directly in a normal Panel/Page UpdatePanel.
I am showing Custom Error in my page.if somehting happend wrong. but if the same error occured in my subview master page I am not able to show the Custom error page on Entire page its showing me that Error page under subview master page.I am attching the Screen shot.Can any body help me out how to show the Error page on entire page if something happend in any where submaster or other page.Here is the code that I am using in web config file to show custom Error page..
[CODE]...
Here I know the issue what's going on.This issue is occurring because i am using AJAX to partially load the contents of the tabs after the initial page load so the error is occurring AFTER my master page has been loaded.What I need to do is provide a javascript function to handle the error after the ajax call has returned and redirect to the error page.How to write this Javascript and where Do I need to write this?
Here's my Application_OnError event sink in global.asax.vb:
Sub Application_OnError(ByVal sender As Object, ByVal e As EventArgs) Dim innerMostException As Exception = getInnerMostException(Me.Context.Error) If TypeOf innerMostException Is AccessDeniedException Then Security.LogAccessDeniedOccurrence(DirectCast(innerMostException, AccessDeniedException)) Dim fourOhThree As Integer = DirectCast(HttpStatusCode.Forbidden, Integer) Throw New HttpException(fourOhThree, innerMostException.Message, innerMostException) End If End Sub
You'll see that if we've got an innermost Exception of type AccessDeniedException we throw a new HTTPExcpetion with a status code of 403 AKA 'forbidden'
So what we're expecting is a redirect to the AccessDenied.aspx page. What we get is a redirect to the ServerError.aspx page.
We've also tried this:
Sub Application_OnError(ByVal sender As Object, ByVal e As EventArgs) Dim innerMostException As Exception = getInnerMostException(Me.Context.Error) If TypeOf innerMostException Is AccessDeniedException Then Security.LogAccessDeniedOccurrence(DirectCast(innerMostException, AccessDeniedException)) Context.Response.StatusCode = DirectCast(HttpStatusCode.Forbidden, Integer) End If End Sub
I'm having a wicked time trying to redirect the different error scenarios to a custom error page. Basically, I have put some code in Application_Error in global.asax, and done the necessary web.config settings to use Custom Errors.
In global.asax on Application_Error, I stored the Server.GetLastError in Session. The reason I have to store it in Session is because (as far as I know) you lose the exception when using "ResponseRedirect". And the reason I have to use ResponseRedirect is because I am using an UpdatePanel with AJAX calls, and any exception during the AJAX call shows up as a JavaScript error, and doesn't get handled using the custom error page (see this post).
void Application_Error(object sender, EventArgs e){ ////must perform this check to avoid the "Session state is not available in this context" errors if (HttpContext.Current.Session != null) { Session["LastException"] = Server.GetLastError(); } else { // (I think this happens when there are compile-time errors) Server.Transfer("~/Oops.aspx"); }}void Session_Start(object sender, EventArgs e){ //must perform this check to avoid the "Session state is not available in this context" errors if (HttpContext.Current.Session != null) { //initialize the session (http://forums.asp.net/t/1405077.aspx) Session["LastException"] = ""; }}
I am trying to handle the unhandled exceptions in my project.I tried with this following code in my web.config filebut it is not at all redirecting to an error page which i have created instead of that it is throwing an exception in my code itselef. How to print the error description over therein my custom error page.
I need to send a Customized Error page for 503 Errors produced by my asp.net website. I have tried to simulate the condition by switching off the application pool (doesn't work) and by flooding my application with requests. Even though IIS sends me the default 503 error page, and even though I have tried setting a Custom URL in IIS and ASP.NET for this error code, it still returns me the default 503 error page.
I am using a custom error page in IIS 6:<customErrors redirectMode="ResponseRedirect" mode="On" defaultRedirect="Error2.aspx"/>I want to disable authentication for the custom error page because the error being raised is related to an authentication module and I don't want to get into an infinite loop and I want to display a clean error page to the user. I have been trying the following configuration to do that.
I am showing Custom Error in my page.. if somehting happend wrong. but if the same error occured in my subview master page I am not able to show the Custom error page on Entire page its showing me that Error page under subview master page. Please I am attaching the Screen shot. how to show the Error page on entire page if something happend in any where submaster or other page.. Here is the code that I am using in web config file to show custom Error page..
master page I have all the js files and Css files links and I have submaster page for mainmaster page.. sub master page have three tabs each tab has grid control.if something went wrong I can able to show the Custom Error page but its showing me in submaster page.. not in main master page.....but if something hapend any where I need to show CustoM Error page in main master page..
In the OnLoad(EventArgs e) event -- I'm trying to do this, but it appears to be too late.this.txtReferrer.Text = Request.UrlReferrer.ToString();Is it possible to capture the referrer url?
I've a got an Asp.Net site that is using Forms authentication, I've also got custom errors configured in the web.config. One of these is a special error page for 403's (access denied). My question is how do I get Forms authentication to work smarter?
I would like Forms authentication to send users to login page only if they are not authenticated. If they are I want it to defer to the custom error pages that i've defined in the web.config. This seems like something very basic, how can this be achieved?
I decided to use the CalendarExtender on a project and I converted it from VS 2005 to Web Developer 2010 Express. I initially added the AJAX toolkit for ASP.NET 4.0 and the calendar extender worked fine. However, I realised that the server didn't have ASP.NET 4.0 installed and I thought it would be simpler to add the toolkit for 3.5 instead and change the target framework to 3.5. I tried and then the CalendarExtender did't work at all. When you click the textbox nothing happens. There is the error on page - 'sys.extended.ui.textboxwrapper is null or not an object'
I tried switching the project back to 4.0 and using the other one and that no longer works for some reason. The same in 2008 Web Developer Express. I've clearly done something wrong along the way, but I can't work out what it is.
Here's the source for a page on a test Web Developer 2008 Express project.
Basically I want to take the following:And make it match the styling of the rest of the application.I am creating a custom error page in my C# based project and I want it to be able to show the same information that is displayed in the ASP.NET default error page. From fiddling with reflector I can see that this is generated through HttpException.GetHtmlErrorMessage() but when I try to use this in my exception it returns null.
As my app gets deployed on diff servers so I have to display the Top banner on the error page depending upon which server it is on.Can I customize the customerror page?
I am trying to create a 404 error page and currently I have all of the following/tried all of the following to try and accomplish this. When the user types in :
http://name/something.aspx
It works just as its supposed to. But if the user types in:
http://name/NotAFile
with no .aspx then IIS7 takes matters into its own hands and I get the lovely error page that IIS7 comes with. The goal is that the site redirects with only a 404 status code (so not a 200, or a 302 redirect). I have tried in both the web config with:
Now my question: If I replace, say 404.aspx with AnyHTTP.aspx, and want to get the number of the http error to generalize the page, how do I get that error numer?
That's in my web.config.I'm still getting this though and it's not loading my error .htm page:Server Error in '/' Application.Runtime Error,Description: An application error occurred on the server.The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons).It could, however,be viewed by browsers running on the local server machine.
Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".
Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application's <customErrors> configuration tag to point to a custom error page URL.
I have inherited the an asp.net app. So i want to add the custom Error Handling. I know there are two methods i can do this.
1) Web Config 2)Global.asa
So i started with the web config just to see how it will look and i accessed the page that normally gives an Exception. so basically i have a page gives a
500 - Internal server error. There is a problem with the resource you are looking for, and it cannot be displayed.
So now , if there is an Error i want it to go to that Error Page. In the web config i have the Following
This means that when this kind of Errors occur it should redirect to that page. All these pages are contents of the Master page including the Error page. But this Error Persist it does not show me the Error page. Even if i try to see if it goes to "Application_Error" in the Global.asa nothing goes there.
So i have also tried the second option. so i turned the web config part "off" and i trapped this in the global.asa like this
Code: Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs) Server.Transfer("~/Content/ErrorPages/SupportError.aspx") 'Response.Redirect("~/Content/ErrorPages/SupportError.aspx", False) End Sub
This works fine locally. A 404 throws a 404. On the shared hosting it throws up the standard server 404 page unless I specifically set 404 to point to /Error/NotFound. That's fine. Now it will show the custom 404 page except the response status code is 200. So if I try to throw Response.StatusCode = 404; in my NotFound action in ErrorController like this:
Csharp Code:
[code]....
the server throws a status code 500 Internal Server Error but my GeneralError page doesn't show, just a blank white page with no source.
I've tried many different combinations but I can't seem to find how to make it show my custom 404 page along with a 404 response.
