Globally Handling Exceptions In Static Aspx [WebMethods]
Mar 16, 2011
The default behavior of a [WebMethod] attributed static method on an aspx page is to return the error to the caller. We are accessing these methods using json, and the only way we have found of capturing exceptions is either a try/catch in every webmethod on the site or using a javascript callback with the error (which has the unacceptable downside of exposing the error to the client).
Is there any way to globally handle these exceptions using the HealthMonitoring setup in ASP.NET?
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Similar Messages:
Dec 3, 2010
The intent is to create a set of web services that people can reuse. These services mostly interact with a backend DB creating, retreiving and processing data. We want to expose services so that people can use to create data mashups and other applications.End users are webpages that can be within our domain or outside our domain. For pages outside the domain we plan to release widgets that would be configured to retreive and display the data.
One requirement - application should be extremely scalable in terms of the number of users it can handle.Our code base is .net and we are looking at ASPX webmethods (or ASHX), ASMX webmethods and WCF (starting to read up on WCF). In terms of security/access I found that maintaining sessionid, memberships is doable in all three. WCF seems a bit complicated to setup. I could not immediately see the value of asmx when we can get all done just using a webmethod in aspx (with a little tweaking). Also, assuming that with the ASP.NET MVC2 I might be able to get clean urls as well for these webmethods.QuestionsWhich one will be the most effective in terms of performance and scalability? Any reason why I should choose WCF or ASMX?
EDIT I kind of understand that WCF is the way to go. Just to understand the evolution of the technologies it would be good if someone can throw light on why a aspx webmethod is different from an asmx when similar things (apart from discovery) can be accomplished by both. The aspx webmethods can be made to return data in other formats (plaintext, json). Also, it seems that we can build restful services using ashx.
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Dec 19, 2011
I have some code that is throwing unhandled DivideByZero exceptions in a WebMethod. These exceptions are not being caught by the global logging in Application_Error in global.asax. why exceptions thrown from a WebMethod are not handled by Application_Error?
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Feb 17, 2010
I'm verifying e-mail address using WebMethods, however, I'm getting a 404 not found (error console) saying that it can't find activities.aspx.aspx. I am using URL-Rewriting, but I tried adding a detect for 'activities.aspx.aspx' and redirect back to .activities.aspx' but it didn't do anything.
Here is the error:
[code]....
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Apr 4, 2011
I have a datasource that uses a business logic object for the select event. How can I catch an exception that occurs in the business logic layer and pass it to my presentation layer to display to the user in a label?
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Apr 22, 2010
What's the best way to handle exceptions that happen from within a controller's constructor?
All I can think of to do is use Application_OnError() or put a try/catch in my ControllerFactory.
Neither of these solutions seem ideal. Application_OnError is to broad - I have some non-mvc content in the site that has its own error handling. Using a try/catch block seems kinda hacky.
If I'm serving different content type -html/text/json/rss.... I would like to be able to handle the exception from within the action method instead of having to write all kinds of conditions to determine what kind of error message to serve.
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Nov 24, 2010
I have what is probably a basic question, but I am rather new to writing exception handling code. I thought I understood the concept, but apparently I don't, heres the code:
[Code]....
If I enter in any non-integer values, the textbox is set to nothing and the label displays the error message. However, now that I have verified the textbox contains an integer, I want to continue on and use that value. The remaining code works fine unless there was an exception, in which case the conversion to an int value for x throws an error.
All the examples I have looked at demos the structure of try-catch-finally, but in this instance I am not performing any clean up, I want to execute code when a valid value is entered into the textbox.
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Oct 9, 2010
I have error handling in Application_Error event of globals.asax file. Inside this event, I'm using Response.Redirect(~errorview.aspx) method, for redirection to site which is able to handle errors in user friendly way.
Everything works fine, unless exception is rising in Application_Start event. When error occurs there, my application gets trapped in infinite loop with the Application_Error method hit repeatedly. What is more, the page I'm redirecting to never gets hit. Changing Response.Redirect(~errorview.aspx) method to Response.Redirect(~errorview.aspx, false) changes nothing.
The good news is, when Response.Redirect(~errorview.aspx) has been replaced with Server.Transfer(~errorview.aspx), errorview.aspx page succesfully gets hit.
The side effect now is not loading CSS, and errorview.aspx page looks ugly. What is more, the CSS is not loaded only when exception occurs in Application_Start event. Exceptions thrown from any other place don't make the CSS mess.
How I can handle this problem in correct way, and why the CSS is missing in the one particular situation ? What is the appropriate way of handling errors in my case ?
UPDATE
For CSS loading, I'm using this:
<link href="~/Css/Layout/style.css" type="text/css" rel="stylesheet"
runat="server" ID="_uid" />
error page I'm transfering from: http://localhost/APP/Pages/Module/Pages/ErrorView.aspx
css folder path: http://localhost/APP/Pages/Module/CSS/Layout/style.css
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Nov 1, 2010
I have been tasked with implementing a strategy to catch all errors in an ASP.net application which cause a user request or interaction to crash and then e-mailk this exception to a support team in advance of a user calling about the error.Some errors however are not causing the page to crash or be redirected to the custom error page but these are being emailed to the support team instead of simply being loggedMy requirement is to seperate what exception types will cause a page fail and which will not.Example I am currently receiving a System.Web.HttpUnHandledException which is not causing any page to fall over and therefore is not of relevance to the support team. this can be logged but does not require emailing.
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Jul 19, 2010
I have custom errors set in the web config file as follows:
<customErrors mode="RemoteOnly" defaultRedirect="GenericError.aspx" />
Fine and dandy... I like that mode="RemoteOnly" facilitates development...
For unhandled exceptions, I have in global.asax:
Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)
Response.Redirect("GenericError.aspx")
End Sub
However, unhandled exceptions are going to the generic error page instead of the informative yellow screen of death preferred by developers. I can comment out the redirect in global.asax, but then I need to remember to change it for the production environment. Is there a way I can check in Application_Error whether I am remote or not to determine whether to redirect?
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Jan 26, 2010
I had a look through some of the older questions, but I can't find anything.I have a Wildcard HttpHandler on my web app which is processing the url and working out if it can do anything with itIf it can't, then the StaticFile Handler should pick it up and just serve it as a static file (like an html file).The problem is, it's going through the Wildcard handler, then seemingly not going to the StaticFileHander. Is there something I need to do to the Wildcard handler, or in the web config?This is my web.config:
<add name="Wildcard" path="*" verb="*" type="Rewriter.RewriterHttpModule"
modules="IsapiModule" requireAccess="None" allowPathInfo="false"
preCondition="" responseBufferLimit="4194304" />
<add name="StaticFile" path="*.*" verb="*"
modules="StaticFileModule,DefaultDocumentModule,DirectoryListingModule"
scriptProcessor="%windir%Microsoft.NETFrameworkv2.0.50727aspnet_isapi.dll"
resourceType="File" requireAccess="Read" allowPathInfo="false" preCondition=""
responseBufferLimit="4194304" />
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Jan 26, 2010
I'm building the standard 3-tier ASP.NET web application but I'm struggling as to where to do certain things - specifically handling exceptions.
I've tried to have a look around on the web for some examples but can't find any which go as far as a whole project showing how everything links together.
In my data-tier I'm connecting to SQL Server and doing some stuff. I know I need to catch exceptions that could be raised as a result but I'm not sure where to do it.
From what I've read I should be doing it in the UI tier but in that case I'm not sure how to ensure that the connection to the database is closed. Is anyone able to clarify how to do this? Also if anyone knows as to where I could find an example 3-tier web application that follows best practices that would be great too.
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Dec 9, 2010
We have a asp.net application and want to implement logging. The first idea was to use the Application_Error method in the global.asax file.
The problem is that ASP.NET very often seem to throw exceptions internally that are not caused by the application and which seem not to interfer with the users normal workflow. For example we often get HTTPExceptions, UnauthorizedAccessExceptions and others caught in this method, although there is no real error in the application.
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May 22, 2010
I want my site visitors to be able to navigate to a page without having to type the .aspx extension. For example, if I have a page file named info.aspx I want site visitors to be able to go to that page with a URL like this: www.mysite.com/info without the aspx extension. Is there a way to do this in the web.config file?
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Jan 13, 2010
I have one aspx page and more than ascx files, i have links on aspx page. if i click one of the link, it will upload the relevant ascx file on main aspx file.
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Mar 23, 2011
Can I put public static int[] MyArrayCounter declared in separate class Main.cs into webpage Default.aspx between code tags <%= %>?
More info of what i do:
I have declaration in Main.cs:
[Code]....
In class Checking.cs i fill MyArrayCounter with 29 values. After code execution ends, i'd like my Default.aspx page to bind to that MyArrayCounter values like:
Label1.Text = MyArrayCounter[0]
Label2.Text = MyArrayCounter[1]
etc.
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Apr 4, 2011
Possible Duplicate: Where are static variables stored in asp.net aspx page Hi can someone please tell me where the static variables are stored in asp.net aspx page.Is it in the view state? If so I guess you wouldn't want to stored big complex objects?
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Jan 28, 2010
I am on .aspx page and i want to take the width and height of a control from a static class
where i have defined them as constans.
Is there any way to access that class directly from the aspx page?
I know that i can make a method like:
width="<%= getWidthSize() %>"
and inside the aspx.cs to define this method to take the size from that static class.
But i am asking if this could be directly managed from the web aspx page...?
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Apr 4, 2011
where the static variables are stored in asp.net aspx page.Is it in the view state? If so I guess you wouldn't want to stored big complex objects?
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Feb 13, 2011
i declared a static variable in global.asax file like below
<%@ Application Language="C#" %>
<script runat="server">
static string Sv;
void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
}
i want to access this variable in aspx page. how can i access this variable.
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Jan 20, 2011
how do i globally change the asp button css, that support all browser?
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Apr 15, 2010
I'm tired of including
EnableViewStateMac="false"
in every page. How to do that globally?
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Jan 3, 2011
i have quite big ASP.NET MVC 2 application (multiple areas, each with own routing registration) using routes like this :
/Item/12345/Detail - where 12345 is the ID of the item. The whole application just rely on that numeric IDs. But now there is an requirement (seo stuff) to make URLs look like this :
/Item/item-unique-string-name/Detail
I would love to handle this globally in some high level - for example load numeric ID before route evaluation and "replace" it in route data. But i am not sure what is the right spot for such a hack - custom MvcHandler, custom IRouteHandler, somewhere else ?
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Mar 30, 2011
In each projects we have several pages which have the following tag
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
Now we would like to change those to (about 80% of Pages)
<asp:ScriptManager ID="ScriptManager1" EnableScriptGlobalization="true" EnableScriptLocalization="true" runat="server">
</asp:ScriptManager>
Is there any way to do that from a single source like Web.config or Global.asax or using any HTTPHandler.
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Dec 5, 2010
calling a SAP Webmethod using ASP.NET application.
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