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Web Part Error Handling

protected new virtual void Render(HtmlTextWriter writer) { base.RenderWebPart(writer); } protected new virtual void CreateChildControls() { base.CreateWebPartChildControls(); } protected new virtual void OnInit(EventArgs e) { base.InitWebPart(e); } protected new virtual void OnLoad(EventArgs This will maintain a good inventory of what the hell is going on with your WebPart. Obviously for some remedial event handling, it doesn't make utter sense to use this approach, so I just go the standard route of: C# < view plain text > catch (Exception Here is an example: C# < view plain text > public class testLogging { static testLogging() { GenericExceptionHandler.StartLogging(); } } Then in order to teardown logging, you can combine what http://txtbl.com/web-part/web-part-error-invalid-web-part-tag.html

But in my personal opinion, you are partly right when saying the page should not "blow up" when only one area causes an error. Simply append contents=1 as a query string to the page URL. Since I checked here last he has linked in another article from an MVP. How do I call this class you ask Batman? http://sharepoint.stackexchange.com/questions/4420/sharepoint-development-in-c-best-way-to-deal-with-error-handling

As for handling of exceptions I think the Patterns and Practices group have advice on how to render errors in webparts, and you could also use System.Trace.Write for writing debug data That way, if I have a web part that breaks, I show a nice error message to the user in that specific web part, rather than at the top of the Why is the FBI making such a big deal out Hillary Clinton's private email server? I will even sometimes wrap my generic C# code in try/catch blocks if there is complicated logic that is implemented (and I haven't been able to test all the different cases).

Integer function which takes every value infinitely often Why are only passwords hashed? All rights reserved.Newsletter|Contact Us|Privacy Statement|Terms of Use|Trademarks|Site Feedback TechNet Products IT Resources Downloads Training Support Products Windows Windows Server System Center Browser   Office Office 365 Exchange Server   SQL Server Why can't the second fundamental theorem of calculus be proved in just two lines? C# < view plain text > catch (myGreatException exception) { GenericExceptionHandler.WriteLine(TraceLevel.Error, "I am doing something" + exception.ToString(), "YourClassName"); } One of the things that I like to use about this class

The idea is to retrieve an SPLimitedWebPartManager object for the malfunctioning page and use it to delete the web part: $web = get-spweb "http://sp2010/subsite" $mgr = $web.GetLimitedWebPartManager("pages/default.aspx", [System.Web.UI.WebControls.WebParts.PersonalizationScope]::Shared) # Display the how to handle the exception in my webpart? Microsoft Customer Support Microsoft Community Forums Dev Center Explore Why Office? TraceSwitch - This is pretty important.

The exception handling is thus /// transparent to the inheritor. /// public abstract class BaseWebPart : ExceptionHandlingWebPartBase { #region temp methods for method piping (overrides and seals methods from ExceptionHandlingWebPartBase) The code should catch all possible exceptions.This does seemed cleaner, but I was wondering if this is worth the effort. current community chat SharePoint SharePoint Meta your communities Sign up or log in to customize your list. Solutions?

When I know a specific error can arise, I'm using a more specific exception on the place where it's most usefull. C# < view plain text > using System; namespace arb.Generic.SharedLibrary.exceptionHandling { internal class myGreatException : ApplicationException { internal myGreatException() { } internal myGreatException(string message) : base(message) { } If you don't care about the little tidbits on how to use it, since it is pretty straightforward and you can just infer the functionality from the code, just scroll to Since these types of issues occur with unhandled exceptions in managed code, there might be a log entry that will point you in the right direction.

You mention performance, and its true that there is a small performance penalty involved when doing try/catch blocks, but as long as you dont nest them (boy have i seen that, this content It doesn't make sense in every situation, but it helps immensely in others. Posted in: general Comments are closed. I then don't know which one to investigate or close.

So the purpose of this article is to start somekind of discussion and share if someone has anything better. Please contact tech support" whenever a unhandled exception occur. catch (Exception ex)   {       this.Controls.Clear();       this.Controls.Add(new LiteralControl(ex.Message));   }    Randy - http://sharepointhawaii.com/randywilliams Thursday, October 23, 2008 7:38 PM Reply | Quote 1 Sign in to vote What the architect meant http://txtbl.com/web-part/web-part-error.html I'd say that you'd have the best chance by inspecting the log files.

Consider a web part with the following code: [ToolboxItemAttribute(false)] public class MyWebPart : WebPart { protected override void OnLoad(EventArgs e) { Page.Response.Redirect("AnotherPage.aspx"); } } And here is the result when you For the rest…. Here its important to not to specify a variable, or the error will be cast as such an error : try { // normal logic } catch (ArgumentException ex) // dont

There is actually a little more to it, but that is the basic rule of thumb.

If you open an SPWeb or SPList using the Open method you need to dispose of it. This would look like: C# < view plain text > if (GenericExceptionHandler.TraceLevel == TraceLevel.Verbose) { GenericExceptionHandler.WriteLine(TraceLevel.Verbose, "I am doing something on:" + myString, "YourClassName); } You can also create your own My bio Magnus Sälgö, Sweden MSN: [email protected] Skype: salgo60 You may also be interested in... Here is, in my opinion, the easiest way to get rid of a web part from a site page you cannot directly access through the browser.

Integer function which takes every value infinitely often Is it dangerous to use default router admin passwords if only trusted users are allowed on the network? Wednesday, February 29, 2012 8:18 AM Reply | Quote Answers 0 Sign in to vote In client code you can customize error handing by handling the endRequest event of the PageRequestManager Hey, give me back my page! http://txtbl.com/web-part/web-part-error-log.html This by no means implies that the route I take for exception handling is the right one, in fact, it could probably be improved greatly.

Nice article. I am fine with this process, but I am looking for some input on my approach of using try/catch blocks (as I understand that there can be performance implications). Most of the time, deleting the defected site page will not be an option, especially in a production environment. That way a system engineer will see errors/warnings when doing some maintenance.

Is there any way to bring an egg to its natural state (not boiled) after you cook it? How nice! Finding maximum of added fields Trick or Treat polyglot Why does typography ruin the user experience? We typically do the same thing -- specific catches where possible and generic catches around the whole thing.