How To Handle Error Messages In Asp.net
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Retired content Samples We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. MSDN Library MSDN Library MSDN Library MSDN Library Design Tools Development Tools and Languages Mobile and Embedded Development .NET Development Office development Online Services Open Specifications patterns & practices Servers and Enterprise Development Speech Technologies Web Development Windows Desktop App Development TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. How to: Display Safe Error Messages Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 .NET Framework 3.0 Visual Studio 2005 When your application displays error messages, it should not give away information that a malicious user might find helpful in attacking your system. For example, if your application unsuccessfully tries to log in to a database, it should not display an error message that includes the user name it is using. There are a number of ways to control error messages, including the following: Configure the application not to show verbose error messages to remote users. (Remote users are those who request pages while not working on the Web server computer.) You can optionally redirect errors to an application page. Include error handling whenever practical and construct your own error messages. In your error handler, you can test to see whether the user is local and react accordingly. Create a global error handler at the page or application level that catches all unhandled exceptions and routes them to a generic error page. That way, even if you did not anticipate a problem, at least users will not see an exception page. To configure the application to turn off errors for remote users In the Web.config file for your application, make the following changes to the customErrors element: Set the mode attribute to RemoteOnly (case-sensitive). This configures t
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Samples Retired content We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. MSDN Library MSDN Library MSDN Library MSDN Library Design Tools Development Tools and Languages Mobile and Embedded https://msdn.microsoft.com/en-us/library/994a1482.aspx Development .NET Development Office development Online Services Open Specifications patterns & practices Servers and Enterprise Development Speech Technologies Web Development Windows Desktop App Development TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not https://msdn.microsoft.com/en-us/library/bb397417.aspx being maintained. Complete Example for Error Handlers Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 This code example includes elements for both page-level and application-level exception handling. Code Example Files The example consists of the following files: Web.config Global.asax Default.aspx ExceptionUtility (to be put in the App_Code folder) GenericErrorPage.aspx HttpErrorPage.aspx Http404ErrorPage.aspx DefaultRedirectErrorPage.aspx Web.config The following example shows the Web.config file. The customErrors section specifies how to handle errors that occur with file types that are mapped to ASP.NET, such as .aspx, .asmx, and .ashx files. (In IIS 6.0 and in IIS 7.0 in classic mode, static content files such as .html and .jpg files are not mapped to ASP.NET.) The settings in the example customErrors section cause any unhandled HTTP 404 (file not found) errors to be directed to the Http404ErrorPage.aspx file. These HTTP 404 errors would occur if a request were made for an .as
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings http://stackoverflow.com/questions/651592/how-to-display-an-error-message-box-in-a-web-application-asp-net-c-sharp and policies of this site About Us Learn more about Stack https://channel9.msdn.com/coding4fun/articles/Displaying-Gentle-Error-Messages-with-ASPNET Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; how to it only takes a minute: Sign up How to display an error message box in a web application asp.net c# up vote 7 down vote favorite 2 I have an ASP.NET web application, and I wanted to know how I could display an error message box when an exception is thrown. For example, try { do something } catch { how to handle messagebox.write("error"); //[This isn't the correct syntax, just what I want to achieve] } [The message box shows the error] Thank you c# asp.net web-applications messagebox share|improve this question edited Mar 16 '09 at 18:46 asked Mar 16 '09 at 18:22 zohair 97692137 add a comment| 8 Answers 8 active oldest votes up vote 11 down vote accepted You can't reasonably display a message box either on the client's computer or the server. For the client's computer, you'll want to redirect to an error page with an appropriate error message, perhaps including the exception message and stack trace if you want. On the server, you'll probably want to do some logging, either to the event log or to a log file. try { .... } catch (Exception ex) { this.Session["exceptionMessage"] = ex.Message; Response.Redirect( "ErrorDisplay.aspx" ); log.Write( ex.Message + ex.StackTrace ); } Note that the "log" above would have to be implemented by you, perhaps using log4net or some other logging utility. share|improve this answer edited Mar 16 '09 at 18:49 answered Mar 16 '09 at 18:25 tvanfosson 351k6
information from MSDN Visual Studio Achievements Latest Achievement: Loading Visual Studio Achievements Something went wrong getting the Visual Studio Achievements Follow us @ch9 Subscribe to Channel 9 Sign In Channel9 Browse Tags Shows Series Blogs Authors Events Topics Coding4Fun Windows Azure Visual Studio DevOps Microsoft Mechanics MVPs Forums Coffeehouse Site Feedback Tech Off Build Events WinHEC Visual Studio TechEd Build Microsoft Ignite Azure Speakers Coding4FunArticles Displaying Gentle Error Messages withASP.NET Posted: Dec 28, 2006 at 7:51PM By: Stephen Walther Average: 0 11 comments reddit Tweet Learn how to display gentler error messages when errors are encountered while developing ASP.NET applications. In this article, Stephen Walther shows you how you can modify the default ASP.NET error page so that it displays motivational sounds, messages, and pictures. Stephen Walther Stephen's Blog Difficulty: Easy Time Required: Less than 1 hour Cost: Free Software: Visual Web Developer 2005 Express Edition Hardware: Download: Download I fly out to companies and teach workshops on building ASP.NET applications to developers new to the ASP.NET framework. Typically a developer starts out excited to learn something new. Unfortunately, a developer's first experience of the ASP.NET framework is often the error page -- the angry page with the yellow background and the red error message. When a novice developer encounters their first error message, I try to be reassuring. I explain that errors are normal and good and that an ASP.NET developer will view the error page at least half a billion times while developing a project of any reasonable complexity. After all, the mark of a good development framework is that it throws a lot of errors at you. A framework that throws a lot of errors prevents you from doing something stupid and deploying a buggy application into production. However, the question remains: why does the ASP.NET Framework seem so angry? Why the harsh yellow background and bold red error messages (see Figure 1)? Why can't the error page be more gentle? In other words, why can't the error page be more Myst than