Display Error Message In Catch Asp.net
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack 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; 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 { 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 351k65570700 Upvoted for saying what I was trying to say. –Bobby Cannon Mar 16 '09 at 18:28 @tvanfosson - It is not that they cannot display message box on server side or client side. They should just avoid doing so. :) –Ramesh Mar 16 '09 at 18:38 @Ramesh -- clarified. –tvanfosson Mar 16 '09 at 18:51 add a comment| up vote 12 down vote You cannot just call messagebox.write cause you are disconnected from the client. You should register javascript code that shows a messagebox: this.RegisterClientScriptBlock(typeof(string), "key", string.Format("alert('{0}');", ex.Message), true);
ASP.NET web-site, and would like the ability to conditionally show/hide runtime error messages depending on who the user visiting the site is.For a normal user visiting the site you want to be able to display a friendly error message like this when a runtime error occurs: But when someone within the “developers” security role of your application remotely accesses the site you want to instead show a more detailed exception stack trace error message http://stackoverflow.com/questions/651592/how-to-display-an-error-message-box-in-a-web-application-asp-net-c-sharp about the problem without having to change any configuration data: The below post describes how to use ASP.NET’s role-based security architecture in conjunction with the Global.asax Application_Error event handlerto enable this. You can also download a sample I’ve built that shows how to implement this here.Some Background Discussion on Error Handling and ASP.NET Custom https://weblogs.asp.net/scottgu/Tip_2F00_Trick_3A00_-Show-Detailed-Error-Messages-to-Developers Error Pages:ASP.NET and .NET support a rich error-handling architecture that provides a flexible way to catch/handle errors at multiple levels within an application. Specifically, you can catch and handle a runtime exception with a class, within a page, or on the global application level using the Application_Error event handler within the Global.asax class. If a runtime exception isn’t handled/cancelled by one of these mechanisms, then ASP.NET’s Custom Error Page feature will kick-in, and an error page will be sent back to the browser accessing the application.ASP.NET’s Custom Error Page feature can be used to configure a “friendly error page” to be displayed to end-users in place of the standard “server error occurred” message sent back by ASP.NET. For example, the below web.config file section will cause remote users visiting the site to be redirected to a “friendlyErrorPage.htm” file anytime a runtime error occurs (note: HTTP 500 status code responses indicate runtime errors on the server): resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards https://msdn.microsoft.com/en-us/library/994a1482.aspx 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 https://www.daniweb.com/programming/web-development/threads/286480/exception-message-in-c-net-web-site 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 display error 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. display error message 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. C#.net web site 6Contributors 8Replies 13Views 6 YearsDiscussion Span 6 Years Ago Last Post by __avd 0 6 Years Ago i m developing website in C#.net but my exception message is not displaying in alert box how can i disply my exception in text box in try catch any body pls tell me umair.sabri -2 30 posts since May 2010 Community Member asp.net Ask a Different Question 0 MARKAND911 -1 6 Years Ago let the textbox in which u have to display message be txtMessage try { // Your Code } catch(excetion ex) { txtMessage.text=ex.message.tostring(); } If problem solved than mark it as SOLVED. Also visit markand-bhatt.blogspot.com 0 JamesLogan -1 6 Years Ago Try this one.... // // Your code // try { // place your code which may get error. } catch(exception ex) { YourTextBoxName.Text = ex.message().tostring(); or YourLabelName.Text = ex.message().tostring(); } place the validation code in try block only. dont place other than this. it wont give you where exactly you will get the error. Any doubts ask me... Thanks 0 Rajmendra 6 Years Ago // Rajmendra //Asp.net Web Developer //India try { //Your Code goes here } catch(Exception ex) { Please do right Below Line another your Code will not work// string strm = ex.Message.Replace('\'',' '); string str = ""; ClientScript.RegisterStartupScript(typeof(Page), "showmessage", str); } 0 Rajmendra 6 Years Ago just copy and past it then run Typing this can Be caues to failer of Code 0 Discussion Starter umair.sabri -2 6 Years Ago i m developing website in C#.net but my exception message is not displaying in alert box how can i disply my exception in alertbox in try catch any body pls tell me i have tried all of these but n0 result................... ScriptManager.RegisterStartupScript(this, typeof(Page), "test", "alert('Error - TRANSACTION ROLLED BACK'," + ex.Message + ");", true); ClientScript.RegisterClientScriptBlock(typeof(Page), "test", "scriptalert('Error - TRANSACTION ROLLED BACK" + ex.Message + "');"); Response.Write("scriptalert('Error - TRANSACTION ROLLED BACK')" + ex.Message); 0 dnanetwork 18 6 Years Ago try { int