How To Write Error Messages In Asp.net
Websites Community Support ASP.NET Community Standup ForumsHelp Web Forms:Guidance Videos Samples Forum Books Open Source Getting Started Getting StartedGetting Started with ASP.NET 4.5 Web Forms and Visual Studio 20131. Getting Started with Web Forms and Visual Studio2. Create the Project3. Create the Data Access Layer4. UI and Navigation5. Display Data Items and Details6. Shopping Cart7. Checkout and Payment with PayPal8. Membership and Administration9. URL Routing10. ASP.NET Error HandlingIntroduction to ASP.NET Web FormsCreating a Basic Web Forms Page in Visual Studio 2013Creating ASP.NET Web Projects in Visual Studio 2013Code Editing ASP.NET Web Forms in Visual Studio 2013ASP.NET Scaffolding in Visual Studio 2013ASP.NET Web Forms (dotnetConf 2014)Using Page Inspector for Visual Studio 2012 in ASP.NET Web FormsVisual Studio 2012 Hands On LabsWhat's New in ASP.NET and Web Development in Visual Studio 2012What's New in Web Forms in ASP.NET 4.5Using Page Inspector in Visual Studio 2012Monitoring and TelemetryRoutingASP.NET 4 - RoutingASP.NET 4 - Defining RoutesASP.NET 4 - Constructing URLs from RoutesASP.NET 4 - Accessing URL Parameters in a PageJavaScript and Client FrameworksASP.NET 4 - Microsoft Ajax OverviewASP.NET AJAX Control Toolkit (maintained by DevExpress)Working with Data Getting Started with ASP.NET 4.5 Web FormsModel Binding and Web Forms in Visual Studio 20131. Retrieving and Displaying Data2. Updating, Deleting, and Creating Data3. Sorting, Paging, and Filtering Data4. Integrating JQuery UI Datepicker5. Using Query String Values to Filter Data6. Adding Business Logic LayerASP.NET 4 Web Forms - Validating User Input in a PageASP.NET 4 Web Forms - State ManagementASP.NET Data Access - Recommended ResourcesServer Data ControlsASP.NET 4 Data-Bound ControlsASP.NET 4 Data Source Controls OverviewASP.NET 4.5 Chart ControlRecommended R
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 in an ASP.NET Web Application [duplicate] up vote 3 down vote favorite 1 I https://www.asp.net/web-forms/overview/getting-started/getting-started-with-aspnet-45-web-forms/aspnet-error-handling 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 Duplicate of http://stackoverflow.com/questions/651592/how-to-display-an-error-message-box-in-a-web-application-asp-net-c/651601 c# asp.net custom-errors share|improve this question edited May 2 '12 at 16:39 Mr Lister 25k85381 asked Mar http://stackoverflow.com/questions/651716/how-to-display-an-error-message-in-an-asp-net-web-application 16 '09 at 19:00 zohair 97692137 marked as duplicate by tvanfosson, Andrew Hare, TheTXI, BFree, cgreeno Mar 16 '09 at 19:09 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. Duplicate of stackoverflow.com/questions/651592/… –Perchik Mar 16 '09 at 19:03 If you edit the question to link to a duplicate, please put the link at the bottom so it doesn't alter the summary text on the main pages. –Joel Coehoorn Mar 16 '09 at 19:06 @ZOHAIR: You can see your previous questions and their answers at stackoverflow.com/users/70398/zohair –Ramesh Mar 16 '09 at 19:06 ... this is one time when 'Exact Duplicate' isn't going to get any argument. –John MacIntyre Mar 16 '09 at 19:06 That was the point of putting it at the top so people would recognize it as a duplicate and be able to close it more easily. –tvanfosson Mar 16 '09 at 19:07 | show 3 more comments 3 Answers 3 active oldest votes up vote 7 down vote accepted Roughly you can do it like that : try { //do something } catch (Exception ex) { string script = "scriptalert('" + ex.Message + "');"; if (!Page.IsStartupScriptRegistered("myErrorScript")) { Page.ClientScript.RegisterStartupScript("myErrorScript", sc
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 http://stackoverflow.com/questions/777889/on-postback-how-can-i-add-a-error-message-to-validation-summary 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 On postback, how can I add a error message to validation summary? up vote 50 down vote favorite 12 Two how to questions: On postback when a user clicks submit, how can I add a error message to validation summary? Is it also possible to highlight a particular textbox using the built in .net validation controls? asp.net validation share|improve this question edited Apr 22 '09 at 15:57 TStamper 22.1k85069 asked Apr 22 '09 at 15:39 Blankman 64.4k197564924 add a comment| 5 Answers 5 active oldest votes up vote 71 down vote Dynamically create a CustomValidator how to write control and add it directly to the Page.Validators collection. Dim err As New CustomValidator err.ValidationGroup = "MyGroup" err.IsValid = False err.ErrorMessage = "The password is invalid" Page.Validators.Add(err) Unlike adding the CustomValidator to the markup, this method allows you to add any number of arbitrary error messages based on server-side business logic. Note that you can also add it to the page directly, but there are a couple of rules to follow: You must add the control to the same naming container as the controls of the validation group. If you don't want the validation message to appear in a random position in the page, you will either have to add the validator to a specific container or you will need to supress it using a CSS class or style. You can also create a custom class and implement IValidator, which enables you to add the message with one line of code, but this method doesn't support Validation Groups. Per Anders Fjeldstad's suggestion, here is a set of handy extension methods. Imports Microsoft.VisualBasic Imports System.Runtime.CompilerServices Public Module PageExtensions