How To Display 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 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 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 https://msdn.microsoft.com/en-us/library/994a1482.aspx maintained. This documentation is archived and is not being maintained. How to: Control Validation Error Message Display for ASP.NET Server Controls Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 .NET Framework 3.0 Visual Studio 2005 Visual Studio .NET 2003 In Microsoft Visual Web Developer, you can display error message text in four different ways, as described in the following table. Display method Description Inline The error message appears next https://msdn.microsoft.com/en-us/library/1ze30x3t.aspx to the control, in the place where the validation control is located. Summary The error message is displayed in a separate summary of all errors, which is available only when the user submits the page. Optionally, the error message can appear in a message box, but this option is available only in browsers that support dynamic HTML (DHTML). Inline and summary The error message can be different in the summary and inline. You can use this option to show a shorter error message inline, with more detail in the summary, or to show an error glyph next to the input field and an error message in the summary. Custom You can create your own error message display. For more information, see How to: Display Server Side Custom Validation Messages for ASP.NET Server Controls. If you want to display summarized error messages, you need to add a control to the page. To display summarized error messages Add a ValidationSummary control to the page at the location where you want to display the collected error messages. Set the ErrorMessage and Display properties of the individual validation controls. Set the DisplayMode property of the summary control to format the error messages, using one of the following values that are defined in the ValidationSummaryDisplayMode enumeration: Value Display Bulle
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