Asp.net Vb Error Handling
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Vba Error Handling
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C# Error Handling
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. 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
Sql Error Handling
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 .aspx file, .asmx file, and so on and if the requested file did not exist. All other unhandled errors in ASP.NET files are directed to the DefaultRedirectErrorPage.aspx file. If static content files are not handled by ASP.NET, a request for a nonexistent .html or .jpg file does not cause a redirect to the Http404ErrorPage.aspx file. If you want ASP.NET to handle requests for all file types, you can configure IIS t
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Visual Basic Error Handling
Web Forms and Visual Studio2. Create the Project3. Create the Data Access Layer4. UI and Navigation5. Display visual basic 6 error handling 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 https://msdn.microsoft.com/en-us/library/bb397417.aspx 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 http://www.asp.net/web-forms/overview/getting-started/getting-started-with-aspnet-45-web-forms/aspnet-error-handling 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 Resources for ASP.NET Data AccessSecurity, Authentication, and Authorization Getting Started with ASP.NET 4.5 Web FormsASP.NET IdentityCreate a secure ASP.NET Web Forms app with user registration, email confirmation and password reset (C#)Create an ASP.NET Web Forms app with SMS T
UsConsultingConsulting HomeServices & TechnologiesVFP ConversionAzure & Other CloudsEnergy SoftwareContact UsStaffingStaffing HomeLooking for Staff?Looking for Work?Contact UsMagazineMagazine HomeAll IssuesSubscribeMy (Digital) MagazinesWhere is my Magazine?My Subscriber AccountAdvertiseWriteFrameworkFramework HomeGet Started & DocumentationDownloadSupport & ServicesTrainingTraining HomeClassesMentoringState http://www.codemag.com/article/0307081 of .NETLunch with CODECode CampsASP.NET MVCDevNet TrainingVFP ConversionVFP Conversion HomeServicesToolsArticlesFox End of LifeContact UsSign in! Advertisement: Errors In Your ASP.NET Code? Don't Throw a http://www.aspnettutorials.com/tutorials/errorhandling/err-throw-aspnet2-vb/ Fit, Throw an Exception! By Jim Duffy Tweet Jim Duffy Jim Duffy is founder and president of TakeNote Technologies, an award-winning training, consulting, error handling and software development company specializing in .NET software developer training and helping clients create business solutions with Microsoft enterprise technologies. Jim’s expertise is with .NET technologies, ASP.NET, SQL Server and Visual FoxPro-to-.NET conversions. He has a BS degree in Computer and Information Systems and over 25 years of 6 error handling programming and training experience. He is an energetic trainer, skilled developer, and has been published in leading developer-oriented publications.Jim is a Microsoft Regional Director, a Microsoft MVP, an ASPInsider, and is an entertaining and popular speaker at regional user groups and international developer conferences.You can find additional information about Jim, TakeNote Technologies, links to his blog, as well as a public training class schedule, on-site training information, consulting information, and software development services at www.takenote.com.jduffy@takenote.com This article was published in: This article was filed under: .NET Framework ASP.NET WebForms VB.NET .NET Getting Started Advertisement: Error handling?everyone's favorite topic right?Even the best designed applications need to handle and properly manage errors the errors you can plan for and those you cannot.In this article, you'll learn error handling techniques in ASP.NET. Topics will range from handling common errors with the Try...Catch syntax to loggin
Comments. This tutorial will show you how to throw exceptions using ASP.NET 2.0 and VB.NET Throwing exceptions are easy to do in C# .NET. In this example we will be throwing exceptions when trying to create a directory in the filesystem, so we will need the System.IO namespace. Our code will catch two exceptions if the user tries to create a directory that is 248 characters long or tries to specify an invalid character within the directory name (such as the asterisk character). Visual Basic Imports System.IO 012 Imports System.IO We'll put our code in the btnSubmit_Click() event. When the btnSubmit_Click() event fires it runs a try block. The try block does two things: it lets exceptions thrown during the try block's execution to be caught by the catch block(s) below and ensures that execution can't leave the try block without running a finally block. In this example, we are specifying that our catch blocks handles exceptions of the type PathTooLongException and ArgumentException. We are also adding an if block that will throw an ArgumentException if there is a "\" character in the directory name. Visual Basic Try Directory.CreateDirectory(MapPath(".") & "\" & txtDir.Text) ' adding this line throws an ArgumentException even if the \ character is normally valid If txtDir.Text.Contains("\") Then Throw New ArgumentException("Directory name cannot contain the ""\"" character") End If Catch ex As PathTooLongException lblStatus.Text = "There was an PathTooLongException when creating the directory" lblStatus.Text &= " in " & MapPath(".") & "\" & Constants.vbCr Catch ex As ArgumentException lblStatus.Text = "There was a ArgumentException when creating the directory" lblStatus.Text &= " in " & MapPath(".") & "\" & Constants.vbCr lblStatus.Text += ex.Message + Constants.vbCr Catch ex As Exception lblStatus.Text = ex.Message End Try 01234567891011121314151617 TryDirectory.CreateDirectory(MapPath(".") & "\" & txtDir.Text)' adding this line throws an ArgumentException even if the \ character is normally validIf txtDir.Text.Contains("\") ThenThrow New ArgumentException("Directory name cannot contain the ""\"" character")End IfCatch ex As PathTooLongExceptionlblStatus.Text = "There was an PathTooLongException when creating the directory"lblStatus.Text &= " in " & MapPath(".") & "\" & Constants.vbCrCatch ex As Argu