Error Handling In .net 4.0
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. 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 .aspx file, .asmx file, and so on and if the requested file did not exist. All other unhandled errors 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. .NET Framework 4.6 and 4.5 .NET Framework Class Library System System Exception Class Exception Class Exception Class _AppDomain Interface AccessViolationException Class Action Delegate https://msdn.microsoft.com/en-us/library/bb397417.aspx Action(T) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) Delegate Action(T1, T2, https://msdn.microsoft.com/en-us/library/system.exception(v=vs.110).aspx T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16) Delegate Action(T1, T2) Delegate Action(T1, T2, T3) Delegate Action(T1, T2, T3, T4) Delegate Action(T1, T2, T3, T4, T5) Delegate Action(T1, T2, T3, T4, T5, T6) Delegate Action(T1, T2, T3, T4, T5, T6, T7) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9) Delegate ActivationContext Class ActivationContext.ContextForm Enumeration Activator Class AggregateException Class AppContext Class AppDomain Class AppDomainInitializer Delegate AppDomainManager Class AppDomainManagerInitializationOptions Enumeration AppDomainSetup Class AppDomainUnloadedException Class ApplicationException Class ApplicationId Class ApplicationIdentity Class ArgIterator Structure ArgumentException Class ArgumentNullException Class ArgumentOutOfRangeException Class ArithmeticException Class Array Class ArraySegment(T) Structure ArrayTypeMismatchException Class AssemblyLoadEventArgs Class AssemblyLoadEventHandler Delegate AsyncCallback Delegate Attribute Class AttributeTargets Enumeration AttributeUsageAttribute Class BadImageFormatException Class Base64FormattingOptions Enumeratio
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 https://msdn.microsoft.com/en-us/library/xtd0s8kd(v=vs.110).aspx centers Retired content Samples We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. Application Essentials Exceptions Exception Handling Fundamentals Exception Handling Fundamentals How to: http://www.codeproject.com/Articles/10593/Error-Handling-in-ASP-NET Use the Try/Catch Block to Catch Exceptions How to: Use the Try/Catch Block to Catch Exceptions How to: Use the Try/Catch Block to Catch Exceptions How to: Use the Try/Catch Block error handling to Catch Exceptions How to: Use Specific Exceptions in a Catch Block How to: Explicitly Throw Exceptions How to: Create User-Defined Exceptions Using User-Filtered Exception Handlers How to: Use Finally Blocks 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: Use error handling in the Try/Catch Block to Catch Exceptions .NET Framework (current version) Other Versions Visual Studio 2010 .NET Framework 4 Silverlight .NET Framework 3.5 .NET Framework 3.0 .NET Framework 2.0 .NET Framework 1.1 Place the sections of code that might throw exceptions in a try block and place code that handles exceptions in a catch block. The catch block is a series of statements beginning with the keyword catch, followed by an exception type and an action to be taken.Note Almost any line of code can cause an exception, particularly exceptions that are thrown by the common language runtime itself, such as OutOfMemoryException and StackOverflowException. Most applications do not have to deal with these exceptions, but you should be aware of this possibility when writing libraries to be used by others. For suggestions on when to set code in a try block, see Best Practices for Handling Exceptions.The following code example uses a try/catch block to catch a possible exception. The Main method contains a try block with a StreamReader statement that opens a data file called data.txt and writes a string from the file. Following the try block
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