Error Handling In Class .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. Development Guide Application Essentials Exceptions Exceptions Best Practices for Exceptions Best Practices for Exceptions Best Practices for Exceptions Exception Class and Properties Exception Hierarchy Exception Handling Fundamentals Best Practices for Exceptions Handling COM Interop Exceptions 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. Best Practices for 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 A well-designed app handles exceptions and errors to prevent app crashes. This article describes best practices for handling and creating exceptions.Handling exceptionsThe following list contains some general guidelines for handling exceptions in your app.Use exception handling code (try/catch blocks) appropriately. You can also programmatically check for a condition that is likely to occur without using exception handling. Programmatic checks. The following example uses an if statement to check whether a connection is closed. If it isn't, the example closes the connection instead of throwing an exception. C#C++VB Copy if (conn.State != ConnectionState.Closed) { conn.Close(); } Exception handling. The following example uses a try/catch block to check the connection and to throw an exception if the connection is not closed. C#C++VB Copy try { conn.Close(); } catch (InvalidOperationException ex) { Console.WriteLine(ex.GetType().FullName); Console.WriteLine(ex.Message); } The method you choose depends on how often you expect the event to occur. Use exception handling if the event doesn't occur very often, that is, if the event is truly exceptional and indicates an error (such as an unexpected end-of-file).
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. General Reference for the .NET Framework Design Guidelines for Developing Class Libraries Design Guidelines for Exceptions Design Guidelines for Exceptions Exception https://msdn.microsoft.com/en-us/library/seyhszts(v=vs.110).aspx Handling Exception Handling Exception Handling Exception Throwing Exception Handling Catching and Throwing Standard Exception Types Designing Custom Exceptions Exceptions and Performance 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. This documentation https://msdn.microsoft.com/en-us/library/ms229005(v=vs.100).aspx is archived and is not being maintained. Exception Handling Visual Studio 2010 Other Versions Visual Studio 2008 .NET Framework 3.5 .NET Framework 3.0 .NET Framework 2.0 The following guidelines help ensure that your library handles exceptions appropriately.Do not handle errors by catching non-specific exceptions, such as System.Exception, System.SystemException, and so on, in framework code.You can catch exceptions when the purpose of catching the exception is to re-throw or transfer the exception to a different thread. The following code example demonstrates incorrect exception handling. C#C++VB Copy public class BadExceptionHandlingExample1 { public void DoWork() { // Do some work that might throw exceptions. } public void MethodWithBadHandler() { try { DoWork(); } catch (Exception e) { // Handle the exception and // continue executing. } } } Avoid handling errors by catching non-specific exceptions, such as System.Exception, System.SystemException, and so on, in application code. There are cases when handling errors in applications is acceptable, but s
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners https://msdn.microsoft.com/en-us/library/5b2yeyab(v=vs.110).aspx 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 http://stackoverflow.com/questions/1221798/one-exception-handler-for-all-exceptions-of-a-class requested has been removed. You’ll be auto redirected in 1 second. .NET Framework 4.6 and 4.5 Development Guide Application Essentials Application Essentials Exceptions error handling Exceptions Exceptions Base Types Collections and Data Structures Generics Numerics Events Exceptions Exception Class and Properties Exception Hierarchy Exception Handling Fundamentals Best Practices for Exceptions Handling COM Interop Exceptions File and Stream I/O Dates, Times, and Time Zones Application Domains and Assemblies Serialization Resources in Desktop Apps Globalization error handling in and Localization Accessibility Attributes 64-bit Applications Class Library Overview Common Language Runtime Managed Execution Process Automatic Memory Management Metadata and Self-Describing Components Language Independence and Language-Independent Components 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. Handling and Throwing 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 Applications must be able to handle errors that occur during execution in a consistent manner. The common language runtime provides a model for notifying applications of errors in a uniform way. All .NET Framework operations indicate failure by throwing exceptions.This topic contains the following sections:Exceptions in the .NET FrameworkExceptions vs. Traditional Error-Handling MethodsHow the Runtime Manages Ex
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 One Exception handler for all exceptions of a CLASS up vote 12 down vote favorite 5 I have a class with number of methods and want to have one exception handler for them all. There are so many of these methods and they have different parameters, that it would be ugly to write try/catch for each of them. Do you maybe know a way where I can do it with having a one in class exception handler, which will handle them all. UPDATE: Many of you ask me why. The reason is that I am calling a data source with various methods. so my class has functions getData1, gedData2, getData3,getData4, ...., getDataN. The problem is that there is no way to check if the connection is still open and creating new connection is very very expensive. So I am trying to reuse connection and if the connection on the next call has failed, i would catch this and reconnect and try again. That is why i need this try/catch all block. to do this for all the functions: try{ datasource.getData() } catch(ConnectionException) { datasource.Connect(); datasource.getData() } Thanks c# exception share|improve this question edited Aug 3 '09 at 12:12 asked Aug 3 '09 at 11:23 husayt 5,25742351 I know it is an old question but I wanted to say that although I mostly agree with the replies below that were submitted on the day the question was asked, there are times when this ability would be very useful. husayt described one above and I found this question because I have another scenario. Even though Jack Allan's answer does not work for my scenario, I upvoted it because it is useful in other situations and it is very clever, IMHO. That said, before you use Jack's "solution" make sure there is not some other way to structure your code to avoid