C# Error Messages Best Practice

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C# Error Handling Best Practice

content Samples We’re sorry. The content you requested has been removed. You’ll be c# error codes best practices auto redirected in 1 second. Development Guide Application Essentials Exceptions Exceptions Best Practices for Exceptions Best Practices for Exceptions

C# Error Message Box With Details

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 c# error message class 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 c# error message popup 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). When you use exception handling, less code is executed in normal conditions.Use the programmatic method to check for errors if the event happens routinely and could be considered part of normal execution. When you check for errors programmatically, m

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C# Exception Handling Example

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C# Exception Logging

you, helping each other. Join them; it only takes a minute: Sign up How using try catch for exception handling is best practice up vote 112 down vote favorite 78 while maintaining my colleague's code from even someone https://msdn.microsoft.com/en-us/library/seyhszts(v=vs.110).aspx who claims to be a senior developer, I often see the following code: try { //do something } catch { //Do nothing } or sometimes they write logging information to log files like following try catch block try { //do some work } catch(Exception exception) { WriteException2LogFile(exception); } I am just wondering if what they have done is the best practice? It makes me confused because in my thinking users should know what happens with the http://stackoverflow.com/questions/14973642/how-using-try-catch-for-exception-handling-is-best-practice system. Please give me some advice. c# .net exception exception-handling try-catch share|improve this question edited Feb 20 '13 at 6:45 user1645055 asked Feb 20 '13 at 6:32 Toan Nguyen 5,55231841 87 Snippet #1 is 99.999% of the time unacceptable. –leppie Feb 20 '13 at 6:33 14 Displaying exception directly to user is never a good idea mainly for two reasons: 1. if it's usual user (s)he will be annoyed reading error message that tells very few for him/her. 2. if (s)he's, so called, hacker (s)he may get useful information. The best practice, IMO, is to log exception and show friendly error message. –Leri Feb 20 '13 at 6:35 3 @leppie If something unexpected occurs (like NullReference or ArgumentNull that is not part of application flow) it means that there's a bug that needs to be fixed so logging them will help to debug your code much faster. –Leri Feb 20 '13 at 6:42 9 Using a try-catch block to hide an exception is generally the result of lazy programming. It's a shortcut that is often used instead of writing validation code to test inputs. Very occasionally there are times when an exception may arise that doesn't affect the operation of your code, and hiding it like this might be OK. This is fairly rare however. –Corey Feb 20 '13 at 6

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