Error Handling Tutorial C#
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- Basic Syntax C# - Data Types C# - Type Conversion C# - Variables C# - Constants C# - Operators C# - Decision Making C# - Loops C# - Encapsulation C# - Methods C# - exception handling c# tutorial Nullables C# - Arrays C# - Strings C# - Structure C# - Enums C#
C# File Handling Tutorial
- Classes C# - Inheritance C# - Polymorphism C# - Operator Overloading C# - Interfaces C# - Namespaces C# - Preprocessor Directives
C# Event Handling Tutorial
C# - Regular Expressions C# - Exception Handling C# - File I/O C# Advanced Tutorial C# - Attributes C# - Reflection C# - Properties C# - Indexers C# - Delegates C# - Events C# - Collections
C# Error Handling In Constructor
C# - Generics C# - Anonymous Methods C# - Unsafe Codes C# - Multithreading C# Useful Resources C# - Questions and Answers C# - Quick Guide C# - Useful Resources C# - Discussion Selected Reading Developer's Best Practices Questions and Answers Effective Resume Writing HR Interview Questions Computer Glossary Who is Who C# - Exception Handling Advertisements Previous Page Next Page An exception is a problem that arises during the execution c# error handling get line number of a program. A C# exception is a response to an exceptional circumstance that arises while a program is running, such as an attempt to divide by zero. Exceptions provide a way to transfer control from one part of a program to another. C# exception handling is built upon four keywords: try, catch, finally, and throw. try: A try block identifies a block of code for which particular exceptions is activated. It is followed by one or more catch blocks. catch: A program catches an exception with an exception handler at the place in a program where you want to handle the problem. The catch keyword indicates the catching of an exception. finally: The finally block is used to execute a given set of statements, whether an exception is thrown or not thrown. For example, if you open a file, it must be closed whether an exception is raised or not. throw: A program throws an exception when a problem shows up. This is done using a throw keyword. Syntax Assuming a block raises an exception, a method catches an exception using a combination of the try and catch keywords. A try/catch block is placed around the code that might generate an exception. Code within a try/catch block is referred to as protected code,
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 c# error handling framework Channel 9 Documentation APIs and reference Dev centers Retired content Samples c# error handling techniques We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. Visual c# error handling class Studio 2015 C# C# Programming Guide C# Programming Guide Exceptions and Exception Handling Exceptions and Exception Handling Exceptions and Exception Handling Inside a C# Program Arrays Classes and http://www.tutorialspoint.com/csharp/csharp_exception_handling.htm Structs Delegates Enumeration Types Events Exceptions and Exception Handling Using Exceptions Exception Handling Creating and Throwing Exceptions Compiler-Generated Exceptions How to: Handle an Exception Using try/catch How to: Execute Cleanup Code Using finally How to: Catch a non-CLS Exception File System and the Registry Generics Indexers Interfaces Interoperability LINQ Query Expressions Main() and Command-Line Arguments Namespaces https://msdn.microsoft.com/en-us/library/ms173160.aspx Nullable Types Programming Concepts (C#) Statements, Expressions, and Operators Strings Types Unsafe Code and Pointers XML Documentation Comments 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. Exceptions and Exception Handling (C# Programming Guide) Visual Studio 2015 Other Versions Visual Studio 2013 Visual Studio 2012 Visual Studio 2010 Visual Studio 2008 Visual Studio 2005 The C# language's exception handling features help you deal with any unexpected or exceptional situations that occur when a program is running. Exception handling uses the try, catch, and finally keywords to try actions that may not succeed, to handle failures when you decide that it is reasonable to do so, and to clean up resources afterward. Exceptions can be generated by the common language runtime (CLR), by the .NET Framework or any third-party libraries, or by application code. Exceptions are created by using the throw keyword.In many cases, an exception may
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 https://msdn.microsoft.com/en-us/library/seyhszts(v=vs.110).aspx 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 error handling 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 c# error handling 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, more code is ex