C# Beginner to advanced - Lesson 34 - Exception Handling (try, catch, throw and finally) скачать в хорошем качестве

C# Beginner to advanced - Lesson 34 - Exception Handling (try, catch, throw and finally)

Types of Errors: In programming language, whenever we write a piece of code, then we compile and execute. In this situation we may have chance to get three types of errors as mentioned below: Syntactical Error : example : “ “ , ; and wrong spelling to syntax. Compile time Error : example : “ “ , ; wrong spelling to syntax and Wrong data to a variable Run time Error : example : When we are trying to create object to an abstract class. Exception Handling Mechanism : Runtime Error is nothing but an exception. So if program is having some exception, we need to handle the exception and to do that we have Exception handling Mechansim. Following are the exception handling mechanisms : Logical implementation try catch implementation Syntax for try catch and finally try { // block of code to monitor for errors } catch (ExcepType1 exOb) { // handler for ExcepType1 } catch (ExcepType2 exOb) { // handler for ExcepType2 }... finally { // finally code } Generic and Specific Catch Block: Catch block without Exception Class is called as Generic Catch Block. Catch block with Exception Class is called as Specific Catch Block. Commonly Used Exceptions: ArrayTypeMismatchException Type of value being stored is incompatible with the type of the array. DivideByZeroException Division by zero attempted. IndexOutOfRangeException Array index is out-of-bounds. InvalidCastException A runtime cast is invalid. OutOfMemoryException Insufficient free memory exists to continue program execution. For example, this exception will be thrown if there is not sufficient free memory to create an object via new. OverflowException An arithmetic overflow occurred. NullReferenceException An attempt was made to operate on a null reference—that is, a reference that does not refer to an object. ankpro ankpro training Asp.net MVC C# C sharp Bangalore Rajajinagar Selenium Coded UI Mobile automation testing Mobile testing JQuery JavaScript .Net Components of the .Net framework Hello World Literal Keywords Variable Data types Operators Branching Loops Arrays ArrayList Strings String Builder Structures Enums Functions Classes Inheritance Polymorphism Properties Indexers Events Nested Classes Delegates Anonymous methods Labda expressions Abstract classes Exception Handling Linq Interfaces Extension methods Anonymous types Generics Collections Garbage Collection Reflection Attributes Input and output statements Type casting Boxing and Unboxing Var vs Dynamic vs Object