very exception class derives from the base class System.Exception.The .net Framework is full of predefined exception classes, such as NullReferenceException, IOException, SqlException, and so on. The Exception class includes the essential functionality for identifying any type of error. Here we will see some of the most important members in ASP.NET.very exception class derives from the …
Handling Exceptions The first line of protection in an application is to check for potential error conditions before performing an operation. For example, a program can explicitly check whether the divisor is 0 before performing a calculation or whether a file exists before attempting to open it: If (divisor! =0) { //it is safe to …
The Structured exception handling is particularly flexible because it allows you to catch specific types of exceptions. To do so, you Add multiple catch statement, each one identifying the type of exception (and providing a new variable to catch it in), as follows: Try { //Risky database code goes here. } Catch (System.Data.SqlClient.SqlException err) { …
Mastering Exception When you are working with the structured exception handling keep some points in your mind: Break down your code into multiple try/catch blocks If you kept all your code into one exception handler, you will have to face trouble in determining where the problem occurred. You have no way to “resume“ the code in a …