try-catch (C# Reference) 07/20/2015; 8 minutes to read +7; In this article. The try-catch statement consists of a try block followed by one or more catch clauses, which specify handlers for different exceptions.. Remarks. When an exception is thrown, the common language runtime (CLR) looks for the catch statement that handles this exception. If the currently executing method does not contain ...
What is the difference between catch and catch (Exception e)?. Both of your examples are the same and equally useless - they just catch an exception and then rethrow it. One minor difference is that the first example will generate a compiler warning.
For more information, see Exceptions and The throw statement in the C# Language Specification. The language specification is the definitive source for C# syntax and usage. The language specification is the definitive source for C# syntax and usage.
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.
The C# try and catch keywords are used to define a try catch block. A try catch block is placed around code that could throw an exception. If an exception is thrown, this try catch block will handle the exception to ensure that the application does not cause an unhandled exception, user error, or crash the application.
try-catch-finally (C# Reference) 07/20/2015; 2 minutes to read +4; In this article. A common usage of catch and finally together is to obtain and use resources in a try block, deal with exceptional circumstances in a catch block, and release the resources in the finally block.. For more information and examples on re-throwing exceptions, see try-catch and Throwing Exceptions.
This C# example reveals the use of the throw keyword. Throw is a way to manually cause an error.
throw can also be used in a catch block to re-throw an exception handled in a catch block. In this case, throw does not take an exception operand. It is most useful when a method passes on an argument from a caller to some other library method, and the library method throws an exception that must be passed on to the caller.
If you catch System.Exception, rethrow it using the throw keyword at the end of the catch block. If a catch block defines an exception variable, you can use it to obtain more information about the type of exception that occurred. Exceptions can be explicitly generated by a program by using the throw keyword.
C# Try Catch. The try..catch statement in C# is used in exception handling. In this article, I'll explain the use of try-catch in a .NET application including try-catch-finally and try-catch-finally-throw.