Asp. Use of exception Handling in net (verbose)

The asp.net| exception handling common language runtime (CLR) has a great advantage in that exception handling is standardized across languages. An exception that is thrown in C # can be handled in the Visual Basic client. There is no longer a hresults or ISupportErrorInfo interface.
Although the coverage of cross language exception handling is extensive, this chapter focuses entirely on C # exception handling. You slightly change the compiler's overflow behavior, and then the interesting thing begins: you handle the exception. To add more means, then raise the exception you created.
7.1 Checksum (checked) and non-checksum (unchecked) statements
When you perform an operation, it is possible that the calculated result is beyond the valid range of the result variable data type. This situation is called overflow, and depending on the programming language, you will be notified in some way-or not at all. (Does C + + programmers sound familiar?) ）
So, how does C # handle overflow? To find out its default behavior, see the example of factorial I mentioned earlier in this book. (For your convenience, the previous example is shown again in Listing 7.1)

Listing 7.1 calculates the factorial of a number

1:using System;
2:
3:class factorial
4: {
5:public static void Main (string&#; args)
6: {
7:long nfactorial = 1;
8:long Ncomputeto = Int64.parse (args