A little note about the switch statement in C #

Statement (first published in www.kunwsoft.com)
It is certainly not unfamiliar to the switch statement, which allows the program to choose from multiple actions based on the value of the control expression (If-else somewhat similar to the multiple-spoke statement, from a logical process). This is also true in C + + and Java, but in C #, there are some changes in this statement. Let's look at an example below:
switch (letter)
{
Case ' a ':
Console.WriteLine ("AAAAA");
Case ' B ':
Console.WriteLine ("BBBBB");
Break
}
This example in the "Case ' a" section will produce an error, because the program will always execute to "case" B ", which is a cross, but in C #, is prohibited through the occurrence of. Therefore, you must use the "break" "goto" or "return" to prevent the occurrence of the crossing. But the following is an exception:
switch (letter)
{
Case ' a ':
Case ' B ':
Console.WriteLine ("AAAAA");
Break
Case ' C ':
Console.WriteLine ("CCCCC");
Break
}
(The above situation, I believe, do not have to explain, can understand.) ）
At this point, there is another problem, that is: In special circumstances, to enable the program to carry out such a cross, how to achieve? In fact, this is also very simple, the front is not mentioned, you can use the "goto" statement to prevent the program through, in fact, you can use it to achieve through, just use it to jump the program to another "case" not on the line!

Summary: in C + + and Java in the switch, allows the program to traverse, and C # is not allowed, however, you can use the "goto" statement disguised implementation.