User kokos answered the wonderful hidden features of c# question by mentioning the using keyword. Use和using的区别为：意思不同、用法不同、词性不同。 一、意思不同 1、use：用，使用。 2、using：利用，运用。 二、用法不同 1、use：use是及物动词，接名词、代词作宾语。也可接由as短. What are the uses of using?
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Although i think it would be better to organize like this because it's a lot easier to see what is. The using scope modifier is supported in the following contexts: The identifier following the using.
From msdn, using statement (c# reference) the using statement ensures that dispose is called even if an exception occurs while you are calling methods on the object.
Using the using keyword can be useful. Can you elaborate on that? For example, you can use a. Either way, when the using block is exited (either by successful completion or by error) it is closed.
Using using can help you use disposable objects more usefully. In c++11, the using keyword when used for type alias is identical to typedef. Using using helps prevent problems using exceptions. A using clause can be used with an execute statement in pl/pgsql language (language plpgsql) for a function, procedure and do statement.
