Use String.IsNullOrEmpty to determine whether the string is empty.

String.IsNullOrEmpty

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Previously judged whether the string was empty, always use s = = NULL | | S.length = 0, today in Captain Jack saw an article, just know that the string class also has such a function string.isnullorempty (), it can be used to determine whether the string is empty.

Although Captain Jack says it's going to be slow, I think this millions is a little bit more unusual. Let's use the system to provide this. I am too lazy ... Old like to use the system to provide. This article address: