包含旨在对数组进行处理的功能。考虑以下示例

Contains is meant to work against arrays. Consider the following examples

PS C:\Users\Cameron> 1,2,3 -contains 1
True

PS C:\Users\Cameron> "123" -contains 1
False

PS C:\Users\Cameron> "123" -contains 123
True

如果您要查看是否 string 包含文本模式，那么您有几个选择。前两个将是 -match 运算符或 .Contains（）字符串方法

If you are looking to see if a string contains a text pattern then you have a few options. The first 2 would be -match operator or the .Contains() string method

1. -match 将是在If语句中使用的更简单示例之一。 注意： -Match 支持.Net正则表达式，因此请确保不要输入任何特殊字符，因为可能无法获得预期的结果。

1. -match would be one of the simpler examples to use in and If statement. Note: -Match supports .Net regular expressions so be sure you don't put in any special characters as you might not get the results you expect.

PS C:\Users\Cameron> "Matt" -match "m"
True

PS C:\Users\Cameron> "Matt" -match "."
True

-比赛是默认情况下不区分大小写，因此上面的第一个示例返回True。第二个示例正在寻找匹配 any 字符，这是的含义。在正则表达式中表示，这也是为什么它也返回True的原因。

-match is not case sensitive by default so the first example above returns True. The second example is looking to match any character which is what . represents in regex which is why it returns True as well.

。Contains（）： -match 很好，但对于简单的字符串，您就可以....

.Contains(): -match is great but for simple strings you can ....

"123".Contains("2")
True

"123".Contains(".")
False

注意 .Contains（）是区分大小写的

"asdf".Contains('F')
False

"asdf".Contains('f')
True