1 int[] ia = {1,2,3}; 2 int id = Array.IndexOf(ia,1); // 这里的1就是你要查找的值
1 string[] strArr = {"a","b","c","d","e"}; 2 bool exists = ((IList)strArr).Contains("a");
[1] https://www.cnblogs.com/superelement/p/7691229.html
原文：https://www.cnblogs.com/luyj00436/p/11653343.html