string[] A = new string[] { "朱雅君", "姚怡尔", "涂静" };
            string[] B = new string[] { "姚怡尔", "涂静", "刘刚" };
            var re = (from a in A select a).Intersect(from b in B select b).ToArray();

------解决方案--------------------
C# code

            string[] A = new string[]{"朱雅君","姚怡尔","涂静"};
            string[] B = new string[]{"姚怡尔","涂静","刘刚"};
            var vs = from s in A where B.Contains(s) select s;
            foreach (var v in vs)
            {
                MessageBox.Show(v.ToString());
            }

------解决方案--------------------
linq就是好用。。简单又清晰

------解决方案--------------------
探讨


var same=A.Intersect(B).ToArray();


------解决方案--------------------
探讨


引用:

var same=A.Intersect(B).ToArray();

你们都是LINQ狂


------解决方案--------------------
Linq非常方便。我给你们写个原始点的吧。。
C# code

      string[] A = {"朱雅君","姚怡尔","涂静"};
            string[] B = {"姚怡尔","涂静","刘刚"};
           
            foreach (var item in A)
            {
                foreach (var item2 in B)
                {
                    if (item == item2)
                        return item2;
                }   
            }