1.int转string
int a = 2;
string b = a.ToString();
string s2 = Convert.ToString(a);
2.string转int
string s = "18"; int a1 = int.Parse(s); int a2; int.TryParse(s, out a2); int a3 = Convert.ToInt32(s);
原文：http://www.cnblogs.com/huangshiyu13/p/5652090.html