public static uint IPToInt(string ipAddress)
{
string disjunctiveStr = ".,: "; char[] delimiter = disjunctiveStr.ToCharArray(); string[] startIP = null; for (int i = 1; i <= 5; i++)
{ startIP = ipAddress.Split(delimiter, i);
} string a1 = startIP[0].ToString(); string a2 = startIP[1].ToString(); string a3 = startIP[2].ToString(); string a4 = startIP[3].ToString(); uint U1 = uint.Parse(a1); uint U2 = uint.Parse(a2); uint U3 = uint.Parse(a3); uint U4 = uint.Parse(a4); uint U = U1 << 24; U += U2 << 16; U += U3 << 8; U += U4; return U;
} public static string IntToIP(uint ipAddress) { long ui1 = ipAddress & 0xFF000000; ui1 = ui1 >> 24; long ui2 = ipAddress & 0x00FF0000; ui2 = ui2 >> 16; long ui3 = ipAddress & 0x0000FF00; ui3 = ui3 >> 8; long ui4 = ipAddress & 0x000000FF; string IPstr = ""; IPstr = System.Convert.ToString(ui1) + "." + System.Convert.ToString(ui2) + "." + System.Convert.ToString(ui3) + "." + System.Convert.ToString(ui4); return IPstr; }最近在做一个项目的时候需要用到IP地址的判断，在博客园里搜索了下发现马上就找到了相关的函数，谢谢作者，原文作者：http://www.cnblogs.com/dongyi/。
