C#代码验证IP地址,包含格式和是否超过255的限制
/// <summary> /// Check IP Address, will accept 0.0.0.0 as a valid IP /// </summary> /// <param name="strIP"></param> /// <returns></returns> public Boolean CheckIPValid(String strIP) { // Split string by ".", check that array length is 3 char chrFullStop = '.'; string[] arrOctets = strIP.Split(chrFullStop); if (arrOctets.Length != 4) { return false; } // Check each substring checking that the int value is less than 255 and that is char[] length is !> 2 Int16 MAXVALUE = 255; Int32 temp; // Parse returns Int32 foreach (String strOctet in arrOctets) { if (strOctet.Length > 3) { return false; } temp = int.Parse(strOctet); if (temp > MAXVALUE) { return false; } } return true; }