有关对字符串的处理，需要用到List时的简化写法

这是项目中的需要根据ComputerName来获取IP的一个方法，如果出现多个ComputerName，需要将多个ComputerName的字符串以“；”分开，传进方法中，然后再处理不同的Name,然后再获取不同Name的IP值，我原来的写法如下：

 private static string GetIPAddressFromMachineName(string machineNames)
         {
             if (machineNames.Trim().EndsWith(";"))
             {
                 machineNames = machineNames.Trim();
                 machineNames = machineNames.Remove(machineNames.LastIndexOf(';'), );
             }
             string result = "";
             string[] ipadresses;
             try
             {
                 #region old
                 string[] machineName = machineNames.Split(';');
                 ipadresses = new string[machineName.Length];
                 for (int i = ; i < machineName.Length; i++)
                 {
                     if (machineName[i].Trim() != "")
                     {
                         IPHostEntry ipHose = Dns.GetHostEntry(machineName[i].Trim());
                         if (ipHose.AddressList[].AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                         {
                             ipadresses[i] = ipHose.AddressList[].ToString();
                         }
                         else if (ipHose.AddressList[].AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
                         {
                             ipadresses[i] = ipHose.AddressList[].ToString();
                         }
                     }
                 }
                 result = String.Join(",", ipadresses);
                 #endregion
             }

             catch (Exception)
             {
                 result = "Error";
             }

             return result;
         }

Old

我们头儿给的建议写法如下：

 private static string GetIPAddressFromMachineName(string machineNames)
         {
             if (machineNames.Trim().EndsWith(";"))
             {
                 machineNames = machineNames.Trim();
                 machineNames = machineNames.Remove(machineNames.LastIndexOf(';'), );
             }
             string result = "";
             try
             {
                 #region new
                 foreach (string machineName in machineNames.Split(";".ToArray()).ToList())
                 {
                     if (machineName.Trim() != "")
                     {
                         IPHostEntry ipHose = Dns.GetHostEntry(machineName.Trim());
                         if (ipHose.AddressList[].AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                         {
                             result += "," + ipHose.AddressList[].ToString();
                         }
                         else if(ipHose.AddressList[].AddressFamily==System.Net.Sockets.AddressFamily.InterNetworkV6)
                         {
                             result += "," + ipHose.AddressList[].ToString();
                         }
                     }
                 }
                 if (result.StartsWith(","))
                 {
                     result = result.Remove(, );
                 }
                 #endregion
             }

             catch (Exception)
             {
                 result = "Error";
             }

             return result;
         }

New

记录每一次的成长~~~