c# - 在 C# 中将 0 添加到 IP 地址

Question

我有一个 IP 地址：192.168.1.1. 但我想让它成为192168001001？我们该怎么做呢？

Answer 1

简单的：

var formattedIP = String.Concat("192.168.1.1".Split('.').Select(x => x.PadLeft(3, '0')));

Answer 2

对我来说，最干净的方法是这个：

直接回答：

//String version
string sIP = "192.168.1.1";
string sOut = "";

foreach(string sPart in sIP.Split('.')){
   sOut = string.format("{0}{1:000}", sOut, sPart);
}

//IPAddress version
IPAddress oIP = new IPAddress("192.168.1.1");
string sOut = oIP.GetAddressBytes.ToString();

请记住始终使用 IPAddress 类来解析/检查/操作 IP :)。因为您应该能够使用 IPv4 和 IPv6 地址！

http://msdn.microsoft.com/en-us/library/system.net.ipaddress.aspx

Answer 3

string sIp = "192.168.0.1";
StringBuilder sb = new StringBuilder();

sIp.Split('.').ToList().ForEach(u => sb.Append(u.ToString().PadLeft(3, '0')));

// sb.ToString(); contains the result

Answer 4

string input = "192.168.1.1";
string[] split = input.Split(new[] { '.' }, StringSplitOptions.None);

string result = string.Join(string.Empty, split.Select(s => s.PadLeft(3, '0')));

Answer 5

string str1 = "192.168.1.1";

string[] str = str1.Split('.');

for(int i = 0; i < str.Length; i++)
    str[i] = int.Parse(str[i]).ToString("000");

str1 = string.Join("", str);

现在str1包含"192168001001"

Answer 6

这样做：

string ip = "192.168.12.1";
StringBuilder stringBuilder = new StringBuilder();
string[] array = ip.Split('.');

foreach (string subsection in array)
{
      if (subsection.Length < 2)
             stringBuilder.Append("00" + subsection);
      else if (subsection.Length < 3)
             stringBuilder.Append("0" + subsection);
      else
             stringBuilder.Append(subsection);
}

Answer 7

试试这个

string FormatIP(string ip)
{
   string[] data = ip.Split('.');
   if (data.Length > 4)
      throw new Exception("Invalid IP address");
   List<string> finalIP = new List<string>();
   int intChunk;
   string temp;
   foreach (string chunk in data)
   {
       temp = chunk;
       if (temp.Length > 3 || int.TryParse(temp, out intChunk) == false || intChunk > 255)
           throw new Exception("Invalid IP address");
       while (temp.Length < 3)
           temp = "0" + temp;
       finalIP.Add(temp);
    }
    data = finalIP.ToArray();
    return string.Join(".", data);
}