c#如何将一个用户输入的ip地址，转换成32位有符号整数

Question

c#如何将一个用户输入的ip地址，转换成32位有符号整数就好像转换成这样， 谢谢！
0x3c, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 

Answer 1

System.Net.IPAddress .Parse("").Address 

Answer 2

private void button2_Click(object sender, EventArgs e)
        {
            IPAddress test = IPAddress.Parse("127.0.0.1");
            String[] result = new string[4];
            result = test.ToString().Split('.');
            string final = str2hex(result, 4);
            MessageBox.Show(final);
        }
        public String int2hex(uint src)
        {
            String result = "";
            if (src < 10)
            {
                result = src.ToString();
            }
            else
            {
                switch (src)
                {
                    case 10:
                        result = "A";
                        break;
                    case 11:
                        result = "B";
                        break;
                    case 12:
                        result = "C";
                        break;
                    case 13:
                        result = "D";
                        break;
                    case 14:
                        result = "E";
                        break;
                    case 15:
                        result = "F";
                        break;
                }
            }
            return result;
        }
        public string str2hex(string[] source, int num)
        {
            string temp;
            string result = "";
            for (int str2hexcount = 0; str2hexcount < num; str2hexcount++)
            {
                String valuetemp = "0x";
                temp = source[str2hexcount];
                uint value = Convert.ToUInt32(temp);
                if (value > 255)
                {
                    MessageBox.Show("超出范围");
                }
                else
                {
                    uint b = value / 16 % 16;
                    valuetemp = valuetemp + int2hex(b);
                    uint a = value % 16;
                    valuetemp = valuetemp + int2hex(a) + ";";
                    source[str2hexcount] = valuetemp;
                }            }
            for (int i = 0; i < num; i++)
            {
                result = result + source[i];
            }
            return result;
        }

Answer 3

转换的是127.0.0.1，方法写在按钮事件那个函数里面，有两个子函数str2hex和int2hex

Answer 4

 我是想把ip地址转换成 0x00, 0x00, 0x03 形式的数组存放到 注册表中的， 这是string格式，应该如何直接得到 byte[] 数组呢？？

Answer 5

对于每一个相应的uint，左移8位并且与下一个数字|操作。

Answer 6

  IPAddress ip = IPAddress.Parse("127.0.0.1");
 UInt64 longIP = BitConverter.ToUInt64(ip.GetAddressBytes(), 0);