IP格式检查、IP -- INT 转换
public static bool CheckIPAddress(string IP)
{
string pattern = @"(((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))\.){3}((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))";
System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex(pattern);
if (regex.Match(IP).Success)
{
return true;
}
else
{
return false;
}
}
private static long IpToInt(string ip)
{
char[] separator = new char[] { '.' };
if (ip.Split(separator).Length == 3)
{
ip = ip + ".0";
}
string[] strArray = ip.Split(separator);
long num2 = ((long.Parse(strArray[0]) * 0x100L) * 0x100L) * 0x100L;
long num3 = (long.Parse(strArray[1]) * 0x100L) * 0x100L;
long num4 = long.Parse(strArray[2]) * 0x100L;
long num5 = long.Parse(strArray[3]);
return (((num2 + num3) + num4) + num5);
}
private static string IntToIP(long ip_Int)
{
long num = (long)((ip_Int & 0xff000000L) >> 0x18);
if (num < 0L)
{
num += 0x100L;
}
long num2 = (ip_Int & 0xff0000L) >> 0x10;
if (num2 < 0L)
{
num2 += 0x100L;
}
long num3 = (ip_Int & 0xff00L) >> 8;
if (num3 < 0L)
{
num3 += 0x100L;
}
long num4 = ip_Int & 0xffL;
if (num4 < 0L)
{
num4 += 0x100L;
}
return (num.ToString() + "." + num2.ToString() + "." + num3.ToString() + "." + num4.ToString());
}
{
string pattern = @"(((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))\.){3}((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))";
System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex(pattern);
if (regex.Match(IP).Success)
{
return true;
}
else
{
return false;
}
}
private static long IpToInt(string ip)
{
char[] separator = new char[] { '.' };
if (ip.Split(separator).Length == 3)
{
ip = ip + ".0";
}
string[] strArray = ip.Split(separator);
long num2 = ((long.Parse(strArray[0]) * 0x100L) * 0x100L) * 0x100L;
long num3 = (long.Parse(strArray[1]) * 0x100L) * 0x100L;
long num4 = long.Parse(strArray[2]) * 0x100L;
long num5 = long.Parse(strArray[3]);
return (((num2 + num3) + num4) + num5);
}
private static string IntToIP(long ip_Int)
{
long num = (long)((ip_Int & 0xff000000L) >> 0x18);
if (num < 0L)
{
num += 0x100L;
}
long num2 = (ip_Int & 0xff0000L) >> 0x10;
if (num2 < 0L)
{
num2 += 0x100L;
}
long num3 = (ip_Int & 0xff00L) >> 8;
if (num3 < 0L)
{
num3 += 0x100L;
}
long num4 = ip_Int & 0xffL;
if (num4 < 0L)
{
num4 += 0x100L;
}
return (num.ToString() + "." + num2.ToString() + "." + num3.ToString() + "." + num4.ToString());
}