{
long tmpIpNumber = 0;
if (strIpAddress != null && strIpAddress.Trim() != "")
{
string[] arrayIP = strIpAddress.Split('.');
long sip1 = long.Parse(arrayIP[0]);
long sip2 = long.Parse(arrayIP[1]);
long sip3 = long.Parse(arrayIP[2]);
long sip4 = long.Parse(arrayIP[3]);
tmpIpNumber = sip1 * 256 * 256 * 256 + sip2 * 256 * 256 + sip3 * 256 + sip4;
}
return tmpIpNumber;
}