#获取本机IP地址时排除IPv6类型，只返回IPv4地址的方法

public static string GetLocalIP()
{
try
{
string HostName = Dns.GetHostName(); //得到主机名
IPHostEntry IpEntry = Dns.GetHostEntry(HostName);
for (int i=0; i < IpEntry.AddressList.Length; i++)
{
//从IP地址列表中筛选出IPv4类型的IP地址
//AddressFamily.InterNetwork表示此IP为IPv4,
//AddressFamily.InterNetworkV6表示此地址为IPv6类型
if (IpEntry.AddressList[i].AddressFamily == AddressFamily.InterNetwork)
{
return IpEntry.AddressList[i].ToString();
}
}
return "";
}
catch (Exception ex)
{
MessageBox.Show("获取本机IP出错:"+ex.Message);
return "";
}
}