private void GetPerAdapterInfo(uint index)
{
if (index != 0)
{
uint pOutBufLen = 0;
SafeLocalFree pPerAdapterInfo = null;
uint num2 = UnsafeNetInfoNativeMethods.GetPerAdapterInfo(index, SafeLocalFree.Zero, ref pOutBufLen);
while (num2 == 0x6f)
{
try
{
pPerAdapterInfo = SafeLocalFree.LocalAlloc((int)pOutBufLen);
num2 = UnsafeNetInfoNativeMethods.GetPerAdapterInfo(index, pPerAdapterInfo, ref pOutBufLen);
if (num2 == 0)
{
IpPerAdapterInfo info = (IpPerAdapterInfo)Marshal.PtrToStructure(pPerAdapterInfo.DangerousGetHandle(), typeof(IpPerAdapterInfo));
this.autoConfigEnabled = info.autoconfigEnabled;
this.autoConfigActive = info.autoconfigActive;
this.dnsAddresses = info.dnsServerList.ToIPAddressCollection();
}
continue;
}
finally
{
if (this.dnsAddresses == null)
{
this.dnsAddresses = new IPAddressCollection();
}
if (pPerAdapterInfo != null)
{
pPerAdapterInfo.Close();
}
}
}
if (this.dnsAddresses == null)
{
this.dnsAddresses = new IPAddressCollection();
}
if (num2 != 0)
{
throw new NetworkInformationException((int)num2);
}
}
}
private void GetPerAdapterInfo(uint index)
{
if (index != 0)
{
uint size = 0;
SafeLocalFree buffer = null;
uint result = UnsafeNetInfoNativeMethods.GetPerAdapterInfo(index, SafeLocalFree.Zero, ref size);
while (result == IpHelperErrors.ErrorBufferOverflow)
{
try {
//now we allocate the buffer and read the network parameters.
buffer = SafeLocalFree.LocalAlloc((int)size);
result = UnsafeNetInfoNativeMethods.GetPerAdapterInfo(index, buffer, ref size);
if (result == IpHelperErrors.Success)
{
IpPerAdapterInfo ipPerAdapterInfo = (IpPerAdapterInfo)Marshal.PtrToStructure(buffer.DangerousGetHandle(), typeof(IpPerAdapterInfo));
autoConfigEnabled = ipPerAdapterInfo.autoconfigEnabled;
autoConfigActive = ipPerAdapterInfo.autoconfigActive;
}
}
finally {
if (buffer != null)
{
buffer.Close();
}
}
}
if (result != IpHelperErrors.Success)
{
throw new NetworkInformationException((int)result);
}
}
}