Re: Dns.GetHostEntry functionality

The net view \\david-1 shows the no entries because I do not have any shares on david-1.

net view \\mainserver (the server) comes back with results since it does have shares.

"David" <david@xxxxxxxxxxx> wrote in message news:uVk0YmfhIHA.1204@xxxxxxxxxxxxxxxxxxxxxxx
I have many computers, one of which is the server.

I just tried new view \\david-1 on my david-2 vista laptop. It came back with "There are no entries in the list."

The Dns.GetHostEntry("david-1") code works fine on the laptop though. It returns the correct ip address of david-1.

"Paul G. Tobey [eMVP]" <p space tobey no spam AT no instrument no spam DOT com> wrote in message news:eN38mjfhIHA.1184@xxxxxxxxxxxxxxxxxxxxxxx
OK, you have a single PC at home? The Windows Server system? Or that machine is remote? If you have two PC-type machines, open a MS-DOS window on one of them and try to view the network information for the one whose name you're currently trying to resolve, using the machine name. For example,

net view \\david-1

If this works, that indicates to me that you have name resolution. That would point to a possible problem with the resolution capabilities on the device. If it does not work, that points to your name resolution system (PC problem).

If the former is the case and the device is indicated as the problem source, try renaming the machine whose name you are trying to resolve from "david-1" to something without that nasty - character like "david1". Does that work?

Paul T.

"David" <david@xxxxxxxxxxx> wrote in message news:01C7F6B3-14A7-446D-9DE2-0C52FF5612DD@xxxxxxxxxxxxxxxx
You are correct. www.microsoft.conm resolved fine. Now I really need to know how to resolve a computer name. I hope that someone can answer this.


"Paul G. Tobey [eMVP]" <p space tobey no spam AT no instrument no spam DOT com> wrote in message news:Of25$SfhIHA.200@xxxxxxxxxxxxxxxxxxxxxxx
I'm no Vista expert. Try resolving www.microsoft.com. I'm pretty sure that will work.

Paul T.

"David" <david@xxxxxxxxxxx> wrote in message news:1E71F8D9-2C94-4BC8-87B5-C736DD25FEBF@xxxxxxxxxxxxxxxx
If I substitute 10.0.0.20 for david-1, everything works fine. That is, the functionality of my app works to connect to the PC and retrieve data and send data. So this tells me that I have connectivity to the network. It is just that DNS seems not work work. Does Vista not use netbios names? I am pretty sure that it does.

"Paul G. Tobey [eMVP]" <p space tobey no spam AT no instrument no spam DOT com> wrote in message news:uhopxtehIHA.6136@xxxxxxxxxxxxxxxxxxxxxxx
The only thing that I can think of is that the name you're asking for is wrong (isn't the real device name), or that there's a bug in resolution for NetBIOS names with - characters in them. What sort of device are we talking about (it's not Windows Mobile, for example?)? Version of CE? Networking components built in?

Your code works fine on my device.

Paul T.

"David" <david@xxxxxxxxxxx> wrote in message news:B3DAB770-2D94-4BE6-8899-B0C51B61F484@xxxxxxxxxxxxxxxx
I have this code:

try
{
IPAddress[] addresses = Dns.GetHostEntry("david-1").AddressList;
foreach (IPAddress address in addresses)
{
if (address.AddressFamily == AddressFamily.InterNetwork)
{
m_strServeIP = address.ToString();
break;
}
}
}
catch (SocketException ex)
{
MessageBox.Show(ex.Message);
Close();
return;
}

A SocketException is thrown "No such host is known".

Yet, I know I have connectivity since I can browse the internet and I have a valid ip address and it can be pinged from the david-1 computer. My DHCP server is giving out dns and gateway information. Why does the GetHostEntry fail?














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    ... Windows Mobile name resolution to see if there is a setting. ... Paul T. ... shares on david-1. ... that indicates to me that you have name resolution. ...
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    ... "Paul G. Tobey " <p space tobey no spam AT no instrument no spam DOT ... That would point to a possible problem with the resolution capabilities on the device. ... I know I have connectivity since I can browse the internet and I have a valid ip address and it can be pinged from the david-1 computer. ...
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