How do I supply credentials to execute a query on a server that's part of another domain?

I am doing work for a client that has a server on his domain. My workstation is on my own domain. I typically VPN into the client network using my client domain username and password. The problem with the below query is that I get a 401 Unauthorized access error when I execute the query, presumably because the wrong credentials are being sent.

The client has suggested supplying my client domain credentials, perhaps wrapped in a #if DEBUG so that the code will work properly in development environments.

How do I supply credentials? The following code will be present in an ASP MVC 2 project.

        ClientContext clientContext = new ClientContext(URL);
        List list = clientContext.Web.Lists.GetByTitle("My Documents");

        CamlQuery camlQuery = new CamlQuery();
        camlQuery.ViewXml = XML;
        ListItemCollection listItems = list.开发者_运维知识库GetItems(camlQuery);
        clientContext.Load(
             listItems,
             items => items.Include(item => item["FileRef"]));

        clientContext.ExecuteQuery();

I prefer to do this programatically

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Is this all I need to do:

        System.Net.NetworkCredential cred = new System.Net.NetworkCredential("myname", "mypassword"); 
    ClientContext clientContext = new ClientContext(URL);

    clientContext.Credentials = cred;

I am still not getting success, but perhaps there are some other issues here.

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You could configure the Application Pool credential on the IIS, this way the "user" running the application has permission to access the other server.

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If the client account is already a valid user of the sharepoint site you just need to use the default credentials before downloading, like so..

WebClient Client=new WebClient();
Client.UseDefaultCredentials=true;
Client.DownloadFile(url, destination);