CredentialCache credentialCache = new CredentialCache();
// Create a new instance of NetworkCredential using the client
// credentials.
NetworkCredential credentials = new NetworkCredential("windows登录用户名", "登录密码");
// Add the NetworkCredential to the CredentialCache.
credentialCache.Add(new Uri(math.Url), "NTLM", credentials);
CredentialCache credentialCache = new CredentialCache();
// Create a new instance of NetworkCredential using the client
// credentials.
NetworkCredential credentials = new NetworkCredential("windows登录用户名", "登录密码");
// Add the NetworkCredential to the CredentialCache.
credentialCache.Add(new Uri(math.Url), "NTLM", credentials);