像Sandrino提到的，我不需要基本验证得到的授权和认证使用自定义的用户名和密码。

Like Sandrino mentioned, I don't need basicauth to get authorization and authentication with a custom username and password.

而不是：

<security mode="Transport">
<transport clientCredentialType="Basic"/>
</security>

我不得不这样做：

I had to do:

  <security mode="TransportWithMessageCredential">
    <transport clientCredentialType="None"/>
    <message clientCredentialType="UserName" />
  </security>

在客户端：

    ServiceReference1.CvServiceInterfaceClient cl = new ServiceReference1.CvServiceInterfaceClient();
    ClientCredentials creds = new ClientCredentials();

    creds.UserName.UserName = "username";
    creds.UserName.Password = "password";
    var defaultCredentials = cl.Endpoint.Behaviors.Find<ClientCredentials>();
    cl.Endpoint.Behaviors.Remove(defaultCredentials);
    cl.Endpoint.Behaviors.Add(creds);

吉荣