从wcf客户端调用需要基本http身份验证的Web服务

<system.serviceModel>
  <bindings>
    <basicHttpBinding>
      <binding name="BasicHttpBinding_Service">
        <security mode="TransportCredentialOnly">
          <transport clientCredentialType="Basic" />
        </security>
      </binding>
    </basicHttpBinding>
  </bindings>
  <client>
    <endpoint address="http://example.com/Service.svc"
              binding="basicHttpBinding"
              bindingConfiguration="BasicHttpBinding_Service"
              contract="IService"
              name="BasicHttpBinding_IService" />
  </client>
</system.serviceModel>

ServiceClient client = new ServiceClient();
client.ClientCredentials.UserName.UserName = "username";
client.ClientCredentials.UserName.Password = "password";

string result = client.SomeMethod();