wcf - ChannelFactory Credentials + 对象是只读的

Question

问候，当我尝试为我的工厂设置凭据时出现以下问题:

ChannelFactory<IWCFSeekService> factory = Factory;
if (factory != null)
{
    factory.Credentials.UserName.UserName = CServiceCredentials.Instance.Username;
    _Channel = factory.CreateChannel();
}

我得到一个对象是只读的异常。当我想设置用户名时会发生这种情况。

Answer 1

是的，MSDN documentation很清楚:

C#
public ClientCredentials Credentials { get; }

楼盘 仅限 有一个 get访问器 - 没有设置访问器 -> 它是只读的。

同样在 MSDN 文档中:

Remarks
The ClientCredentials object is stored as a type of endpoint behavior and can be accessed through the Behaviors property.

The OnOpened method initializes a read-only copy of the ClientCredentials object for the factory.

那你在这里做什么？？

更新:您无法设置客户端代理应该在 channel 工厂上使用的用户凭据。看到这个 excellent blog post关于如何做 - 有点绕道:

首先，从工厂中删除默认端点行为

其次，实例化您自己的凭据

第三，将这些新凭据设置为工厂的新端点行为

// step one - find and remove default endpoint behavior 
var defaultCredentials = factory.Endpoint.Behaviors.Find<ClientCredentials>();
factory.Endpoint.Behaviors.Remove(defaultCredentials); 

// step two - instantiate your credentials
ClientCredentials loginCredentials = new ClientCredentials();
loginCredentials.UserName.UserName = CServiceCredentials.Instance.Username;
loginCredentials.UserName.Password = “Password123″;

// step three - set that as new endpoint behavior on factory
factory.Endpoint.Behaviors.Add(loginCredentials); //add required ones

似乎有点奇怪和复杂，但这似乎是实现这一目标的唯一方法!