如何运行code在WCF服务的构造函数只有一次当的 ServiceBehaviorAttribute.InstanceContextMode 设置为 PerSession ？

How can I run the code in the constructor of a WCF Service only once when the ServiceBehaviorAttribute.InstanceContextMode is set to PerSession?

[ServiceBehavior(
    InstanceContextMode = InstanceContextMode.PerSession, 
    ConcurrencyMode = ConcurrencyMode.Single)]
public class SomeService : ISomeService
{
    public SomeService()
    {
        this.RunThisOnceForAllClients();
    }

    private void RunThisOnceForAllClients() { }
}

或者，我怎么能在运行后自动WCF服务的方法运行，但它的只是将所有客户端上运行，一旦调用

请帮忙。先谢谢了。

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