CallContext 是类似于方法调用的线程本地存储区的专用集合对象，并提供对每个逻辑执行线程都唯一的数据槽。
使用该功能，存储对象必须实现ILogicalThreadAffinative接口

1.定义接口

[Serializable]public class LogSettings: ILogicalThreadAffinative{public bool EnableLog;}

2.客户端设置一个对象

static void Main(string[] args){String filename = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;RemotingConfiguration.Configure(filename);if (args.Length > 0 && args[0].ToLower() == "/enablelog"){LogSettings ls = new LogSettings();ls.EnableLog = true;CallContext.SetData("log_settings", ls);}IRemoteCustomerManager mgr = (IRemoteCustomerManager) RemotingHelper.CreateProxy(typeof(IRemoteCustomerManager));Customer cust = mgr.GetCustomer(42);Console.WriteLine("Done");Console.ReadLine();}    

3.服务器端接收对象

根据key获取对象，然后判断属性

class CustomerManager: MarshalByRefObject, IRemoteCustomerManager{public Customer GetCustomer(int id){LogSettings ls = CallContext.GetData("log_settings") as LogSettings;if (ls!= null && ls.EnableLog){// simulate write to a logfile Console.WriteLine("LOG: Loading Customer " + id);}Customer cust = new Customer();return cust;}}class ServerStartup{static void Main(string[] args){String filename = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;RemotingConfiguration.Configure(filename);Console.WriteLine ("ServerStartup.Main(): Server started");Console.ReadLine();}}

4.将客户端和服务器端上下文数据操作进行封装

因为上下文数据可以在客户端和服务器端同时交互，所以可以进行封装，而无需让客户端和服务器端知道细节

4.1 定义LogSettingContext类

public class LogSettingContext{public static bool EnableLog{get{LogSettings ls = CallContext.GetData("log_settings") as LogSettings;if (ls!= null){return ls.EnableLog;}else{return false;}}set{LogSettings ls = new LogSettings();ls.EnableLog = value;CallContext.SetData("log_settings", ls);}}}

4.2 前端调用

LogSettingContext.EnableLog=true;

4.3后端调用

if (LogSettingContext.EnableLog){// simulate write to a logfile Console.WriteLine("LOG: Loading Customer " + id);}

如此便简化了操作