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  • Async Concurrent Queue 20120429 add stop Threads

    
    namespace Test
    {
        using System;
        using System.Threading;
        using System.Threading.Tasks;
        using Microshaoft;
        class Program
        {
            static void Main()
            {
                var q = new ConcurrentAsyncQueue<int>();
                q.AttachPerformanceCounters("new");
                Random random = new Random();
                q.OnDequeue += new ConcurrentAsyncQueue<int>.QueueEventHandler
                                                        (
                                                            (x) =>
                                                                {
                                                                    int sleep = random.Next(0, 4) * 500;
                                                                    Thread.Sleep(sleep);
                                                                    //Console.WriteLine(x);
                                                                }
                                                        );
                q.OnException += new ConcurrentAsyncQueue<int>.ExceptionEventHandler
                                                                        (
                                                                            (x) =>
                                                                                {
                                                                                    Console.WriteLine(x.ToString());
                                                                                }
                                                                        );
                Console.WriteLine("begin ...");
                //q.StartAdd(10);
                string r = string.Empty;
                while ((r = Console.ReadLine()) != "q")
                {
                    int i;
                    if (int.TryParse(r, out i))
                    {
                        Console.WriteLine("Parallel Enqueue {0} begin ...", i);
                        new Thread
                                (
                                    new ParameterizedThreadStart
                                                (
                                                    (x) =>
                                                        {
                                                            Parallel.For
                                                                        (
                                                                            0
                                                                            , i
                                                                            , (xx) =>
                                                                            {
                                                                                q.Enqueue(xx);
                                                                            }
                                                                        );
                                                            Console.WriteLine("Parallel Enqueue {0} end ...", i);
                                                        }
                                                )
                                ).Start();
                    }
                    else if (r.ToLower() == "stop")
                    {
                        q.StartStop(10);
                    }
                    else if (r.ToLower() == "add")
                    {
                        q.StartAdd(20);
                    }
                    //else if (r.ToLower() == "count")
                    //{
                    //    q.EnablePerformanceCountersCount = true;
                    //}
                    //else if (r.ToLower() == "uncount")
                    //{
                    //    q.EnablePerformanceCountersCount = false;
                    //}
                    else
                    {
                        Console.WriteLine("please input Number!");
                    }
                }
            }
        }
    }
    namespace Microshaoft
    {
        using System;
        using System.Threading;
        using System.Diagnostics;
        using System.Linq;
        using System.Collections.Generic;
        using System.Collections.Concurrent;
        using System.Threading.Tasks;
        using System.Reflection;
        using Microshaoft;
        public class ConcurrentAsyncQueue<T>
        {
            public delegate void QueueEventHandler(T element);
            public event QueueEventHandler OnDequeue;
            public delegate void QueueLogEventHandler(string logMessage);
            public QueueLogEventHandler
                                    OnQueueLog
                                    , OnDequeueThreadStart
                                    , OnDequeueThreadEnd;
            public delegate void ExceptionEventHandler(Exception exception);
            public event ExceptionEventHandler OnException;
            private ConcurrentQueue<T> _queue = new ConcurrentQueue<T>();
            private ConcurrentQueue<Action> _callbackProcessBreaksActions;
            private long _concurrentDequeueThreadsCount = 0; //Microshaoft 用于控制并发线程数
            private ConcurrentQueue<ThreadProcessor> _dequeueThreadsProcessorsPool;
            private int _dequeueIdleSleepSeconds = 10;
            public int DequeueIdleSleepSeconds
            {
                set
                {
                    _dequeueIdleSleepSeconds = value;
                }
                get
                {
                    return _dequeueIdleSleepSeconds;
                }
            }
            private PerformanceCounter _enqueuePerformanceCounter;
            public PerformanceCounter EnqueuePerformanceCounter
            {
                private set
                {
                    Interlocked.Exchange<PerformanceCounter>(ref _enqueuePerformanceCounter, value);
                }
                get
                {
                    return _enqueuePerformanceCounter;
                }
            }
            private PerformanceCounter _dequeuePerformanceCounter;
            public PerformanceCounter DequeuePerformanceCounter
            {
                private set
                {
                    Interlocked.Exchange<PerformanceCounter>(ref _dequeuePerformanceCounter, value);
                }
                get
                {
                    return _dequeuePerformanceCounter;
                }
            }
            private PerformanceCounter _dequeueProcessedPerformanceCounter;
            public PerformanceCounter DequeueProcessedPerformanceCounter
            {
                private set
                {
                    Interlocked.Exchange<PerformanceCounter>(ref _dequeueProcessedPerformanceCounter, value);
                }
                get
                {
                    return _dequeueProcessedPerformanceCounter;
                }
            }
            private PerformanceCounter _queueLengthPerformanceCounter;
            public PerformanceCounter QueueLengthPerformanceCounter
            {
                private set
                {
                    Interlocked.Exchange<PerformanceCounter>(ref _queueLengthPerformanceCounter, value);
                }
                get
                {
                    return _queueLengthPerformanceCounter;
                }
            }
            private PerformanceCounter _dequeueThreadStartPerformanceCounter;
            public PerformanceCounter DequeueThreadStartPerformanceCounter
            {
                private set
                {
                    Interlocked.Exchange<PerformanceCounter>(ref _dequeueThreadStartPerformanceCounter, value);
                }
                get
                {
                    return _dequeueThreadStartPerformanceCounter;
                }
            }
            private PerformanceCounter _dequeueThreadEndPerformanceCounter;
            public PerformanceCounter DequeueThreadEndPerformanceCounter
            {
                private set
                {
                    Interlocked.Exchange<PerformanceCounter>(ref _dequeueThreadEndPerformanceCounter, value);
                }
                get
                {
                    return _dequeueThreadEndPerformanceCounter;
                }
            }
            private PerformanceCounter _dequeueThreadsCountPerformanceCounter;
            public PerformanceCounter DequeueThreadsCountPerformanceCounter
            {
                private set
                {
                    Interlocked.Exchange<PerformanceCounter>(ref _dequeueThreadsCountPerformanceCounter, value);
                }
                get
                {
                    return _dequeueThreadsCountPerformanceCounter;
                }
            }
            private bool _isAttachedPerformanceCounters = false;
            private class ThreadProcessor
            {
                public bool Break
                {
                    set;
                    get;
                }
                public EventWaitHandle Wait
                {
                    private set;
                    get;
                }
                public ConcurrentAsyncQueue<T> Sender
                {
                    private set;
                    get;
                }
                public void StopOne()
                {
                    Break = true;
                }
                public ThreadProcessor
                                (
                                    ConcurrentAsyncQueue<T> queue
                                    , EventWaitHandle wait
                                )
                {
                    Wait = wait;
                    Sender = queue;
                }
                public void ThreadProcess()
                {
                    Interlocked.Increment(ref Sender._concurrentDequeueThreadsCount);
                    if (Sender._isAttachedPerformanceCounters)
                    {
                        Sender.DequeueThreadStartPerformanceCounter.Increment();
                        Sender.DequeueThreadsCountPerformanceCounter.Increment();
                    }
                    long r = 0;
                    try
                    {
                        if (Sender.OnDequeueThreadStart != null)
                        {
                            r = Interlocked.Read(ref Sender._concurrentDequeueThreadsCount);
                            Sender.OnDequeueThreadStart
                                            (
                                                string.Format
                                                        (
                                                            "{0} Threads Count {1},Queue Count {2},Current Thread: {3} at {4}"
                                                            , "Threads ++ !"
                                                            , r
                                                            , Sender._queue.Count
                                                            , Thread.CurrentThread.Name
                                                            , DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fffff")
                                                        )
                                            );
                        }
                        while (true)
                        {
                            #region while true
                            if (Break)
                            {
                                break;
                            }
                            while (!Sender._queue.IsEmpty)
                            {
                                #region while queue.IsEmpty
                                if (Break)
                                {
                                    break;
                                }
                                T element;
                                if (Sender._queue.TryDequeue(out element))
                                {
                                    if (Sender._isAttachedPerformanceCounters)
                                    {
                                        Sender.DequeuePerformanceCounter.Increment();
                                        Sender.QueueLengthPerformanceCounter.Decrement();
                                    }
                                    if (Sender.OnDequeue != null)
                                    {
                                        Sender.OnDequeue(element);
                                    }
                                    if (Sender._isAttachedPerformanceCounters)
                                    {
                                        Sender.DequeueProcessedPerformanceCounter.Increment();
                                    }
                                }
                                #endregion while queue.IsEmpty
                            }
                            #region wait
                            Sender._dequeueThreadsProcessorsPool.Enqueue(this);
                            if (Break)
                            {
                            }
                            if (!Wait.WaitOne(Sender.DequeueIdleSleepSeconds * 1000))
                            {
                            }
                            #endregion wait
                            #endregion while 1 == 1
                        }
                    }
                    catch (Exception e)
                    {
                        if (Sender.OnException != null)
                        {
                            Sender.OnException(e);
                        }
                    }
                    finally
                    {
                        r = Interlocked.Decrement(ref Sender._concurrentDequeueThreadsCount);
                        if (r < 0)
                        {
                            Interlocked.Exchange(ref Sender._concurrentDequeueThreadsCount, 0);
                            if (Sender._isAttachedPerformanceCounters)
                            {
                                if (Sender.DequeueThreadsCountPerformanceCounter.RawValue < 0)
                                {
                                    Sender.DequeueThreadsCountPerformanceCounter.RawValue = Sender._concurrentDequeueThreadsCount;
                                }
                            }
                        }
                        if (Sender.OnDequeueThreadEnd != null)
                        {
                            Sender.OnDequeueThreadEnd
                                        (
                                            string.Format
                                                    (
                                                        "{0} Threads Count {1},Queue Count {2},Current Thread: {3} at {4}"
                                                        , "Threads--"
                                                        , r
                                                        , Sender._queue.Count
                                                        , Thread.CurrentThread.Name
                                                        , DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fffff")
                                                    )
                                        );
                        }
                        if (Sender._isAttachedPerformanceCounters)
                        {
                            Sender.DequeueThreadEndPerformanceCounter.Increment();
                            Sender.DequeueThreadsCountPerformanceCounter.Decrement();
                        }
                        if (!Break)
                        {
                            Sender.StartAdd(1);
                        }
                        Break = false;
                    }
                }
            }
            public void AttachPerformanceCounters(string instanceNamePrefix)
            {
                var category = "Microshaoft AsyncConurrentQueue Counters";
                var process = Process.GetCurrentProcess();
                var processName = process.ProcessName;
                var instanceName = string.Format
                                        (
                                            "{0}-{1}"
                                            , instanceNamePrefix
                                            , processName
                    //, processID
                    //, processStartTime.ToString("yyyy-MM-dd HH:mm:ss.fff")
                                        );
                var type = this.GetType();
                PerformanceCountersHelper.AttachPerformanceCountersToProperties<ConcurrentAsyncQueue<T>>(instanceName, category, this);
                _isAttachedPerformanceCounters = true;
            }
            public int Count
            {
                get
                {
                    return _queue.Count;
                }
            }
            public long ConcurrentThreadsCount
            {
                get
                {
                    return _concurrentDequeueThreadsCount;
                }
            }
            private void Stop(int count)
            {
                Action action;
                for (var i = 0; i < count; i++)
                {
                    if (_callbackProcessBreaksActions.TryDequeue(out action))
                    {
                        action();
                    }
                }
            }
            public void StartStop(int count)
            {
                new Thread
                        (
                            new ThreadStart
                                    (
                                        () =>
                                            {
                                                Stop(count);
                                            }
                                    )
                        ).Start();
            }
            public void StartAdd(int count)
            {
                new Thread
                        (
                            new ThreadStart
                                    (
                                        () =>
                                            {
                                                Add(count);
                                            }
                                    )
                        ).Start();
            }
            private void Add(int count)
            {
                for (int i = 0; i < count; i++)
                {
                    Interlocked.Increment(ref _concurrentDequeueThreadsCount);
                    if (_dequeueThreadsProcessorsPool == null)
                    {
                        _dequeueThreadsProcessorsPool = new ConcurrentQueue<ThreadProcessor>();
                    }
                    var processor = new ThreadProcessor
                                                    (
                                                        this
                                                        , new AutoResetEvent(false)
                                                    );
                    var thread = new Thread
                                        (
                                            new ThreadStart
                                                        (
                                                            processor.ThreadProcess
                                                        )
                                        );
                    if (_callbackProcessBreaksActions == null)
                    {
                        _callbackProcessBreaksActions = new ConcurrentQueue<Action>();
                    }
                    var callbackProcessBreakAction = new Action
                                                    (
                                                        processor.StopOne
                                                    );
                    _callbackProcessBreaksActions.Enqueue(callbackProcessBreakAction);
                    _dequeueThreadsProcessorsPool.Enqueue(processor);
                    thread.Start();
                }
            }
            public void Enqueue(T element)
            {
                try
                {
                    _queue.Enqueue(element);
                    if (_isAttachedPerformanceCounters)
                    {
                        EnqueuePerformanceCounter.Increment();
                        QueueLengthPerformanceCounter.Increment();
                    }
                    if
                        (
                            _dequeueThreadsProcessorsPool != null
                            && !_dequeueThreadsProcessorsPool.IsEmpty
                        )
                    {
                        ThreadProcessor processor;
                        if (_dequeueThreadsProcessorsPool.TryDequeue(out processor))
                        {
                            processor.Wait.Set();
                        }
                    }
                }
                catch (Exception e)
                {
                    if (OnException != null)
                    {
                        OnException(e);
                    }
                }
            }
        }
    }
    namespace Microshaoft
    {
        using System;
        using System.Linq;
        using System.Diagnostics;
        using System.Reflection;
        using System.Collections.Generic;
        public static class PerformanceCountersHelper
        {
            public static void AttachPerformanceCountersToProperties<T>
                                        (
                                            string performanceCounterInstanceName
                                            , string category
                                            , T target = default(T)
                                        )
            {
                var type = typeof(T);
                var propertiesList = type.GetProperties().ToList();
                propertiesList = propertiesList.Where
                                                    (
                                                        (pi) =>
                                                        {
                                                            return (pi.PropertyType == typeof(PerformanceCounter));
                                                        }
                                                    ).ToList();
                if (PerformanceCounterCategory.Exists(category))
                {
                    propertiesList.ForEach
                                        (
                                            (pi) =>
                                            {
                                                if (PerformanceCounterCategory.CounterExists(pi.Name, category))
                                                {
                                                    if (PerformanceCounterCategory.InstanceExists(performanceCounterInstanceName, category))
                                                    {
                                                        //var pc = new PerformanceCounter(category, pi.Name, instanceName, false);
                                                        //pc.InstanceName = instanceName;
                                                        //pc.RemoveInstance();
                                                    }
                                                }
                                            }
                                        );
                    PerformanceCounterCategory.Delete(category);
                }
                var ccdc = new CounterCreationDataCollection();
                propertiesList.ForEach
                                (
                                    (pi) =>
                                        {
                                            var propertyName = pi.Name;
                                            var ccd = PerformanceCounterHelper.GetCounterCreationData
                                            (
                                                propertyName
                                                , PerformanceCounterType.NumberOfItems64
                                            );
                                            ccdc.Add(ccd);
                                        }
                                );
                PerformanceCounterCategory.Create
                                (
                                    category,
                                    string.Format("{0} Category Help.", category),
                                    PerformanceCounterCategoryType.MultiInstance,
                                    ccdc
                                );
                propertiesList.ForEach
                                (
                                    (pi) =>
                                    {
                                        var propertyName = pi.Name;
                                        var pc = new PerformanceCounter()
                                        {
                                            CategoryName = category
                                            , CounterName = propertyName
                                            , InstanceLifetime = PerformanceCounterInstanceLifetime.Process
                                            , InstanceName = performanceCounterInstanceName
                                            , ReadOnly = false
                                            , RawValue = 0
                                        };
                                        if (pi.GetGetMethod().IsStatic)
                                        {
                                            var setter = DynamicPropertyAccessor.CreateSetStaticPropertyValueAction<PerformanceCounter>(type, propertyName);
                                            setter(pc);
                                        }
                                        else
                                        {
                                            if (target != null)
                                            {
                                                var setter = DynamicPropertyAccessor.CreateSetPropertyValueAction<PerformanceCounter>(type, propertyName);
                                                setter(target, pc);
                                            }
                                        }
                                    }
                                );
            }
        }
    }
    namespace Microshaoft
    {
        using System;
        using System.Diagnostics;
        public static class PerformanceCounterHelper
        {
            public static CounterCreationData GetCounterCreationData(string counterName, PerformanceCounterType performanceCounterType)
            {
                return new CounterCreationData()
                {
                    CounterName = counterName
                    , CounterHelp = string.Format("{0} Help", counterName)
                    , CounterType = performanceCounterType
                };
            }
        }
    }
    namespace Microshaoft
    {
        using System;
        using System.Reflection;
        using System.Linq;
        using System.Linq.Expressions;
        public class DynamicPropertyAccessor
        {
            public static Func<object, object> CreateGetPropertyValueFunc(string typeName, string propertyName, bool isTypeFromAssembly = false)
            {
                Type type;
                if (isTypeFromAssembly)
                {
                    var assembly = AppDomain.CurrentDomain.GetAssemblies().First
                                                                    (
                                                                        (a) =>
                                                                            {
                                                                                return a.GetTypes().Any
                                                                                                    (
                                                                                                        (t) =>
                                                                                                            {
                                                                                                                return (t.FullName == typeName);
                                                                                                            }
                                                                                                    );
                                                                            }
                                                                    );
                    type = assembly.GetType(typeName);
                }
                else
                {
                    type = Type.GetType(typeName);
                }
                return CreateGetPropertyValueFunc(type, propertyName);
            }
            public static Func<object, object> CreateGetPropertyValueFunc(Type type, string propertyName)
            {
                var target = Expression.Parameter(typeof(object));
                var castTarget = Expression.Convert(target, type);
                var getPropertyValue = Expression.Property(castTarget, propertyName);
                var castPropertyValue = Expression.Convert(getPropertyValue, typeof(object));
                var lambda = Expression.Lambda<Func<object, object>>(castPropertyValue, target);
                return lambda.Compile();
            }
            public static Func<object, TProperty> CreateGetPropertyValueFunc<TProperty>(string typeName, string propertyName, bool isTypeFromAssembly = false)
            {
                Type type;
                if (isTypeFromAssembly)
                {
                    var assembly = AppDomain.CurrentDomain.GetAssemblies().First
                                                                    (
                                                                        (a) =>
                                                                            {
                                                                                return a.GetTypes().Any
                                                                                                    (
                                                                                                        (t) =>
                                                                                                            {
                                                                                                                return (t.FullName == typeName);
                                                                                                            }
                                                                                                    );
                                                                            }
                                                                    );
                    type = assembly.GetType(typeName);
                }
                else
                {
                    type = Type.GetType(typeName);
                }
                return CreateGetPropertyValueFunc<TProperty>(type, propertyName);
            }
            public static Func<object, TProperty> CreateGetPropertyValueFunc<TProperty>(Type type, string propertyName)
            {
                var target = Expression.Parameter(typeof(object));
                var castTarget = Expression.Convert(target, type);
                var getPropertyValue = Expression.Property(castTarget, propertyName);
                var lambda = Expression.Lambda<Func<object, TProperty>>(getPropertyValue, target);
                return lambda.Compile();
            }
            public static Func<TProperty> CreateGetStaticPropertyValueFunc<TProperty>(string typeName, string propertyName, bool isTypeFromAssembly = false)
            {
                Type type;
                if (isTypeFromAssembly)
                {
                    var assembly = AppDomain.CurrentDomain.GetAssemblies().First
                                                                    (
                                                                        (a) =>
                                                                            {
                                                                                return a.GetTypes().Any
                                                                                                    (
                                                                                                        (t) =>
                                                                                                            {
                                                                                                                return (t.FullName == typeName);
                                                                                                            }
                                                                                                    );
                                                                            }
                                                                    );
                    type = assembly.GetType(typeName);
                }
                else
                {
                    type = Type.GetType(typeName);
                }
                return CreateGetStaticPropertyValueFunc<TProperty>(type, propertyName);
            }
            public static Func<TProperty> CreateGetStaticPropertyValueFunc<TProperty>(Type type, string propertyName)
            {
                var property = type.GetProperty(propertyName, typeof(TProperty));
                var getPropertyValue = Expression.Property(null, property);
                var lambda = Expression.Lambda<Func<TProperty>>(getPropertyValue, null);
                return lambda.Compile();
            }
            public static Func<object> CreateGetStaticPropertyValueFunc(Type type, string propertyName)
            {
                var property = type.GetProperty(propertyName);
                var getPropertyValue = Expression.Property(null, property);
                var castPropertyValue = Expression.Convert(getPropertyValue, typeof(object));
                var lambda = Expression.Lambda<Func<object>>(castPropertyValue, null);
                return lambda.Compile();
            }
            public static Func<object> CreateGetStaticPropertyValueFunc(string typeName, string propertyName, bool isTypeFromAssembly = false)
            {
                Type type;
                if (isTypeFromAssembly)
                {
                    var assembly = AppDomain.CurrentDomain.GetAssemblies().First
                                                                    (
                                                                        (a) =>
                                                                            {
                                                                                return a.GetTypes().Any
                                                                                                    (
                                                                                                        (t) =>
                                                                                                            {
                                                                                                                return (t.FullName == typeName);
                                                                                                            }
                                                                                                    );
                                                                            }
                                                                    );
                    type = assembly.GetType(typeName);
                }
                else
                {
                    type = Type.GetType(typeName);
                }
                return CreateGetStaticPropertyValueFunc(type, propertyName);
            }
            public static Action<object, object> CreateSetPropertyValueAction(Type type, string propertyName)
            {
                var property = type.GetProperty(propertyName);
                var target = Expression.Parameter(typeof(object));
                var propertyValue = Expression.Parameter(typeof(object));
                var castTarget = Expression.Convert(target, type);
                var castPropertyValue = Expression.Convert(propertyValue, property.PropertyType);
                var getSetMethod = property.GetSetMethod();
                if (getSetMethod == null)
                {
                    getSetMethod = property.GetSetMethod(true);
                }
                var call = Expression.Call(castTarget, getSetMethod, castPropertyValue);
                var lambda = Expression.Lambda<Action<object, object>>(call, target, propertyValue);
                return lambda.Compile();
            }
            public static Action<object, object> CreateSetPropertyValueAction(string typeName, string propertyName, bool isTypeFromAssembly = false)
            {
                Type type;
                if (isTypeFromAssembly)
                {
                    var assembly = AppDomain.CurrentDomain.GetAssemblies().First
                                                                    (
                                                                        (a) =>
                                                                            {
                                                                                return a.GetTypes().Any
                                                                                                    (
                                                                                                        (t) =>
                                                                                                            {
                                                                                                                return (t.FullName == typeName);
                                                                                                            }
                                                                                                    );
                                                                            }
                                                                    );
                    type = assembly.GetType(typeName);
                }
                else
                {
                    type = Type.GetType(typeName);
                }
                return CreateSetPropertyValueAction(type, propertyName);
            }
            public static Action<object, TProperty> CreateSetPropertyValueAction<TProperty>(Type type, string propertyName)
            {
                var property = type.GetProperty(propertyName);
                var target = Expression.Parameter(typeof(object));
                var propertyValue = Expression.Parameter(typeof(TProperty));
                var castTarget = Expression.Convert(target, type);
                var castPropertyValue = Expression.Convert(propertyValue, property.PropertyType);
                var getSetMethod = property.GetSetMethod();
                if (getSetMethod == null)
                {
                    getSetMethod = property.GetSetMethod(true);
                }
                var call = Expression.Call(castTarget, getSetMethod, castPropertyValue);
                return Expression.Lambda<Action<object, TProperty>>(call, target, propertyValue).Compile();
            }
            public static Action<object, TProperty> CreateSetPropertyValueAction<TProperty>(string typeName, string propertyName, bool isTypeFromAssembly = false)
            {
                Type type;
                if (isTypeFromAssembly)
                {
                    var assembly = AppDomain.CurrentDomain.GetAssemblies().First
                                                                    (
                                                                        (a) =>
                                                                            {
                                                                                return a.GetTypes().Any
                                                                                                    (
                                                                                                        (t) =>
                                                                                                            {
                                                                                                                return (t.FullName == typeName);
                                                                                                            }
                                                                                                    );
                                                                            }
                                                                    );
                    type = assembly.GetType(typeName);
                }
                else
                {
                    type = Type.GetType(typeName);
                }
                return CreateSetPropertyValueAction<TProperty>(type, propertyName);
            }
            public static Action<object> CreateSetStaticPropertyValueAction(Type type, string propertyName)
            {
                var property = type.GetProperty(propertyName);
                var propertyValue = Expression.Parameter(typeof(object));
                var castPropertyValue = Expression.Convert(propertyValue, property.PropertyType);
                var getSetMethod = property.GetSetMethod();
                if (getSetMethod == null)
                {
                    getSetMethod = property.GetSetMethod(true);
                }
                var call = Expression.Call(null, getSetMethod, castPropertyValue);
                var lambda = Expression.Lambda<Action<object>>(call, propertyValue);
                return lambda.Compile();
            }
            public static Action<object> CreateSetStaticPropertyValueAction(string typeName, string propertyName, bool isTypeFromAssembly = false)
            {
                Type type;
                if (isTypeFromAssembly)
                {
                    var assembly = AppDomain.CurrentDomain.GetAssemblies().First
                                                                    (
                                                                        (a) =>
                                                                            {
                                                                                return a.GetTypes().Any
                                                                                                    (
                                                                                                        (t) =>
                                                                                                            {
                                                                                                                return (t.FullName == typeName);
                                                                                                            }
                                                                                                    );
                                                                            }
                                                                    );
                    type = assembly.GetType(typeName);
                }
                else
                {
                    type = Type.GetType(typeName);
                }
                return CreateSetStaticPropertyValueAction(type, propertyName);
            }
            public static Action<TProperty> CreateSetStaticPropertyValueAction<TProperty>(Type type, string propertyName)
            {
                var property = type.GetProperty(propertyName);
                var propertyValue = Expression.Parameter(typeof(TProperty));
                //var castPropertyValue = Expression.Convert(propertyValue, property.PropertyType);
                var getSetMethod = property.GetSetMethod();
                if (getSetMethod == null)
                {
                    getSetMethod = property.GetSetMethod(true);
                }
                var call = Expression.Call(null, getSetMethod, propertyValue);
                var lambda = Expression.Lambda<Action<TProperty>>(call, propertyValue);
                return lambda.Compile();
            }
            public static Action<TProperty> CreateSetStaticPropertyValueAction<TProperty>(string typeName, string propertyName, bool isTypeFromAssembly = false)
            {
                Type type;
                if (isTypeFromAssembly)
                {
                    var assembly = AppDomain.CurrentDomain.GetAssemblies().First
                                                                    (
                                                                        (a) =>
                                                                            {
                                                                                return a.GetTypes().Any
                                                                                                    (
                                                                                                        (t) =>
                                                                                                            {
                                                                                                                return (t.FullName == typeName);
                                                                                                            }
                                                                                                    );
                                                                            }
                                                                    );
                    type = assembly.GetType(typeName);
                }
                else
                {
                    type = Type.GetType(typeName);
                }
                return CreateSetStaticPropertyValueAction<TProperty>(type, propertyName);
            }
        }
    }
    
    
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  • 原文地址:https://www.cnblogs.com/Microshaoft/p/2475897.html
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