例一：

Parallel.For(1, arraySize, i =>

{

ary[i] = ary[i] + ary[i - 1];

});
如下：

object _lock = new object();

Parallel.For(1, arraySize, i =>

{

lock(_lock)

ary[i] = ary[i] + ary[i - 1];

});

解决方案:lock 确保当一个线程位于代码的临界区时，另一个线程不进入临界区，如果其他线程试图进入锁定的代码，则它将一直等待，直到该对象被释放

例二：
private static readonly AsyncLocal<LocalLifeTineScopelrapper> AsynclLocallLifeScope = new AsyncLocal<LocalLifeTimeScopelrapper>();

private static ILifetimeScope GetCurrentUow()

{

    var uow = AsyncLocalLifeScope.Value ? .LifetimeScope;

    if(uow == null)

    {

        return null;

    }

    return uow;

}

解决如下

private static ILifetimeScope GetCurrentUow()

{

    lock(AsynclLocallLifeScope)

    {

        var uow = AsyncLocalLifeScope.Value ? .LifetimeScope;

        if(uow == null)

        {

            return null;

        }

        return uow;

    }

}