多线程 同时读取一个集合 怎么才能 只读取一遍
C#??多线程??Task
public class demo
{
public int ID { get; set; }
public string Name { get; set; }
public int State { get; set; }
public string DownFrom { get; set; }
}
static List<demo> listdemo = new List<demo>();
public static void add()
{
for (int i = 0; i < 100; i++)
{
demo dm = new demo { ID = i, Name = "Test" + i, DownFrom = "中国", State = 0 };
listdemo.Add(dm);
}}
public static void read(List<demo> listthread)
{
// lock (listthread)
// {
foreach (var dm in listthread)
{
Console.WriteLine(dm.ID + "\t" + dm.Name + "\t" + dm.DownFrom + "\t线程" + Task.CurrentId));
Thread.Sleep(1000);
// }
}
}
static void Main(string[] args)
{
Task parent = new Task(() =>
{
CancellationTokenSource cts = new CancellationTokenSource();
var tf = new TaskFactory(cts.Token,
TaskCreationOptions.AttachedToParent, TaskContinuationOptions.ExecuteSynchronously, TaskScheduler.Default);
tf.StartNew(() => read(list[0],(int)Task.CurrentId)).ContinueWith(TaskEnded);
tf.StartNew(() => read(listdemo));
tf.StartNew(() => read(listdemo));
}
);
parent.Start();
parent.Wait();
Console.Read();
}
