如何通过使用3.5 c#.net将参数传递给线程 [英] how to pass parameters to thread by using 3.5 c#.net

问题描述

在这里，我试图通过读取每个属性ID的xml文档来生成动态线程，但是面临一个问题，即如何将参数传递给动态线程，对于该线程，特定属性的相关元素是否有任何发送方式参数?请指教

here i am trying to generate a dynamic threads by reading xml document for each attribute id,but am facing a problem that how to pass parameter to dynamic thread,for which related elements of the particular attribute, is there any way to send parameters? please advice

在下面的线程中，我正在调用dowork方法，我必须传递其特定属性ID的元素的参数，我该怎么做?

in below thread i am calling a dowork method, i have to pass parameters of elements of which particular attribute id how can i do that?

static void Main(string[] args)
{
var currentDir = Directory.GetCurrentDirectory();
var xDoc = XDocument.Load(string.Format(Path.Combine(currentDir, "Hosts.xml")));
var threads = new List<Thread>();

foreach (XElement host in xDoc.Descendants("Host"))
{
    var hostID = (int) host.Attribute("id");
    var extension = (string) host.Element("Extension");
    var folderPath = (string) host.Element("FolderPath");
    var thread = new Thread(DoWork)
                     {
                         Name = string.Format("samplethread{0}", hostID)
                     };
    thread.Start(new FileInfo
                     {
                         HostId = hostID,
                         Extension = extension,
                         FolderPath = folderPath
                     });
    threads.Add(thread);
    }
   //Carry on with your other work, then wait for worker threads
   threads.ForEach(t => t.Join());
}

   static void DoWork(object threadState)
     {
       var fileInfo = threadState as FileInfo;
            if (fileInfo != null)
             {
               //Do stuff here
             }
      }

      class FileInfo
         {
           public int HostId { get; set; }
           public string Extension { get; set; }
           public string FolderPath { get; set; }
         }

如何调用在一个线程中带有多个参数的方法.我有一个叫做

How do I call a method that takes multiple parameters in a thread. I have a method called

 Send(string arg1, string arg2, string arg3)

那就是我要求你们提供传递参数的任何解决方案的原因，请注意这里我的线程方法是通过动态方式设计的，请提出任何建议吗?

thats the reason i have asked you guys for any solution to pass parameters,note here my threading methodology was designed by dynamical manner, any suggestion please ?

推荐答案

您已经传递了参数.我不确定我是否理解您的问题，但

You're already passing in parameters just fine. I'm not sure if I understand your question but

我必须传递其特定属性ID的元素的参数 我该怎么办?

i have to pass parameters of elements of which particular attribute id how can i do that?

听起来您需要的只是foreach中的if statement.您已经在遍历并创建线程/传递参数.您是否只是在问如何确保每个项目都有特定的属性ID?如果是这样-那就做到

It sounds like all you need is an if statement inside your foreach. You are already looping through and creating threads/passing params. Are you just asking how to make sure each item has a particular attribute id? If so - just make it

foreach (XElement host in xDoc.Descendants("Host"))
{
    var hostID = (int) host.Attribute("id");
    // Check ID here
    if(hostID != ID_I_WANT) 
        continue;
    var extension = (string) host.Element("Extension");
    var folderPath = (string) host.Element("FolderPath");
    var thread = new Thread(DoWork)
                     {
                         Name = string.Format("samplethread{0}", hostID)
                     };
    thread.Start(new FileInfo
                     {
                         HostId = hostID,
                         Extension = extension,
                         FolderPath = folderPath
                     });
    threads.Add(thread);
    }
   //Carry on with your other work, then wait for worker threads
   threads.ForEach(t => t.Join());
}

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