ThreadHelper

最新推荐文章于 2023-04-10 09:51:51 发布

转载最新推荐文章于 2023-04-10 09:51:51 发布 · 552 阅读

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/mskycn/p/5100109.html

本文介绍了一个名为 ThreadHelper 的类，它提供了两种方式来安全地执行多线程任务：RunSafeThread 和 Threading。RunSafeThread 用于在控制对象未被释放的情况下，通过调用 Invoke 方法来安全执行方法。Threading 则用于创建并启动一个新线程来执行指定的委托方法，并提供回调机制。

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public class ThreadHelper
{
public static void RunSafeThread(Control ctrl, MethodInvoker invoker)
{
if(ctrl != null && !ctrl.IsDisposed)
{
try
{
if (ctrl.InvokeRequired)
{
ctrl.Invoke(invoker);
}
else
{
invoker();
}
}
catch { }
}
}

public static Thread Threading<TReturn>(ThreadDelegate<TReturn> method, ThreadCallback<TReturn> callback)
{
Thread thread = new Thread(() =>
{
IAsyncResult result = method.BeginInvoke(null, null);
TReturn returnValue = method.EndInvoke(result);
if(callback != null)
{
callback(returnValue);
}
});
thread.Start();
return thread;
}

public static Thread Threading<TReturn>(ThreadDelegateParams<TReturn> method, object[] parameters, ThreadCallback<TReturn> callback)
{
Thread thread = new Thread(() =>
{
IAsyncResult result = method.BeginInvoke(ref parameters, null, null);
TReturn returnValue = method.EndInvoke(ref parameters, result);
if (callback != null)
{
callback(returnValue);
}
});
thread.Start();
return thread;
}

public static Thread Threading<TReturn>(ThreadDelegateParams<TReturn> method, object[] parameters, ThreadCallbackParams<TReturn> callback)
{
Thread thread = new Thread(() =>
{
IAsyncResult result = method.BeginInvoke(ref parameters, null, null);
TReturn returnValue = method.EndInvoke(ref parameters, result);
if (callback != null)
{
callback(returnValue, parameters);
}
});
thread.Start();
return thread;
}

public delegate TReturn ThreadCallback<TReturn>(TReturn returnValue);
public delegate TReturn ThreadCallbackParams<TReturn>(TReturn returnValue, object[] threadDelegateParams);
public delegate TReturn ThreadDelegate<TReturn>();
public delegate TReturn ThreadDelegateParams<TReturn>(ref object[] parameters);
}