C＃，从后台线程调用匿名方法（Action ）(C#, invoke anonymous method (Action) from background thread)

C＃，从后台线程调用匿名方法（Action <>）(C#, invoke anonymous method (Action<>) from background thread)

这应该很简单！

我想创建一个匿名的Action <>委托来执行GUI更新，我将从其他几个匿名委托调用它（它将在不同的线程上运行）。

void Test() { Action<string> invokeDisplay = new Action<string>(delegate(string Element) { //Do a variety of things to my GUI depending on Element parameter }); MethodInvoker opLong1 = new MethodInvoker(delegate() { // Do long task this.Invoke(invokeDisplay("long1")); }); MethodInvoker opLong2 = new MethodInvoker(delegate() { // Do long task this.Invoke(invokeDisplay("long2")); }); new Thread(new ThreadStart(opLong1)).Start(); new Thread(new ThreadStart(opLong2)).Start(); }

那么这条线的正确语法是什么？

this.Invoke(invokeDisplay("long1"));

This should be simple!

I want to create an anonymous Action<> delegate to perform a GUI update, which I will call from several other anonymous delegates (which will be run on separate threads).

void Test() { Action<string> invokeDisplay = new Action<string>(delegate(string Element) { //Do a variety of things to my GUI depending on Element parameter }); MethodInvoker opLong1 = new MethodInvoker(delegate() { // Do long task this.Invoke(invokeDisplay("long1")); }); MethodInvoker opLong2 = new MethodInvoker(delegate() { // Do long task this.Invoke(invokeDisplay("long2")); }); new Thread(new ThreadStart(opLong1)).Start(); new Thread(new ThreadStart(opLong2)).Start(); }

So whats the correct syntax for this line?

this.Invoke(invokeDisplay("long1"));

最满意答案

语法是：

Invoke(action, "long1");

委托是第一个参数，您要传递给它的参数如下。

The syntax would be:

Invoke(action, "long1");

The delegate is the first parameter, and the argument(s) you want to pass to it follow.