C# anonymus 代表效率/安全
我有哪个委托的进度：
// in ProgressForm thread
public delegate void executeMethod(object parameters);
private executeMethod method;
public object parameters;
// ...
private void ProgressForm_Shown(object sender, EventArgs e)
{
method.Invoke(parameters);
}
应用哪种方式更好（更高效或更安全） - 匿名委托像这样调用：
// in other thread
ProgressForm progress = new ProgressForm();
progress.ExecuteMethod = delegate
{
// to do
}
或使用像这样的单独方法：
// in other thread
private void myMethod(object par)
{
// to do
}
progress.ExecuteMethod = this.myMethod;
I have progress form which delegate:
// in ProgressForm thread
public delegate void executeMethod(object parameters);
private executeMethod method;
public object parameters;
// ...
private void ProgressForm_Shown(object sender, EventArgs e)
{
method.Invoke(parameters);
}
Which way is better (mor efficient or safe) to apply - anonymus delegates call like this:
// in other thread
ProgressForm progress = new ProgressForm();
progress.ExecuteMethod = delegate
{
// to do
}
or using separate method like this:
// in other thread
private void myMethod(object par)
{
// to do
}
progress.ExecuteMethod = this.myMethod;
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评论（2）
归根结底，它们惊人地相似。简而言之，编译器在内部为匿名情况创建隐藏方法。尽管在某些情况下它可能会选择创建静态方法（如果它不使用
this或任何捕获的变量），但没有具体的性能差异 - 这可能会有所帮助 em>（但还不足以令人兴奋）我会在以下情况下使用匿名方法：
主要要注意的是臭名昭著的 foreach （通常）捕获的变量陷阱，但在某些情况下，也有可能将引用渗入匿名方法，意外地延长了大对象的生命周期。
对于较长的工作，我会使用
myMethod方法。Ultimately they are surprisingly similar; simply, the compiler creates the hidden method internally for the anonymous case. There is no specific performance difference, although there are cases when it might choose to create a static method (if it doesn't use
thisor any captured variables) - that may help marginally (but not enough to get excited about)I would use an anonymous method when:
myMethodThe main thing to watch is the notorious
foreach(typically) captured variable gotcha, but in some cases it is also possible to bleed a reference into the anonymous method, extending the life-time of a big object unexpectedly.For longer work, I would use the
myMethodapprach.性能是相同的。与其他方法一样，匿名委托由编译器转换为常规方法。如果您 ILDSM 代码，您将看到为匿名方法生成了真实的（但隐藏的）名称。
The performance is identical. An anonymous delegate is converted by the compiler into a regular method like any other. If you ILDSM the code you'll see that a real (but hidden) name is generated for the anonymous method.