使用反射来调用方法 [英] using reflection to invoke a method

问题描述

大家好，


有两种方法可以使用反射来调用方法，

1.使用InvokeMember;
2.使用GetType.GetMethod检索MethodInfo对象，然后使用MethodInfo对象调用该方法.我的观点是从结果角度来看，它们是相同的，但是方法2如果需要的话效率更高可以通过同一个MethodInfo对象多次调用该方法-由于每次调用InvokeMember时，都需要查找该方法，方法2中没有保存为MethodInfo对象的任何内容，并且每次InvokeMember进行绑定以查找同一方法时，<我的问题是我的理解观点是否正确，与这两种方法相比是否还有其他区别/优点/缺点. class ="h2_lin">解决方案

对我来说合理的声音.我从不使用InvokeMember.

George_George写道:

我的问题是我的理解点是否正确，并且与这两种方法相比，是否还有其他差异/优点/缺点.

看起来您的理解是正确的.

如果在编译时知道方法签名，则可以通过使用 ^ ]并调用该委托.

Hello everyone,


There are two ways to use reflection to invoke a method,

1. Using InvokeMember;
2. Using GetType.GetMethod to retrieve a MethodInfo object, then use the MethodInfo object to invoke the method.

My point is from the result point of view, they are the same, but method 2 if more efficient if we want to invoke the method multiple of times by the same MethodInfo object -- since each time we call InvokeMember, it needs to find the method, nothing saved as MethodInfo object in method 2 and each time InvokeMember did the binding to find the same method.

My question is whether my point of understanding is correct and whether there any more differences/pros/cons compared with the 2 methods.


thanks in advance,
George

解决方案

Sounds reasonable to me. I never use InvokeMember.

George_George wrote:

My question is whether my point of understanding is correct and whether there any more differences/pros/cons compared with the 2 methods.

Looks like your understanding are correct.

If you know the method signature at compile time, you can gain more performance by creating a delegate from the MethodInfo using Delegate.CreateDelegate(Type, MethodInfo)[^] and invoking that delegate.

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