通过调用一个singleton对象上反射的方法 [英] Invoking a method using reflection on a singleton object

问题描述

所以，我有以下几点：

public class Singleton
{

  private Singleton(){}

  public static readonly Singleton instance = new Singleton();

  public string DoSomething(){ ... }

  public string DoSomethingElse(){ ... }

}

使用反射我怎么能调用DoSomething的方法？

Using reflection how can I invoke the DoSomething Method?

我之所以问是因为我存储在XML中的方法名称和动态创建UI。比如我动态创建一个按钮，并告诉它什么方法是单击按钮时通过反射调用。在某些情况下，这将是DoSomething的或在其他人将是DoSomethingElse

Reason I ask is because I store the method names in XML and dynamically create the UI. For example I'm dynamically creating a button and telling it what method to call via reflection when the button is clicked. In some cases it would be DoSomething or in others it would be DoSomethingElse.

推荐答案

未经测试，但应该工作...

Untested, but should work...

string methodName = "DoSomething"; // e.g. read from XML
MethodInfo method = typeof(Singleton).GetMethod(methodName);
FieldInfo field = typeof(Singleton).GetField("instance",
    BindingFlags.Static | BindingFlags.Public);
object instance = field.GetValue(null);
method.Invoke(instance, Type.EmptyTypes);

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