读取方法的属性值-C#/.NET问题

Read the value of an attribute of a method(读取方法的属性值)

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问题描述

我需要能够从我的方法中读取我的属性值，我该怎么做?

I need to be able to read the value of my attribute from within my Method, how can I do that?

[MyAttribute("Hello World")]
public void MyMethod()
{
    // Need to read the MyAttribute attribute and get its value
}



推荐答案

你需要调用MethodBase 对象上的 noreferrer">GetCustomAttributes 函数.
获取 MethodBase 对象的最简单方法是调用 MethodBase.GetCurrentMethod.(注意要加上[MethodImpl(MethodImplOptions.NoInlining)])

You need to call the GetCustomAttributes function on a MethodBase object.
The simplest way to get the MethodBase object is to call MethodBase.GetCurrentMethod. (Note that you should add [MethodImpl(MethodImplOptions.NoInlining)])

例如:

MethodBase method = MethodBase.GetCurrentMethod();
MyAttribute attr = (MyAttribute)method.GetCustomAttributes(typeof(MyAttribute), true)[0] ;
string value = attr.Value;    //Assumes that MyAttribute has a property called Value

你也可以手动获取MethodBase，像这样:(这样会更快)

You can also get the MethodBase manually, like this: (This will be faster)

MethodBase method = typeof(MyClass).GetMethod("MyMethod");

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