C#访问字段语法 [英] C# Accessing field syntax

问题描述

如果仅具有我要访问的变量的名称，我将如何访问对象的变量的值?在C#中.

How would I access an object's variable's value if I only have the name of the variable I wish to access? In C#.

说我有一个以数组中的字符串表示的变量名列表.例如，我将如何循环访问它们.我可以在Actionscript中执行以下操作:

Say I had a list of variable names represented as strings in an array. How would I access them in a loop, for example. I can do something like the following in Actionscript:

var arrayOfVariableNames:Array = ["name", "age", "sex"]

for each(var person:Person in persons)
{
    if (person[age] > 29)    //what is equivalent in c# for object[field]
    {
        //do something
    }
}

推荐答案

您可以使用反射通过字段名称访问字段:

You can use reflection to access a field by its name :

FieldInfo ageField = typeof(Person).GetField("age");
int age = (int) field.GetValue(person);

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