如何创建类的实例并从Bag对象（如会话）设置属性 [英] how to create an instance of class and set properties from a Bag object like session

问题描述

该类将在运行时中声明，并且值存储在 Bag 对象，例如 session 或 ViewBag 。现在，我想创建该类的一个实例，并使用Bag数据设置其属性。我知道我应该使用 reflection ，但是我不知道是否有开箱即用的方法做这样的事情，或者我应该创建一个？

the class will be declared in runtime and values are stored in a Bag object like session or ViewBag . Now I want to create an instance of the class and set it's properties using Bag data . I know that I should use reflection , but I don't know if there is any method out of box that does such things or I should create one ?

session["Foo"] = "foo";
session["Bar"] = "bar";

var instance = System.Activator.CreateInstance(Type.GetType(className));

instance = ? // how to set properties using session

设置属性该类在设计时不可用，应用程序也不知道

the class is not available in design time and application has no idea what its properties are .

推荐答案

Type myType = Type.GetType(className);
var instance = System.Activator.CreateInstance(myType);
PropertyInfo[] properties = myType.GetProperties();

foreach (var property in properties)
{
    property.SetValue(instance, session[property.Name], null);
}

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