c# - 如何遍历类字段并设置属性 [英] c# - How to iterate through classes fields and set properties

问题描述

我不确定这是否可行，但我想遍历一个类并设置一个字段成员属性而不显式引用字段对象:

I am not sure if this is possible but I want to iterate through a class and set a field member property without referring to the field object explicitly:

public class Employee
{
  public Person _person = new Person();

  public void DynamicallySetPersonProperty()
  {
    MemberInfo[] members = this.GetType().GetMembers();

    foreach (MemberInfo member in members.Where(a => a.Name == "_person"))
    //get the _person field
    {

      Type type = member.GetType();
      PropertyInfo prop = type.GetProperty("Name"); //good, this works, now to set a value for it

      //this line does not work - the error is "property set method not found"
      prop.SetValue(member, "new name", null);
    }
  }
}


public class Person
{
  public string Name { get; set; }
}

在我标记为您需要添加的答案的答案中:

In the answer that I marked as the answer you need to add:

  public static bool IsNullOrEmpty(this string source)
  {
    return (source == null || source.Length > 0) ? true : false;
  }

推荐答案

public class Person
{
    public string Name { get; set; }
}

public class Employee
{
    public Person person = new Person();

    public void DynamicallySetPersonProperty()
    {
        var p = GetType().GetField("person").GetValue(this);
        p.GetType().GetProperty("Name").SetValue(p, "new name", null);
    }
}

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