c# - 如何迭代类字段并设置属性

我不确定这是否可行，但我想迭代一个类并设置字段成员属性，而不显式引用字段对象：

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; }
}

在我标记为答案的答案中，您需要添加：

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

这是一个完整的工作示例：

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

class Program
{
    static void PropertySet(object p, string propName, object value)
    {
        Type t = p.GetType();
        PropertyInfo info = t.GetProperty(propName);
        if (info == null)
            return;
        if (!info.CanWrite)
            return;
        info.SetValue(p, value, null);
    }

    static void PropertySetLooping(object p, string propName, object value)
    {
        Type t = p.GetType();
        foreach (PropertyInfo info in t.GetProperties())
        {
            if (info.Name == propName && info.CanWrite)
            {
                info.SetValue(p, value, null);
            }
        }
    }

    static void Main(string[] args)
    {
        Person p = new Person();

        PropertySet(p, "Name", "Michael Ellis");
        Console.WriteLine(p.Name);
        PropertySetLooping(p, "Name", "Nigel Mellish");
        Console.WriteLine(p.Name);
    }
}

编辑：添加了一个循环变体，以便您可以了解如何循环属性信息对象。