使用递归更新子属性的属性

Question

我正在构建一个映射引擎。

“路径”将以字符串形式出现，此处显示为mappingAddress。 AddressAddressValue中的值是需要填充员工中已经实例化的对象2级别的值。

如何更新“TheAddressType”在2层深的“雇员”

致谢！

class Program 
{ 
    static void Main(string[] args) 
    { 
     string mappingAddress = "EmployeeAddress.ChildAddressType.TheAddressType"; 

     string theAddressTypeValue = "A Home"; 

     Employee employee = new Employee(); 

     //Magic code here 
    } 
} 

public class Employee 
{ 
    public Employee() 
    { 
     EmployeeAddress = new Address(); 
    } 

    public Address EmployeeAddress { get; set; } 
} 

public class Address 
{ 
    public Address() 
    { 
     ChildAddressType = new AddressType(); 
    } 

    public AddressType ChildAddressType { get; set; } 
} 

public class AddressType 
{ 
    public string TheAdddressType { get; set; } 
} 

Answer 1

哦，如果有真的不能改变任何现有的东西.....

我相信这是你在找什么：

How to set Vaues to the Nested Property using C# Reflection.?

你的程序应该是这样的：

class Program 
{ 
    static void Main(string[] args) 
    { 
     string mappingAddress = "EmployeeAddress.ChildAddressType.TheAddressType"; 

     string theAddressTypeValue = "A Home"; 

     Employee employee = new Employee(); 

     //Magic code - Thanks Jon Skeet 
     SetProperty(mappingAddress, employee, theAddressTypeValue); 
    } 

    public static void SetProperty(string compoundProperty, object target, object value) 
    { 
     string[] bits = compoundProperty.Split('.'); 
     for (int i = 0; i < bits.Length - 1; i++) 
     { 
      PropertyInfo propertyToGet = target.GetType().GetProperty(bits[i]); 
      target = propertyToGet.GetValue(target, null); 
     } 
     PropertyInfo propertyToSet = target.GetType().GetProperty(bits.Last()); 
     propertyToSet.SetValue(target, value, null); 
    } 
} 

public class Employee 
{ 
    public Employee() 
    { 
     EmployeeAddress = new Address(); 
    } 

    public Address EmployeeAddress { get; set; } 
} 

public class Address 
{ 
    public Address() 
    { 
     ChildAddressType = new AddressType(); 
    } 

    public AddressType ChildAddressType { get; set; } 
} 

public class AddressType 
{ 
    public string TheAddressType { get; set; } 
}