获取对象和属性名称的类型名称？

Question

我需要的功能，即返回{obj类型名称} {属性名} {属性名} .. 例如：。

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

class Country { 
    public string Name {get;set;} 
    public City MyCity {get;set;} 
} 

var myCountry = new Country() { 
    Name="Ukraine", 
    MyCity = new City() { 
     Name = "Kharkov" 
    } 
} 

所以我的函数返回“{} Country.Name” 或“{Country.MyCity.Name}”取决于输入参数。有什么办法呢？

Answer 1

使用.NET反射

http://www.codersource.net/microsoftnet/cbasicstutorials/cnettutorialreflection.aspx

Answer 2

你没有张贴要求很多信息，但是，如果你知道你的对象类型，然后就没有必要使用反射，你可以用is像测试这样的：

if(returnCity && myObject is Country) //I'm assuming that the input value is boolean but, you get the idea... 
{ 
    return myObject.City.Name; 
} 
else 
{ 
    return myObject.Name; 
} 

现在，如果你想使用反射，你可以做这些线路中的东西：

public static string GetNameFrom(object myObject) 
{ 
    var t = myObject.GetType(); 
    if(t == typeof(Country)) 
    { 
     return ((Country)myObject).City.Name; 
    } 

    return ((City)myObject).Name; 
} 

或者，更通用的方法：

static string GetNameFrom(object myObject) 
{ 
    var type = myObject.GetType(); 
    var city = myObject.GetProperty("City"); 
    if(city != null) 
    { 
     var cityVal = city.GetValue(myObject, null); 
     return (string)cityVal.GetType().GetProperty("Name").GetValue(cityVal, null); 
    } 

    return (string)type.GetProperty("Name").GetValue(myObject, null); 
} 

Answer 3

创建IPrintable外观和使用递归函数打印（）。尝试抓住这个想法并修改具体任务的代码。希望，我的榜样将会对你有所帮助。

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 

namespace StackOverflow 
{ 
    interface IPrintable 
    { 
     string Name { get; } 
    } 

    class City : IPrintable 
    { 
     public string Name { get; set; } 
    } 

    class Country : IPrintable 
    { 
     public string Name { get; set; } 
     public City MyCity { get; set; } 
    } 

    class Program 
    { 
     static void Main(string[] args) 
     { 
      var myCountry = new Country() 
      { 
       Name = "Ukraine", 
       MyCity = new City() 
       { 
        Name = "Kharkov" 
       } 
      }; 

      Console.WriteLine(Print(myCountry, @"{{{0}}}")); 
      Console.WriteLine(Print(new City() 
      { 
       Name = "New-York" 
      }, @"{{{0}}}")); 
     } 

     private static string Print(IPrintable printaleObject, string formatter) 
     { 
      foreach (var prop in printaleObject.GetType().GetProperties()) 
      { 
       object val = prop.GetValue(printaleObject, null); 
       if (val is IPrintable) 
       { 
        return String.Format(formatter, printaleObject.Name) + Print((IPrintable)val, formatter); 
       } 
      } 
      return String.Format(formatter, printaleObject.Name); 
     } 
    } 
}