本文介绍了映射对象字典,反之亦然的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
有没有优雅快速的方法来映射对象字典,反之亦然?
例:
的IDictionary<字符串,对象> A =新字典<字符串,对象>();
一[ID] = 1;
一[名称] =艾哈迈德;
// .....
变为
SomeClass的B =新SomeClass的();
b.Id = 1;
b.Name =艾哈迈德;
// ..........
解决方案
使用一些反思和仿制药的两种方法扩展,你可以做到这一点。
右键,其他人却大都相同的解决方案,但这种使用更少的反射是更多的性能,明智和方式更具有可读性:
公共静态类ObjectExtensions
{
公共静态牛逼ToObject< T>(这IDictionary的<字符串,对象>源)
其中T:类,新的()
{
牛逼someObject =新T();
键入someObjectType = someObject.GetType();
的foreach(KeyValuePair<字符串,对象>中源项)
{
someObjectType.GetProperty(item.Key).SetValue(someObject,item.Value,NULL);
}
返回someObject;
}
公共静态的IDictionary<字符串,对象> AsDictionary(此对象源,的BindingFlags bindingAttr = BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.Instance)
{
返回source.GetType()。GetProperties中(bindingAttr).ToDictionary
(
propInfo => propInfo.Name,
propInfo => propInfo.GetValue(源,空)
);
}
}
A级
{
公共字符串为prop1
{
得到;
组;
}
公众诠释Prop2
{
得到;
组;
}
}
类节目
{
静态无效的主要(字串[] args)
{
字典<字符串,对象>词典=新词典<字符串,对象>();
dictionary.Add(为prop1,世界,你好!);
dictionary.Add(Prop2,3893);
一个someObject = dictionary.ToObject< A>();
IDictionary的<字符串,对象> objectBackToDictionary = someObject.AsDictionary();
}
}
Are there any elegant quick way to map object to a dictionary and vice versa?
Example:
IDictionary<string,object> a = new Dictionary<string,object>();
a["Id"]=1;
a["Name"]="Ahmad";
// .....
becomes
SomeClass b = new SomeClass();
b.Id=1;
b.Name="Ahmad";
// ..........
解决方案
Using some reflection and generics in two methods extensions you can achieve that.
Right, others did mostly the same solution, but this uses less reflection which is more performance-wise and way more readable:
public static class ObjectExtensions
{
public static T ToObject<T>(this IDictionary<string, object> source)
where T : class, new()
{
T someObject = new T();
Type someObjectType = someObject.GetType();
foreach (KeyValuePair<string, object> item in source)
{
someObjectType.GetProperty(item.Key).SetValue(someObject, item.Value, null);
}
return someObject;
}
public static IDictionary<string, object> AsDictionary(this object source, BindingFlags bindingAttr = BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.Instance)
{
return source.GetType().GetProperties(bindingAttr).ToDictionary
(
propInfo => propInfo.Name,
propInfo => propInfo.GetValue(source, null)
);
}
}
class A
{
public string Prop1
{
get;
set;
}
public int Prop2
{
get;
set;
}
}
class Program
{
static void Main(string[] args)
{
Dictionary<string, object> dictionary = new Dictionary<string, object>();
dictionary.Add("Prop1", "hello world!");
dictionary.Add("Prop2", 3893);
A someObject = dictionary.ToObject<A>();
IDictionary<string, object> objectBackToDictionary = someObject.AsDictionary();
}
}
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