C# 将object对象转换为实体对象

C# 将object对象转换为实体对象.一共两种方法.

第一种方法,通过反射遍历的方式转换。代码如下:

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/// <summary> /// 将object对象转换为实体对象 /// </summary> /// <typeparam name="T">实体对象类名</typeparam> /// <param name="asObject">object对象</param> /// <returns></returns> private T ConvertObject<T>(object asObject) where T : new() {     //创建实体对象实例     var t = Activator.CreateInstance<T>();     if (asObject != null)     {         Type type = asObject.GetType();         //遍历实体对象属性         foreach (var info in typeof(T).GetProperties())         {             object obj = null;             //取得object对象中此属性的值             var val = type.GetProperty(info.Name)?.GetValue(asObject);             if (val != null)             {                 //非泛型                 if (!info.PropertyType.IsGenericType)                     obj = Convert.ChangeType(val, info.PropertyType);                 else//泛型Nullable<>                 {                     Type genericTypeDefinition = info.PropertyType.GetGenericTypeDefinition();                     if (genericTypeDefinition == typeof(Nullable<>))                     {                         obj = Convert.ChangeType(val, Nullable.GetUnderlyingType(info.PropertyType));                     }                     else                     {                         obj = Convert.ChangeType(val, info.PropertyType);                     }                 }                 info.SetValue(t, obj, null);             }         }     }     return t; }

第二种方法

需引用：

程序集:Newtonsoft.Json.dll

命名空间:Newtonsoft.Json

代码如下:

/// <summary>
/// 将object对象转换为实体对象
/// </summary>
/// <typeparam name="T">实体对象类</typeparam>
/// <param name="asObject">object对象</param>
/// <returns></returns>
public static T ConvertObject<T>(object asObject) where T : new()
{
    //此方法将object对象转换为json字符
    var json = Newtonsoft.Json.JsonConvert.SerializeObject(asObject);
    //再将json字符转换为实体对象
    var t = Newtonsoft.Json.JsonConvert.DeserializeObject<T>(json);
    return t;
}

调用方式:

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/// <summary> /// test /// </summary> public void test() {     var obj = new {         id=1,name="张三",sex=1,age=22     };     //转换     user userModel = ConvertObject<user>(obj); }   /// <summary> /// 用户 /// </summary> public class user {     /// <summary>     /// 编号     /// </summary>     public int id { set; get; }     /// <summary>     /// 姓名     /// </summary>     public string name { set; get; }     /// <summary>     /// 性别     /// </summary>     public int sex { set; get; }     /// <summary>     /// 年龄     /// </summary>     public int age { set; get; } }

是不是很简单?

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