using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace Rs.Framework
{
    public class EntityHelper
    {
        /// <summary>
        /// 实体类转换类
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="dr">需要转换的Dr</param>
        /// <returns></returns>
        public static T ToEntity<T>(DataRow dr) where T: new()
        {
            T entity = new T();
            PropertyInfo[] pis = typeof(T).GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance);
            foreach (PropertyInfo propertyInfo in pis)
            {
                if(dr.Table.Columns.Contains(propertyInfo.Name))
                {
                    if (propertyInfo.PropertyType.IsEnum)
                    {
                        propertyInfo.SetValue(entity, Enum.Parse(propertyInfo.PropertyType, dr[propertyInfo.Name].ToString()));
                    }
                    else
                    {
                        propertyInfo.SetValue(entity, Convert.ChangeType(dr[propertyInfo.Name], propertyInfo.PropertyType));
                    }
                }
            }
            return entity;
        }
    }
}