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

namespace Core.StlMes.Client.ZGMil.Common
{
    class EntityTool
    {
        /// <summary>
        /// 返回实体类属性对应的数据库字段名
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="t"></param>
        /// <returns></returns>
        public static ArrayList getProperties<T>(T t)
        {
            ArrayList EntilyProName = new ArrayList();
            
            if (t == null)
            {
                return EntilyProName;
            }
            System.Reflection.PropertyInfo[] properties = t.GetType().GetProperties(System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public);

            if (properties.Length <= 0)
            {
                return EntilyProName;
            }
            foreach (System.Reflection.PropertyInfo item in properties)
            {
                string name = item.Name;
                EntilyProName.Add(name);
              
            }
            return EntilyProName;
        }

        /// <summary>
        /// 数据库字段名转换成实体类属性名
        /// </summary>
        /// <param name="strName"></param>
        /// <returns></returns>
        public static string SQLColumnNameToEntityName(string strName)
        {
            string[] sArray = strName.Split(new char[1] { '_' });
            string Rstring = "";
            foreach (string str in sArray)
            {
                string temp = "";
                //temp = str.ToLower();
                temp = str.Substring(0, 1).ToUpper() + str.Substring(1).ToLower(); ;
                Rstring += temp;
            }
            return Rstring;
        }




        public static Object setObjectByDataTable(Object obj, DataTable dt)
        {
            System.Reflection.PropertyInfo[] properties = obj.GetType().GetProperties(System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public);
            foreach (System.Reflection.PropertyInfo item in properties)
            {
                string name = item.Name;
               // string value = item.GetValue(obj, null).ToString();

                foreach (DataRow dr in dt.Rows)
                {
                    if (SQLColumnNameToEntityName(dr[0].ToString()).Equals(name))
                    {
                        item.SetValue(obj, dr[1].ToString(), null);
                    }
                }
            }
            return obj;
        }
    }
}