using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml.Serialization;

namespace TProduct.Common
{
    public class XmlFileHelper
    {
        /// <summary>
        /// 读取文件
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public static string ReadFile(string filePath)
        {
            try
            {
                using (var stream = new FileStream(filePath, FileMode.Open))
                using (var reader = new StreamReader(stream))
                {
                    return reader.ReadToEnd();
                }
            }
            catch
            {
                return null;
            }
        }

        /// <summary>
        /// 创建并写入文件
        /// </summary>
        /// <param name="obj"></param>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public static bool WriteFile(string obj, string fileName)
        {
            try
            {
                using (var stream = new FileStream(fileName, FileMode.OpenOrCreate))
                using (var writer = new StreamWriter(stream))
                {
                    writer.Write(obj);
                }
                return true;
            }
            catch
            {
                return false;
            }
        }

        /// <summary>
        /// 实体类转XML
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string XmlSerialize<T>(T obj)
        {
            using (System.IO.StringWriter sw = new StringWriter())
            {
                Type t = obj.GetType();
                System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(obj.GetType());
                serializer.Serialize(sw, obj);
                sw.Close();
                return sw.ToString();
            }
        }

        /// <summary>
        /// XML转实体类
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="strXML"></param>
        /// <returns></returns>
        public static T DESerializer<T>(string strXML) where T : class
        {
            try
            {
                using (StringReader sr = new StringReader(strXML))
                {
                    XmlSerializer serializer = new XmlSerializer(typeof(T));
                    return serializer.Deserialize(sr) as T;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }    


    }
}