filehelper.cs

我的一个Ado.Net一个框架设计

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.IO;
using Library;

namespace DAL
{
    public static class FileHelper
    {

        /// <summary>
        /// 将表中数据保存到文件夹folderName下的xml文件xmlName；
        /// </summary>
        /// <param name="xmlName">要保存的xml文件名称</param>
        /// <param name="folderName">文件所在路径，但是并不包括文件名称（Application.StartupPath + Path.DirectorySeparatorChar + "FolderName" + Path.DirectorySeparatorChar;）</param>
        /// <param name="dataTable">要保存的数据表</param>
        /// <returns>保存成功返回true，否则是false</returns>
        public static SuceedFailMessage WriteToXml(string xmlName, string serverFilePath, DataTable dataTable)
        {  
            serverFilePath = serverFilePath + xmlName + ".xml";
            SuceedFailMessage isSuceed = new SuceedFailMessage();
            try
            {
                if (!Directory.Exists(Path.GetDirectoryName(serverFilePath)))
                {
                    Directory.CreateDirectory(Path.GetDirectoryName(serverFilePath));
                }
                dataTable.WriteXml(serverFilePath, XmlWriteMode.WriteSchema);
                isSuceed.succeedFail = SucceedFail.Succeed;
                isSuceed.message = "Suceed";
                return isSuceed;
            }
            catch (IOException ex)
            {
                isSuceed.succeedFail = SucceedFail.Fail;
                isSuceed.message = ex.Message;
                return isSuceed;
            }
            catch (Exception ex)
            {
                isSuceed.succeedFail = SucceedFail.Fail;
                isSuceed.message = ex.Message;
                return isSuceed;
            }
        }

        /// <summary>
        /// 从xml文件中读数据，返回一个DataTable
        /// </summary>
        /// <param name="xmlName">xml文件名称</param>
        /// <param name="serverFilePath">xml文件所在路径</param>
        /// <returns>DataTable</returns>
        public static DataTable ReadFromXml(string xmlName, string serverFilePath)
        {
            serverFilePath = serverFilePath + xmlName + ".xml";
            bool isExistsPath = File.Exists(serverFilePath);
            DataTable dataTable = new DataTable(xmlName);
            try
            {
                if (isExistsPath)
                {
                    dataTable.ReadXml(serverFilePath);
                }
                else
                {
                    dataTable = null;
                }
                return dataTable;
            }
            catch (IOException ex)
            {
                throw ex;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }
}