Control/UpLoadFile.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using Common;
using Config;
using Entity;
using System.Web;

namespace Controller
{
    /// <summary>
    /// 上传文件操作类
    /// </summary>
    public class UpLoadFile
    {
        private static string FileType = ".rar";//可用的文件类型
        /// <summary>
        /// 上传文件,返回消息,返回附件FileSize,Attachment,FileName,FileType
        /// </summary>
        /// <param name="fileUpload"></param>
        /// <param name="m_message"></param>
        /// <param name="attach"></param>
        /// <returns></returns>
        public static bool UpLoad(HttpPostedFile myFile, ref string m_message, ref AttachmentInfo attach)
        {
            string mPath = GetUploadFolder("uploadfile");
            if (myFile != null)
            {
                int nFileLen = myFile.ContentLength;
                if (nFileLen == 0)
                {
                    m_message = "<br /><font color=red>没有选定被上传的文件</font></b>";

                    return false;
                }
                //比较扩展名
                FileType = AttachmentConfigManager.AttachConfig.UploadFileType;//可用的文件类型
                string fileExtendName = Path.GetExtension(myFile.FileName).ToLower();//
                if (FileType.IndexOf(fileExtendName) < 0)
                {
                    m_message = "文件必须是以" + FileType.Replace("|", " , ") + "为扩展名的文件";
                    return false;
                }

                byte[] myData = new Byte[nFileLen];
                myFile.InputStream.Read(myData, 0, nFileLen);
                //为文件重命名为日期格式
                DateTime filenamedate = DateTime.Now;
                Random ran = new Random();
                string sFilename = filenamedate.Hour.ToString() + "-" + filenamedate.Minute.ToString() + "-" + filenamedate.Second.ToString() + ran.Next(1000, 2000) + fileExtendName;

                attach.Filesize = StrTools.ByteToString(myFile.ContentLength);
                attach.Attachment =Path.GetFileName(myFile.FileName) ;
                attach.Filetype = fileExtendName;

                int file_append = 0;
                //看是否已存在文件
                while (File.Exists(mPath + sFilename))