用jquery uploadify上传插件上传文件

 public void ProcessRequest(HttpContext context)
    {
string esOIDs = System.Web.HttpContext.Current.Request["esOIDs"];
string userID=System.Web.HttpContext.Current.Session["USER_ID"].ToString();

        context.Response.ContentType = "text/plain";
        context.Response.Charset = "utf-8";

        HttpPostedFile file = context.Request.Files["Filedata"];
string Path = HttpContext.Current.Server.MapPath(@context.Request["folder"]) + "\\AccessoryFiles";

if (!Directory.Exists(Path))//判断文件是否存在
        {
            Directory.CreateDirectory(Path);
        }

if (file != null)
        {
if (file.ContentLength <= 1024 * 1024 * 1024)//限定文件小于100M
            {
bool fileOK = false;
string fileExtension = System.IO.Path.GetExtension(file.FileName).ToLower(); //得到选择文件 扩展名

string[] allowedExtensions = { ".doc", ".docx", ".ppt", ".pptx", ".xls", ".xlsx", ".pdf",".wmv",".avi", ".gif", ".png", ".bmp", ".jpg", ".mp4", ".rar", ".zip" }; //可上传文件类型列表
for (int i = 0; i < allowedExtensions.LongLength; i++)//判断上传文件是否为上述合法类型
                {
if (fileExtension == allowedExtensions[i])
                    {
                        fileOK = true;
break;
                    }
                }

if (fileOK == true)//如果文件格式正确
                {
string uploadPath = Path + "\\" + esOIDs;
if (!Directory.Exists(uploadPath))//判断文件是否存在
                    {
                        Directory.CreateDirectory(uploadPath);
                    }

string fileNewName = DateTime.Now.ToString("yyyyMMddHHmmss") + System.IO.Path.GetExtension(file.FileName).ToLower();
                    file.SaveAs(uploadPath + "\\" + fileNewName);

if (!Directory.Exists(uploadPath + "\\" + fileNewName))
                    {
                        AccessoryObj accessoryObj = new AccessoryObj();
                        accessoryObj.REFOID = esOIDs;
                        accessoryObj.ReftypeVal = AccessoryType.项目;
                        accessoryObj.FILENAME = file.FileName;
                        accessoryObj.FILETYPE = fileExtension;
                        accessoryObj.FILEPATH = "FileUpLoad/AccessoryFiles/" + esOIDs + "/" + fileNewName;
                        accessoryObj.UPLOADUSER = userID;
                        accessoryObj.UPLOADDATE = DateTime.Now;

                        List<AccessoryObj> accList = new List<AccessoryObj>();
                        accList.Add(accessoryObj);
new AccessoryRepository().AddAccessoryObj(accList);
                    }

//下面这句代码缺少的话，上传成功后上传队列的显示不会自动消失
                    context.Response.Write("1");
                }
            }
        }
else
        {
            context.Response.Write("0");
        }
    }

public bool IsReusable
    {
get
        {
return false;
        }
    }

uploadhandler。ashx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="FileUpLoad.aspx.cs" Inherits="FileUpLoad" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml">
 <head id="Head1" runat="server">   
  <title></title>   
//去网上download一个jquery uploadify插件 ，这些文件都有
   <script src="../../Scripts/jquery/jquery.uploadify/jquery-1.3.2.min.js" type="text/javascript"></script>    
 <script src="../../Scripts/jquery/jquery.uploadify/jquery.uploadify.v2.1.0.min.js"         type="text/javascript"></script>     <script src="../../Scripts/jquery/jquery.uploadify/swfobject.js" type="text/javascript"></script>     <link rel="stylesheet" type="text/css" href="../../Scripts/jquery/jquery.uploadify/uploadify.css" />   

<script type="text/javascript">      
   $(document).ready(function () {       
      $("#uploadify").uploadify({                
'uploader': '../../Scripts/jquery/jquery.uploadify/uploadify.swf',             
'script': 'UploadHandler.ashx?esOIDs=<%=esOIDs %>',             
'cancelImg': '../../Scripts/jquery/jquery.uploadify/cancel.png',      
'folder': '../../FileUpLoad/',         
'queueID': 'fileQueue',            
'auto': false,            
'multi': true,               
'buttonText': '',              
'fileDesc' :'可选择类型：.doc/.rar/.docx/.ppt/.pptx/.xls/.xlsx/.pdf/.gif/.png/.bmp/.jpg/.mp4/.rar/.wmv/.avi/.zip',           
'fileExt': '*.doc;*.rar;*.docx;*.ppt;*.pptx;*.xls; *.xlsx;*.pdf;*.gif;*.png;*.bmp;*.jpg;*.mp4;*.rar;*.wmv;*.avi;*.zip',                 'sizeLimit': 1024 * 1024 * 1024,             
'buttonImg': '../../Scripts/jquery/jquery.uploadify/browse.png',     
'height':'20',            
'width': '50'            
 });       
  });
</script> 
</head> 
<body>   
  <form id="form1" runat="server">    
 <div id="fileQueue" style="height: 400px">     </div>     
<table>     
    <tr>          
   <td style="text-align: inherit">             
    <input type="file" name="uploadify" id="uploadify" onclick="return uploadify_onclick()" />     
            <input name="" onclick="javascript:$('#uploadify').uploadifyUpload()" type="button" style="height:20px"  value="上传" />             
    <input name="" onclick="javascript:$('#uploadify').uploadifyClearQueue()" type="button" style="height:20px"  value="取消上传" />        
     </td>        
 </tr>     
</table>   
  </form>
 </body> </html>

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用jquery uploadify上传插件上传文件

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