文件无刷新上传

http://www.cnblogs.com/caodaiming/archive/2009/05/13/1456273.html

http://download.csdn.net/source/1378654

不好意思，复制错了网站http://www.111cn.net/wy/139/c39f19a319636978d2364cabc26cffe4.htm

用swfupload 可以实现无刷新多文件上传

引用到的js   ----ajaxfileupload.js
<script type="text/javascript">
  function ajaxFileUpload(filename) {
            $.ajaxFileUpload
        (
        {
            url: 'imageFile.ashx?param=uploadfile&filename='+filename,
            secureuri: false,
            fileElementId: filename,
            dataType: 'json',
            success: function(data, status) {
                if (typeof (data.error) != 'undefined') {
                    if (data.error != '') {
                        alert(data.error);
                    } else {
                       alert(data.msg);
                       insertimgBox(filename,data.filepath);
                    }                 }
            }
            ,
            error: function(data, status, e) {
                alert(e);
            }
        }
        );
                    return false;
        }
</script>页面
<input type="file" runat="server" id="filepost_PeopleHealth"/><button id="button7" onclick="return ajaxFileUpload('filepost_PeopleHealth');">上传</button>imageFile.ashx文件using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.IO;
using System.Drawing;namespace AjaxLibrary
{
   public class imageFile:IHttpHandler
    {
       bool IHttpHandler.IsReusable
       {
           get { return false; }
       }
       void IHttpHandler.ProcessRequest(HttpContext context)
       {
           context.Response.ContentType = "text/html";//设置输出的类型***

           string param=context.Request.QueryString["param"];//类型           string filenames = context.Request.QueryString["filename"];

           string error = "";
           string msg = "";
           string filePath = "";

           switch (param)
           {
               case "uploadfile":
                   bool boolen = false;
                   HttpPostedFile postFile = context.Request.Files[filenames];//httpPostFile
                   if (postFile.ContentLength == 0)
                   {
                       error = "无效的文件";
                   }
                   else
                   {
                       string mapPathDir="~/upload_files/";
                       if(System.IO.Directory.Exists(context.Server.MapPath(mapPathDir))!=true)
                       {
                         System.IO.Directory.CreateDirectory(context.Server.MapPath(mapPathDir));
                       }
                       UploadFile(context, postFile, mapPathDir,boolen,out error,out msg,out filePath);
                   }
                   string result = "{error:'"+error+"',msg:'"+msg+"',filepath:'"+filePath+"'}";                   context.Response.Output.Write(result);
                   break;
               case "delfile":                  string RequestFilePath = context.Request.QueryString["filepath"];//获取要删除的图片的路径()  如:upload_files/XXXXYYY.gif                  DelImgFile(context, RequestFilePath, out error, out msg);
                  string delresult = "{ error:'" + error + "', msg:'" + msg + "'}";                   context.Response.Output.Write(delresult);                   break;
           }
       }       void UploadFile(HttpContext context,HttpPostedFile httppostFile,string paths,bool boolBenl,out string err,out string msg,out string filepath)
       {
           string fileName =Path.GetExtension(httppostFile.FileName).ToLower();
           string firstName = DateTime.Now.ToString("yyyyMMddHHmmss");
           string ThumbName = "Thumb_" + DateTime.Now.ToString("yyyyMMddHHmmss");
           string newNamePath =paths+firstName + fileName;
           string ThumbNamePath =context.Server.MapPath(paths + ThumbName + fileName);
           string mapPathStr = context.Server.MapPath(newNamePath);
           httppostFile.SaveAs(mapPathStr);
           if (boolBenl == true)
           {
               CoverDoubleImage(httppostFile,202,200,ThumbNamePath);
           }
           err = "";
           msg = "上传成功";
           filepath = firstName + fileName;
       }       //删除目录文件
       void DelImgFile(HttpContext context, string imgName,out string error,out string msg)
       {
           if (imgName.Length != 0 && imgName.IndexOf('/')>-1)
           {
               string paths = context.Server.MapPath(imgName);               string Thumbpaths = context.Server.MapPath(imgName.Split('/')[0] + "/Thumb_" + imgName.Split('/')[1]);
               try
               {
                   if (System.IO.File.Exists(paths) == true)
                       File.Delete(paths);
                   if (System.IO.File.Exists(Thumbpaths) == true)
                       File.Delete(Thumbpaths);
               }
               catch (Exception ee) { error = ee.Message; }
               error = "";
               msg = "删除成功";
           }
           else
           {
               error = "";
               msg = "无效的请求";
           }
       }       #region 上传图片并自动生成缩略图JPG
    /// <summary>
    /// 上传图片并自动生成缩略图JPG
    /// </summary>
    /// <param name="FileUpload1">FileUpload控件引用</param>
    /// <param name="tWidth">缩略图宽度</param>
    /// <param name="tHeight">缩略图高度</param>
    /// <param name="savePath">缩略图路径</param>
       public static void CoverDoubleImage(HttpPostedFile FileUpload1, int tWidth, int tHeight, string savePath)
    {
        //检查上传文件的格式是否有效
        if (FileUpload1.ContentType.ToLower().IndexOf("image") < 0)
        {
            // Use.JS.Alert("图片格式错误");
            return;
        }        //生成原图
        System.IO.Stream oStream = FileUpload1.InputStream;
        System.Drawing.Image oImage = System.Drawing.Image.FromStream(oStream);        int oWidth = oImage.Width; //原图宽度
        int oHeight = oImage.Height; //原图高度        //生成缩略原图
        Bitmap tImage = new Bitmap(tWidth, tHeight);
        Graphics g = Graphics.FromImage(tImage);
        g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; //设置高质量插值法
        g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;//设置高质量,低速度呈现平滑程度
        g.Clear(Color.Transparent); //清空画布并以透明背景色填充
        g.DrawImage(oImage, new Rectangle(0, 0, tWidth, tHeight), new Rectangle(0, 0, oWidth, oHeight), GraphicsUnit.Pixel);
        try
        {
            //以JPG格式保存图片
            //oImage.Save(savePath, System.Drawing.Imaging.ImageFormat.Jpeg);  //保存原图
            tImage.Save(savePath,System.Drawing.Imaging.ImageFormat.Jpeg);  //保存缩略图
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            //释放资源
            oImage.Dispose();
            g.Dispose();
            tImage.Dispose();
        }
    }
    #endregion    }
}

不好意思俺试了不行....不知道哪里出问题了,根本就没调用哪个ASHX文件

忘记说了,,还要注册
<httpHandlers>
      <remove verb="*" path="*.asmx"/>
      <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
      <add path="*/coolite.axd" verb="*" type="Coolite.Ext.Web.ResourceManager" validate="false"/>
      <add path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" validate="false"/>      <add path="imageFile.ashx" verb="*" type="AjaxLibrary.imageFile,AjaxLibrary"/>    </httpHandlers>还有那个引用的那个js要到网上下个，

未能加载文件或程序集“AjaxLibrary”或它的某一个依赖项。系统找不到指定的文件

首先：那个js网上自己下
其次：AjaxLibrary是我自己的程序集名称。你根据你项目的情况来定啊，
再其次：注册我已经和你说了，代码该帖的都帖出了，
最后。再不懂。我只能无语。
给你的代码你自己要研究。不要拿着就用，要明白什么意思

我已传上去了去下载
http://download.csdn.net/source/2503395

http://www.codefans.net/soft/4029.shtml这里不需要积分

我擦十分还说不用....
在请教一个问题,用这个控件的input file 我用click模拟点击事件,文件是选中了但是却不进提交事件,您知道咋么回事么?

您的代码是有问题滴,不过俺最后是用ajaxfileupload.js实现的,分给你了!

调试易

文件无刷新上传

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