upload files

Handler :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;

namespace Payroll.Handler
{
    ///

    /// Summary description for DownloadAppraisalSheet
    ///

    public class DownloadAppraisalSheet : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            String fileName = String.Empty;
            String FolderPathQuery = String.Empty;
            fileName = HttpUtility.UrlDecode(context.Request.Params["fileName"]);
            FolderPathQuery = HttpUtility.UrlDecode(context.Request.Params["FolderPath"]);
            String FolderPath = context.Server.MapPath(FolderPathQuery + "\\" + fileName);
            FileInfo file = new FileInfo(FolderPath);
            if (file.Exists)
            {
                string ext = Path.GetExtension(FolderPath);
                string type = String.Empty;
                type = MimeType(ext);
                HttpContext.Current.Response.ContentType = type;
                HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename = {0}", System.IO.Path.GetFileName(FolderPath)));
                HttpContext.Current.Response.TransmitFile(FolderPath);
                HttpContext.Current.Response.Flush();
            }
            else {
           
           
            }
        }
        public static string MimeType(string Extension)
        {
            string mime = "application/octetstream";
            if (string.IsNullOrEmpty(Extension))
                return mime;

            string ext = Extension.ToLower();
            Microsoft.Win32.RegistryKey rk = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);
            if (rk != null && rk.GetValue("Content Type") != null)
                mime = rk.GetValue("Content Type").ToString();
            return mime;
        }
        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

File to Save Folder : Handler

using System;
using System.IO;
using System.Web;
using System.Web.SessionState;

namespace Payroll.Handler
{
    ///

    /// Summary description for ImagePhoto
    ///

    public class ImagePhoto : IHttpHandler, IRequiresSessionState
    {
        public void ProcessRequest(HttpContext context)
        {
            try
            {
                HttpContext.Current.Response.ContentType = "text/HTML";

                string FName = "";
                string replaceundersore = "";
                string FileName = "";
                HttpFileCollection hfc = HttpContext.Current.Request.Files;

                string imagename = HttpContext.Current.Request.QueryString["filename"];
                var folderArray = imagename.Split('/');

              
                var array = imagename.Split('_');
                string path = HttpContext.Current.Server.MapPath("~/EmployeePhoto/");
                if (!Directory.Exists(path))
                {
                    System.IO.Directory.CreateDirectory(path);
                }
                for (int index = 0; index < hfc.Count; index++)
                {
                    HttpPostedFile hpf = hfc[index];
                    // change here for IE 8, as file name returns the full file path.

                    if (hpf.ContentLength >= 0)
                    {
                        if (hpf.FileName.Contains(" "))
                        {
                            replaceundersore = hpf.FileName.Replace(" ", "-");
                        }
                        else
                        {
                            replaceundersore = hpf.FileName;
                        }

                        if (replaceundersore.Contains("_"))
                        {
                            FName = replaceundersore.Replace("_", "-");
                        }
                        else
                        {
                            FName = replaceundersore.Replace("_", "-");
                        }

                        int a = hpf.ContentLength;

                        //   string RandomNo = HttpContext.Current.Session["RandomNo"].ToString();
                        // FileName = RandomNo + FName;

                        FileName = FName;
                        string finalname = "";
                        // below code is for IE 8 as it fetch the full address of file.
                        int indexof = FileName.LastIndexOf("\\");
                        if (indexof != -1)
                        {
                            FileName = FileName.Substring(indexof + 1);
                        }

                        if (array[0] != null)
                        {
                            var fn = array[0].Substring(array[0].LastIndexOf('/') + 1);
                            finalname = fn + "_" + FileName;
                        }
                        else
                        {
                            finalname = FileName;
                        }
                    
                        hpf.SaveAs(path + "/" + finalname);
                     
                    }
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}




Jquery File


 
Sample To Call
   var obj={ FolderLetter: '/AppraisalFormLetter',
    FolderSheet: '/AppraisalFormSheet',

   DownloadAppraisal: function (FolderPath,FileName) {
        $.ajaxFileUpload({
            type: "POST",
            url: "../Handler/DownloadAppraisalSheet.ashx?filename=" + FileName + "&FolderPath=" + FolderPath,
            secureuri: false,
            fileElementClass: 'dynamicFileAppraisalFormSheet2', // File uploader Class name
            async: false,
            success: function () {

            },
            error: function (data, status, e) {
                commonNotification.ErrorMessage('Error in uploading the file.');
                return false;
            }
        });


    },

/// Import : Appraisal Form Sheet
    AppraisalFormSheetImportfile: function () {

        $.ajaxFileUpload({
            type: "POST",
            url: "../Handler/AppraisalSheetHandler.ashx?filename=" + oAppraisal.AppraisalFormSheet,
            secureuri: false,
            fileElementClass: 'dynamicFileAppraisalFormSheet',
            async: false,
            success: function () {
                oAppraisal.AppraisalFlag = 1;
            },
            error: function (data, status, e) {
                commonNotification.ErrorMessage('Error in uploading the file.');
                return false;
            }
        });
        return false;
    }
}


$(document).ready(function(){


  $('.downloadsSheet').live('click', function () {
    
        oAppraisal.AppraisalFormSheet = $(this).parent().parent().parent().find('.AppraisalSheet').text();
        oAppraisal.DownloadAppraisal(oAppraisal.FolderSheet, oAppraisal.AppraisalFormSheet);

        // window.open(oAppraisal.FolderSheet + '/' + oAppraisal.AppraisalFormSheet, 'Download');
    });
    $('.downloadsLetter').live('click', function () {
        oAppraisal.AppraisalFormLetter = $(this).parent().parent().parent().find('.AppraisalLetter').text();
        oAppraisal.DownloadAppraisal(oAppraisal.FolderLetter, oAppraisal.AppraisalFormLetter);

    });



});








 //---------------------Begin Import Upload Appraisal Form Sheet ---------------------------------------------------------

            var upAFSheet = $('#upAFSheet').val(); // File upload controler
            var fileAFSheetInput = $("#upAFSheet")[0];

            try {
                var fileSheetSize = 0;
                //for IE
                if ($.browser.msie) { //before making an object of ActiveXObject,
                    //please make sure ActiveX is enabled in your IE browser
                    var objFSO = new ActiveXObject("Scripting.FileSystemObject");
                    var fileSheetPath = $("#upAFSheet")[0].value;
                    var objSheetFile = objFSO.getFile(fileSheetPath);
                    fileSheetSize = objSheetFile.size;
                    //size in kb fileSize = fileSize / 1048576; //size in mb 
                }
                else {
                    fileSheetSize = fileAFSheetInput.files[0].size;
                }
            }
            catch (err1) {
                alert('Tools -> Internet Options -> choose the Security tab Click the Custom Level button Enable the following settings: Run ActiveX controls and plug-ins Initialize and script ActiveX controls not marked as safe.');
                $('#btnCity').removeAttr('disabled');
                return false;
            }


            if (fileSheetSize > '25600000') {
                commonNotification.ErrorMessage("File exceeds 25MB.");
                return false;
            }



            //changed as not working with chrome.
            upAFSheet = upAFSheet.replace("C:\\fakepath\\", "");

            // below code is for IE 8 as it fetch the full address of file.
            var indexof = upAFSheet.lastIndexOf('\\');
            var fileName = '';
            if (indexof != -1) {
                upAFSheet = upAFSheet.substring(indexof + 1, upAFSheet.length)
            }

            var nameAFSheet1 = upAFSheet.replace(/ /g, "-");
            var nameAppraisalSheet = nameAFSheet1.replace(/_/g, "-");
            var Time = new Date();
            Time = Time.getHours() + Time.getMinutes() + Time.getSeconds() + "_";

            oAppraisal.AppraisalFormSheet = Time + nameAppraisalSheet;

            oAppraisal.AppraisalFormSheetImportfile();

            //---------------------End Import Upload Appraisal Form Sheet ---------------------------------------------------------