Asp. NET plugin uploadify batch upload file Full use tutorial _ Practical skills

uploadify Batch upload file complete use of the tutorial for your reference, the specific content as follows

1. First prepare uploadify js file, a lot of online search

2. Upload page upfilepage.aspx

Key code:

GetFile () method in the background:

<summary>///Get cookie attachment information///</summary>///<returns></returns> protected string GetFile ()
{#region Get cookie attachment information StringBuilder strhtml = new StringBuilder ();
HttpCookie Filecookie = request.cookies["Filecookie"]; if (Filecookie!= null) {string[] Filearray = new string[1]; if (FileCookie.Value.Contains ("|")) Filearray = filecookie.v Alue.
Split (' | ');
else filearray[0] = Filecookie.value; foreach (String objfile in Filearray) {if!string. IsNullOrEmpty (objfile) && objfile.contains (",")) {string[] file = Objfile.split (', '); Strhtml.append (@ "<
Div class= ' uploadifyqueueitem ' > ');
Strhtml.append (@ "<div class= ' Cancel ' >");
Strhtml.append ("<a href= ' Javascript:deletefile (\" "+ file[1] +" \ ") ' ></a> ');
Strhtml.append (@ "<span class= ' pErcentage ' >-100%</span><div class= ' uploadifyprogress ' > '); Strhtml.append (@ "<div class= ' Uploadifyprogressbar ' style= ' width:100%; ')
> ");
Strhtml.append (@ "</div>");
Strhtml.append (@ "</div>");
Strhtml.append (@ "</div>");
}} return strhtml.tostring ();

 #endregion}

General handlers under 3.UploadAction folders:

public void ProcessRequest (HttpContext context) {context.
Response.ContentType = "Text/plain"; String operate = context.
request["operate"]; if (operate = = "DeleteFile") {#region Delete file attachment information//Get file path string FilePath = Context. Server.MapPath (context.
request["file"]); Determine if the file exists if (file.exists (FilePath)) File.delete (FilePath);//delete file//Get attachment cookie information HttpCookie Filecookie = context.
request.cookies["Filecookie"];
string[] Filearray = new String[1]; if (Filecookie!= null) {FilePath = Filepath.remove (0, Filepath.indexof ("Upfiles")).
Replace ("\", "/");
if (FileCookie.Value.Contains ("|")) Filearray = FileCookie.Value.Split (' | ');
else filearray[0] = Filecookie.value;
String strfile = ""; for (int i = 0; i < filearray.length i++) {if (!filearray[i).
Contains (FilePath)) strfile + = Filearray[i] + "|";
} if (Strfile.contains ("|")) strfile = Strfile.remove (strfile.length-1);
Filecookie.value = strfile;
Filecookie.expires = DateTime.Now.AddDays (1);
Filecookie.httponly = true; Context. Response.apPendcookie (Filecookie);
StringBuilder strhtml = new StringBuilder ();
if (FileCookie.Value.Contains ("|")) Filearray = FileCookie.Value.Split (' | ');
else filearray[0] = Filecookie.value; foreach (String objfile in Filearray) {if!string. IsNullOrEmpty (objfile) && objfile.contains (",")) {string[] file = Objfile.split (', '); Strhtml.append (@ "<
Div class= ' uploadifyqueueitem ' > ');
Strhtml.append (@ "<div class= ' Cancel ' >");
Strhtml.append ("<a href= ' Javascript:deletefile (\" "+ file[1] +" \ ") ' ></a> ');
Strhtml.append (@ "<span class="
Percentage ' >-100%</span><div class= ' uploadifyprogress ' > '); Strhtml.append (@ "<div class= ' Uploadifyprogressbar ' style= ' width:100%; ')
> ");
Strhtml.append (@ "</div>");
Strhtml.append (@ "</div>"); strHTML.
Append (@ "</div>"); }} context.
Response.Write (Strhtml.tostring ());
#endregion} else if (operate = = "GetFile") {#region Get the uploaded attachment and show StringBuilder strhtml = new StringBuilder (); HttpCookie Filecookie = context.
request.cookies["Filecookie"]; if (Filecookie!= null) {string[] Filearray = new string[1]; if (FileCookie.Value.Contains ("|")) Filearray = filecookie.v Alue.
Split (' | ');
else filearray[0] = Filecookie.value; foreach (String objfile in Filearray) {if!string. IsNullOrEmpty (objfile) && objfile.contains (",")) {string[] file = Objfile.split (', '); Strhtml.append (@ "<
Div class= ' uploadifyqueueitem ' > ');
Strhtml.append (@ "<div class= ' Cancel ' >");
Strhtml.append ("<a href= ' Javascript:deletefile (\" "+ file[1] +" \ ") ' > ');
Strhtml.append (@ "</a>");
Strhtml.append (@ "</div>"); Strhtml.append (@ "<span class= ' fileName ' >" + httputility.urldecode (file[0]) + "</span><span class= ' percentage ' >-100%</span><div class= ' uploadifyprogress ' > '); Strhtml.append (@ "<div class= ' Uploadifyprogressbar ' style= ' width:100%; ')
> ");
Strhtml.append (@ "</div>");
Strhtml.append (@ "</div>");
Strhtml.append (@ "</div>"); }} context.
Response.Write (Strhtml.tostring ());

 #endregion}}

4. Upload file UPLOADHANDLER.ASHX General processing program code, file upload path can be set according to the plot needs free:

public void ProcessRequest (HttpContext context) {context.

Response.ContentType = "Text/plain"; HttpCookie Filecookie = context.
request.cookies["Filecookie"]; if (Filecookie!= null) {string[] Filearray = new string[1]; if (FileCookie.Value.Contains ("|")) Filearray = filecookie.v Alue.
Split (' | ');
if (filearray.length >= 5) return;
else {Filecookie = new HttpCookie ("Filecookie"); filecookie.value = ""; Context.
RESPONSE.COOKIES.ADD (Filecookie); String Aspxurl = context. Request.Path.Substring (0, context.

Request.Path.LastIndexOf ("/") + 1);

File save directory path String savepath = "/upfiles/";

File save Directory URL String saveurl = "/upfiles/"; if (context. request.cookies["Member"]!= null)//{//Savepath + = context.
request.cookies["Member" ["MemberID"] + "/"; Saveurl + = context.
request.cookies["Member" ["MemberID"] + "/"; String member = Guid.NewGuid (). ToString (). Trim ().
Replace ("-", "");
Savepath + + "/";

Saveurl + + "/"; Defines the file extensions allowed to be uploaded/*hashtable exttable = new HashtablE ();
Exttable.add ("image", "gif,jpg,jpeg,png,bmp");
Exttable.add ("Flash", "swf,flv");
Exttable.add ("Media", "Swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb,mp4"); Exttable.add ("File", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2,swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf

, rm,rmvb,mp4,wps "); *///maximum file size int maxSize = 5242880; Httppostedfile Imgfile = context.
request.files["Imgfile"]; /*if (Imgfile = = null) {showerror ("Please select File.") ");
} */String Dirpath = context.
Server.MapPath (Savepath); if (! Directory.Exists (Dirpath)) {directory.createdirectory (Dirpath);//showerror ("Upload directory does not exist.")

");
} String dirname = context.
request.querystring["dir"]; if (String.IsNullOrEmpty (dirname)) {dirname = "file";}/*if (!exttable.containskey (dirname)) {showerror ("directory name is incorrect. ");
}
* * String fileName = imgfile.filename; String Fileext = path.getextension (fileName).


ToLower (); /*if (String.IsNullOrEmpty (fileext) | | Array.indexof ((((String) exttable[dirname]). Split (', '), fileext.substring (1). ToLower ()) = = = 1) {ShoweRror ("The upload file name extension is an disallowed extension.") \ nthe only "+ ((String) exttable[dirname]) +" format is allowed.
");
} if (Dirname.contains ("image") {if (Imgfile.inputstream = null | | imgFile.InputStream.Length > MaxSize) {showerror (" The upload file exceeds the 5M size limit. ");
}
}
*///Create folder Dirpath + + + dirname + "/";
Saveurl + = dirname + "/"; if (!
Directory.Exists (Dirpath)) {directory.createdirectory (Dirpath);}
String ymd = DateTime.Now.ToString ("YyyyMMdd", datetimeformatinfo.invariantinfo);
Dirpath + = Ymd + "/";
Saveurl + = Ymd + "/"; if (!

Directory.Exists (Dirpath)) {directory.createdirectory (Dirpath);}
String NewFileName = DateTime.Now.ToString ("Yyyymmddhhmmss_ffff", datetimeformatinfo.invariantinfo) + Fileext;

String FilePath = Dirpath + newfilename;

Imgfile.saveas (FilePath);

String FILEURL = Saveurl + newfilename;
/*hashtable hash = new Hashtable ();
hash["error"] = 0;
hash["url"] = FILEURL; Context. Response.AddHeader ("Content-type", "text/html;
Charset=utf-8 "); Context.
Response.Write (Jsonmapper.tojson (hash)); Context. Response.End (); */if (fIlecookie!= null) {string strfile = Filecookie.value; if (!string.
IsNullOrEmpty (strfile)) strfile = strfile + "|" + Httputility.urlencode (fileName) + "," + fileUrl;
else strfile = Httputility.urlencode (fileName) + "," + fileUrl;
Filecookie.value = strfile;
Filecookie.expires = DateTime.Now.AddDays (1);
Filecookie.httponly = true; Context.
Response.appendcookie (Filecookie); } context.
Response.Write ("1"); Context.
Response.End ();
 }

5. All code to knock OK, you can reap the results:

The above is the entire content of this article, I hope to help you learn, but also hope that we support the cloud habitat community.