Uploadify+asp.net (C #) bulk upload large file instance source code

Recent project requirements to bulk upload large files, the project is developed with ASP.net (C #), Uploadify upload components personally think very good, support asp.net, PHP, etc., this article we use uploadify to achieve bulk upload large files.


Effect Chart:

Front-end Code with comment Description:

Enable bulk upload:

javascript:$ (' #uploadify '). Uploadify (' upload ', ' * '): Enable bulk upload.

About large file uploads

In the debug upload process, found large files (greater than 20M) on the 500 error, server configuration can be uploaded 500M files. I was reminded that it should be the webconfig of the request content size limit problem. You should follow the following settings:

Sets the size of the request data.


<system.web>
<compilation debug= "true" targetframework= "4.0"/>
<!--set up a large file request-->
& Lt;httpruntime maxrequestlength= "1073741824" executiontimeout= "3600"/>
</system.web>

The server-side code is as follows:


Public void processrequest (httpcontext context) {    context.
response.contenttype =  "Text/plain";     //receive the uploaded file     httppostedfile file = context.
request.files["Filedata"];     //other parameter     //string somekey = context.
request["Somekey"];     //string other = context.
request["Someotherkey"];     //get the save path to the file     string uploadpath =    
     httpcontext.current.server.mappath ("uploadimages"  +  "\");     //to determine whether the uploaded file is empty     if  (file != null)      {        if  (! Directory.Exists (Uploadpath))         {              directory.createdirectory (Uploadpath); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP}         //Save file          file. SaveAs (uploadpath + datetime.now.tostring ("Yyyymmddhhmmsss")  + file. Filename.substring (file. Filename.lastindexof (".")
 - 1));
        responsemodel rm = new responsemodel ();         rm.
id = 1;
        rm.state = 0;         rm.
msg =  "Success";         context. Response.Write (Newtonsoft.Json.JsonConvert.SerializeObject (RM));//is passed to the foreground of data           else     {        context. Response.Write ("0");  //to the front desk datA    &nbsp}} public class responsemodel {    public int  id { get; set; }     public int state { get;  set; }     public string msg { get; set;&nbsp}}

The returned objects after the successful upload can be serialized using JSON. It is then returned to the client invocation. It is advisable to convert the returned JSON string to a JSON object at the time of the client invocation, which is easy to use.

How to handle the data returned by the upload result:


var obj = (new Function ("return" + data));//data for the returned JSON string