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I am using jquery.MultiFile.js to upload multiple files using fileupload control in an update panel and using trigger to postback on button click but on first click it uploads only one file and starts uploading multiple files after that below is my code
 HttpFileCollection fileCollection = Request.Files;
            for (int i = 0; i < fileCollection.Count; i++)
                HttpPostedFile uploadfile = fileCollection[i];
                string file = Path.GetFileName(uploadfile.FileName);
                string extension = Path.GetExtension(file);
                if (uploadfile.ContentLength > 0)
                    string no = Guid.NewGuid().ToString().Substring(0, 4);
                    string path = @"../Gallery/";
                    string serverpath = Server.MapPath(path);
                    string fullpath = serverpath + no + file;
                    valid += file + " saved successfully\\n";
Posted 13-Apr-13 3:56am
Edited 13-Apr-13 4:02am

1 solution

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Solution 1

Provide the UpdatePanel for file Upload control and make a PostBackTrigger for Import button.
lucky050 at 15-Apr-13 9:11am
I am already using a postback trigger for import button and its working but it uploads only one file on page load after that it starts working fine

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