FileUpload Control in Update Panel using ASP.NET AJAX

Generally We face Problem with Fileupload control & tree view when place inside Update control.

This cen be solved in many ways,

1- can use HTML Fileupload control in place of asp.net fileupload control

2-refer

http://www.c-sharpcorner.com/UploadFile/prathore/FileUpload04292009022804AM/FileUpload.aspx

3- U can add trigger in update panel ,if any of the event is not fired.