File uploading in AJAX updatepanel without full postback
问题 I have a update panel, in the update panel I have fileupload control and button control, On button click, I need the file that I have upload in the fileupload control in updatepanel. Exact scenario, I have 8 tabs on page, each tab contains too much information, One of the tab is Attachment, when user click on Add New Attachment Modal Popup shown, Modal contains detailsview in Updatepanel and in the detailsview I have fileupload control, when user hit save button, detailsview inserting event