Avoid Page Reload on every Event

Question

Hi Am using multiple dropdowns multiple textboxes and “ modalpopupextender” in my page I am fetching the data from batabase to textboxes using dropdown_SelectedIndexChanged event. If I change the value of drop down Page will flickering(displays Popup for some time); If I use autopostback=false for dropdown data will not fetching into textboxes. How to avoid blinking popup on every event.

Rajeesh Menoth · Answer

Hi You can use Asp.net Update Panel or Jquery Ajax method to avoid Post Back.. Reference : http://www.aspsnippets.com/Articles/Populate-Bind-ASPNet-DropDownList-using-jQuery-AJAX-and-JSON-in-C-and-VBNet.aspx http://www.aspsnippets.com/Articles/AJAX-Cascading-DropDownList-using-jQuery-in-ASP.Net.aspx

Sandy Surwase · Answer

if you want to avoid reload then go will ajax.you are using modelpopup can you show your code

Francis · Answer

If I change the value of drop down Page will flickering This is the normal behaviour of an ASP.Net Web form page. In order to avoid this you should consider to use Updatepanel. The below Stackoverflow discussion gives a complete solution : http://stackoverflow.com/questions/1256943/dropdownlist-in-updatepanel Also if you face any issue hope the below urls are helpful: http://www.aspforums.net/Threads/213448/How-to-refresh-ASPNet-UpdatePanel-on-DropDownList-change-in-ASPNet/ Hope this helps a bit!

Ranjit Powar · Answer

You should use web method and call it from jquery. Check this http://www.aspsnippets.com/Articles/Calling-ASPNet-WebMethod-using-jQuery-AJAX.aspx