I have a asp.net user control in a SharePoint solution. This user control uses Telerik Asp.net Ajax controls to provide a basic datagrid CRUD operations. I use this grid in a web part on a page in SharePoint 2013.
I have a datagrid which is wrapped with RadAjaxPanel to ajaxify it.
It all works fine. However, let's say, I click the add new record button and it opens a form to fill, if I leave that form intact for a minute, then start to fill and submit, it does postback and cancels form.
However, if I click on add new record and fill the form and submit, it all works fine. I guess there is a timeout somewhere which causes this, my two days of research did not help me to find it.
I was just wondering whether you have ever come across with this issue. I guess it does not matter whether it is Asp.net update panel or RadAjaxUpdatePanel, even if you have seen this issue on Asp.net update panel, that will help too.
I did not know what part of the code I should share, please let me know if you need any code to understand this issue.
There must be something on SharePoint script manager, and ajax manager, but I have no idea what.
It looks like it is a known bug in SharePoint 2013. People suggested to install December 2014 CU to solve it, but it did not solve it. Someone mentioned in this link to make request to server via javascript event given interval. As my page does postback if I leave it about 20-30 sec idle, I call a random SP web service evet 15 sec which seems to resolve my issue. Please see below link which helped me to workaround this.