[Solved] AutoPostBack stops working after placing Crystal Report Viewer on page in ASP.Net

vs2010

VB.NET CODING

Sir,

On my page I have a textbox with auto post back which populates a Grid View and on Gridview Selection Some details are  shown everything goses fine but as I place Crystal Report Viewer on the page all autopostback stops and even select of GridView also not work .  It is very strange pl. guide.

Thanks