Hi Alan,

Thanks for your quick response. Not insisting you toomuch for an answer, can you give me some idea why one should be Postback trigger and another should be ending up in toogleRow client side javescript trigger, for expanding the child grid.

IE 9
<a href="BLOCKED SCRIPTigtbl_doPostBack('Grid$m_grid','Toggle:_0');"><img src="Images/rt_expand.gif"  border='0'></a>

Google Chrome
<img src="Images/rt_expand.gif" border='0' onclick="igtbl_toggleRow('Gridxmxgrid','Gridxmxgrid_r_0');" />

 Thanks in advance.

Alright, I started working on it and everything is going good except this one for now.

We are migrating from ASP.Net 2.0 to ASP.Net 4.0 Infragistics UltraWebGrid is also migrated to Infragistics35.WebUI.UltraWebGrid.v10.3

The Infragistics hierarchical grid, while drilling down to child grid,  produces two different versions of behavior in in IE 9 and Google Chrome  39.0.2171.99 m. In IE 9, the toggleRow, a javascript function kicks off and do the job nicely. No postback in IE 9. But in Chrome, it does a Postback and the page dies. If the ViewState is enabled, it succeeds in drilling down the child grid but the Postback still occurs. Any idea, how to attain the No-Postback situation in Chrome as well?