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"UpdateRowBatch", "UpdateRowBatchEventHandler" giving error after using "WebDataGrid" instead of old "UltraWebGrid"

I am converting Infragistics 2010 v2 CLR3.5 to Infragistics 2014 v2 using 4.5 CLR using Visual Studio 2013 Professional Update 4. I am getting following error while building the project. Please reply immediately..........

Below code is Old Infragistics - 2010 v2 - which is working fine using "UltraWebGrid"

 protected void Page_Init(object sender, EventArgs e)
    grid_1.UpdateRowBatch += new Infragistics.WebUI.UltraWebGrid.UpdateRowBatchEventHandler(this.grid_UpdateRowBatch); 

But after upgrading, in new Infragistics - 2014 v2 - while using "WebDataGrid" instead of "UltraWebGrid", error is coming..........

WebDataGrid does not contain definition for "UpdateRowBatch" as well as "UdateRowBatchEventHandler"

protected void Page_Init(object sender, EventArgs e)
   grid_1.UpdateRowBatch += new WebDataGrid.UpdateRowBatchEventHandler(this.grid_UpdateRowBatch);

Let me know what should I use for following:
1) UpdateRowBatch
2) UpdateRowBatchEventHandler