Hello Jeevitha,

Thank you for posting in our community.

When Activation behavior is enabled a cell is considered active when it is the current cell - the last to receive an action, such as a mouse click. The row or column that an active cell belongs to is considered active as well.

An elemnt can be activated by setting it in code. For example:

this.WebDataGrid1.Behaviors.Activation.ActiveCell = this.WebDataGrid1.Rows[0].Items[1];

Some further reference about Activation behavior could be found at the following link:

http://help.infragistics.com/doc/ASPNET/2014.2/CLR4.0/?page=WebDataGrid_Activation.html

I hope you find this information helpful.

Please let me know if you have any additional questions regarding this matter.