Hello Mithilesh,

As it is state in the article you could set the following in order to have the desired behavior, as I have modified it a little to be closer to your expectations: 

void ultraGrid1_InitializeLayout(object sender, Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
{
   e.Layout.Override.AllowUpdate = Infragistics.Win.DefaultableBoolean.False;          e.Layout.Override.CellClickAction = Infragistics.Win.UltraWinGrid.CellClickAction.CellSelect;
}

Please feel free to let me know if you still have any other questions with this matter.

Hi Danko,

Thanks for the response.I tried deactivating the column using 

this.ultraGrid1.DisplayLayout.Bands[0].Columns[0].CellActivation = Activation.Disabled;

But it actually Deactivated the grid. The grid became gray. But what I need is to make it ReadOnly so that the user will not be able to select/activate any record. not Deactivate the grid.

Mithilesh