How to add a column to RadGridView with a button in some cells

How can I create a button inside a column for some row and not the other.

I tried to use the command line but this will add a button to every row

here is what I have done

            GridViewCommandColumn commandColumn2 = new GridViewCommandColumn();
            commandColumn2.Name = "UpdateInfo";
            commandColumn2.UseDefaultText = true;
            commandColumn2.DefaultText = "View More Info";
            commandColumn2.FieldName = "UpdateInfo";
            commandColumn2.HeaderText = "";
            radGridView1.MasterTemplate.Columns.Add(commandColumn2);
            radGridView1.CommandCellClick += new CommandCellClickEventHandler(radGridView1_CommandCellClick);

How can I only show the button for some rows and not the others