Infragistics is dedicated to helping you solve this issue.  Our team and I have done an initial review of your case and as David mentioned, you could do this with column templates.  You can find more information on the column templates here: http://help.infragistics.com/NetAdvantage/ASPNET/2012.1/CLR4.0/?page=WebDataGrid_Column_Templates.html

Here is also a sample for using cell and column templates: http://ko.infragistics.com/products/aspnet/sample/data-grid/using-cell-and-column-templates

If you need any further assistance with this please let me know and I'll be glad to help.

Hi Alan,

The grid by default will not show this.  What you could do is to have two columns.  The first will be templated and the template would show field 1 over field 3 in each cell, along with having a header template of the two texts.  The second column could be a bound column showing field 2.

regards,
David Young