GridView last row font Bold required

Hi,

I am using ASP.NET 2.0

I am using Gridview, its autogenerate column is false and its columns are;

Column 1 - Sr. No
Column 2 - Purchase Order No
Column 3 - Amount Claimed
Column 4 - Amount Approved


In the last row of the gridview I show the totals of Amount Claimed & Amount Purchase. It all are working fine. But I want this total show in bold, so I use html <b> tag but it not working.

Please advise me any solution. Thanks
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