ASP.NET GridView - Header always bold

GridView uses a table and creates a <th> tag for the header, which will bold all the text generated by the GridView. Here's a simple solution:

Set a style:

<style>
.GridViewHeaderStyle th {
  font-weight: normal;  
}
</style>

And apply it to your GridView:

<asp:GridView ID="grdSomeGrid" runat="server" CssClass="GridViewHeaderStyle">
...
</asp:GridView>