|    A    |    B C    |    D E / F   |

|    A    |    B      |    D         |
|         |    C      |    E / F     |

You can do it without templates. Just set HtmlEncode=”False” on the headers with <br /> tags in them.

Example:

<asp:GridView ID=”GridView1″ runat=”server” DataSourceID=”Data”><Columns>     <asp:BoundField HeaderText=”First Line<br />Second Line” DataField=”ContactID”                 HtmlEncode=”False” />     <asp:BoundField HeaderText=”Second” DataField=”FirstName” />     <asp:BoundField HeaderText=”Third<br />Extra” DataField=”Title” /> </Columns></asp:GridView>

If you use a template field, you can have fine grain control the header content in the header template:

<asp:templatefield>     <headertemplate>       D<br />       E / F     </headertemplate>     <itemtemplate>         <%#Eval(“MyField”)%>     </itemtemplate></asp:templatefield>