I apologize, my post was unclear - I meant to say SfDashboardLayout instead of SfGrid... <ContentTemplate> works as an element inside of an DashboardLayoutPanel. But, <Content> works as well. So, for example:
<SfDashboardLayout ...>
<DashboardLayoutPanel...>
<ContentTemplate>
<div class="panel-content">
This is my stuff
</div
</ContentTemplate>
</DashboardLayoutPanel>
</SfDashboardLayout>
...produces the same as:
<SfDashboardLayout ...>
<DashboardLayoutPanel....>
<Content>
<div class="panel-content">
This is my stuff
</div
</Content>
</DashboardLayoutPanel>
</SfDashboardLayout>