Render Macro control on page load in umbraco template - asp.net

Question

I am trying to load the razor script which exists as a separate macro in umbraco. I am using umbraco 4.7.0
I am basically doing geo-targeting and hence need to run the script each time on a page load. so I am looking for something like :
<script type="c#" runat="server">
protected void Page_Load(object sender, EventArgs e)
{
Call the Macro here
}
Obviously I can do this in the template
<umbraco:Macro Alias="GeoTargetting" runat="server" />
but I need to call this macro before any control is loaded in the page.
PLease help.
Thanks

Answer 1

This appears to work alright:
Template:
<umbraco:Macro Alias="Sandbox" runat="server"></umbraco:Macro>
<asp:Label runat="server" ID="Label1" Text="Yo"></asp:Label>
Macro Script:
#using System.Web.UI.WebControls
#using umbraco.MacroEngines
#inherits DynamicNodeContext
#{
Page page = HttpContext.Current.Handler as Page;
page.Load += new EventHandler(page_Load);
}
#functions
{
static void page_Load(object sender, EventArgs e)
{
Page page = sender as Page;
Label label = FindControlRecursive(page, "Label1") as Label;
label.Text = "Hello";
}
private static Control FindControlRecursive(Control Root, string Id)
{
if (Root.ID == Id)
return Root;
foreach (Control Ctl in Root.Controls)
{
Control FoundCtl = FindControlRecursive(Ctl, Id);
if (FoundCtl != null)
return FoundCtl;
}
return null;
}
}
Note: The FindControlRecursive() method is from this forum thread.