Assigning text to a label in a dynamic control

[Steven]

From a fairly good understanding of traditional ASP I am
taking my first tentative steps into C#. Within Visual
Studio, my first test is as follows:

Default.aspx contains a placeholder
---------
<asp:placeholder id="phPage"
runat="server"></asp:placeholder>
---------

The code behind (Default.aspx.cs) loads a web user control
into the placeholder
---------
// Create layout web user control and add to page
placeholder
Control ctrlLayout = new Control();
ctrlLayout = LoadControl("UI/Layout.ascx");
phPage.Controls.Add(ctrlLayout);
---------

Layout.ascx itself contains a placeholder
---------
<asp:placeholder id="phContent"
runat="server"></asp:placeholder>
---------

The code behind (Layout.ascx.cs) loads a web user control
into the placeholder
---------
// Create text web user control and add to content
placeholder
Control ctrlText = new Control();
ctrlText = LoadControl("UI/Text.ascx");
phContent.Controls.Add(ctrlText);
---------

Finally, Text.ascx contains a label
---------
<asp:Label id="lblText" runat="server"></asp:Label>
---------

My intent is to be able to present the same text string
using different versions of Layout.ascx and Text.ascx
(e.g., Layout_001.ascx, Layout_002.ascx) and so ideally
would like to be able to assign a text string to
lblText.Text in the code behind Default.aspx. I would like
to know if this is possible and if so how to achieve it.

Thanks in advance.
Steven