add controls dyanmically in Control Template

[salon]

I need to add styles for the controls in a panel dynamically, I have created object of the control classes and setted the properties like this

properties.Add(TextBox.FontFamilyProperty, "Arial");

Now I want to add a ControlTemplate similarly, I have created object of ControlTemplate like this

       ControlTemplate ctrl = new ControlTemplate();
        ctrl.TargetType = typeof(edtPanel);

        TextBlock txtbl = new TextBlock();
        txtbl.Text = "Test Cotnrol Tempalte";

        properties.Add(TextBox.TemplateProperty, ctrl);

edtPanel is the panel name where i need to add all the controls Now i want to add the txtbl inside the ControlTemplate ctrl, but I don't have any idea how??? Does anybody help me? Thanks in advance,