Loop through controls in wizard step

Question

How can I indentifiy all textbox controls in specific step in wizard control (without expicit FindControl).
I need some loop mechanism if possible.

structure of wizardstep is something like this

[code]
<asp:TemplatedWizardStep ID="Step2" runat="server" Title="Step2">
  <ContentTemplate>
  <div class="StepMain">
  <table class="style1">
  <tr>
  <td class="style11">
  Street</td>
  <td>
  <asp:TextBox ID="textbox1" runat="server" Width="180px"></asp:TextBox
  ...   [/code]