How to empty all TextBoxes of the page at one shot?

using System;
using System.Web.UI.WebControls;
using System.Web.UI;
using System.Web;

public class MyClass

{

public static void ResetTextBoxes(Control oControl)

{

     foreach (Control c in oControl.Controls)

     {

        if (c is TextBox)

        {

             TextBox t = (TextBox)c.FindControl(c.ID);

             t.Text = string.Empty;

        }

          if (c.HasControls())

          {

             ResetTextBoxes(c);

          }
        }
    }//ResetTextBoxes

}

Call the above function as: MyClass.ResetTextBoxes(this);