Clear all controls in a webform

private void Clear(Control Parent)
{
foreach (Control Child in Parent.Controls)
{
if (Child.HasControls())
Clear(Child);
else
{
if (Child.GetType() == typeof(TextBox))
((TextBox)Child).Text = "";
}
}
}
protected void Button1_Click(object sender, EventArgs e)

{

Clear(this.Page);
}
}