Finds a Control recursively in Asp.net

On one of my project i need to Find the controls till get the result control so i have built the code like this...

Below is Method Definition :

/// <summary>
/// Finds a Control recursively. Note finds the first match and exists
/// </summary>
/// <param name="ContainerCtl"></param>
/// <param name="IdToFind"></param>
/// <returns></returns>
public static Control FindControlRecursive(Control Root, string Id)
{
    string str =string.Empty;
    if (Root.ID == Id)
      return Root;
    foreach (Control Ctl in Root.Controls)
      {
        Control FoundCtl = FindControlRecursive(Ctl, Id);
        if (FoundCtl != null)
         {
           switch (Id)
            {
               case "hdnProductId":
                  staticProductId = ((System.Web.UI.HtmlControls.HtmlInputHidden)FoundCtl).Value;
                  break;
               case "hdnProductName":
                   staticProductName = ((System.Web.UI.HtmlControls.HtmlInputHidden)FoundCtl).Value;
                    break;
             }
             break;               
         }
     }
     return null;
} 

Below is Method Definition in GIF Format :

Below is how to call that method:-

            FindControlRecursive(this.Page.Master, "hdnProductId");
            FindControlRecursive(this.Page.Master, "hdnProductName");

Below is how to call that method in Gif Format:-