Something wrong in the msdn

  Today I fiound something wrong in the msdn. When I was learning WPF documents, I found the follows.
  The xaml code was mixed with c# code.
  The link of this page is ms-help://MS.MSSDK.1033/MS.NETFX30SDK.1033/wpf_conceptual/html/32b1c054-5aca-423b-b4b5-ed8dc4dc637d.htm