C#写xml文件并保存

Question

- <album name="album1">
- <Preview path="album1" extension="xpi" sizew="680" sizeh="474" totalpage="25">
- <Page id="0" text="封面" bgimg="fm.xpi" sizew="680" sizeh="474" totalphoto="2">
<Photo id="0" x="0" y="0" minw="5029" minh="3504" pwidth="680" pheight="474" img="hard_cover_color.xpi" /> 
<Photo id="1" x="138" y="117" minw="3155" minh="1925" pwidth="406" pheight="243" img="sampleS.xpi" /> 
</Page>
</Preview>
</album>

那位能帮忙用C#的两个类xmlDocument 和 xmlNode帮我写一下上面上面这个XML文挡.保存在(album文件夹中)