JSON有关问题VB.NET

JSON问题求助VB.NET
字符串如下： 
{"farmlandStatus":[{"a":15,"b":6,"c":0,"d":0,"e":1,"f":0,"g":0,"h":1,"i":100,"j":1,"k":26,"l":15,"m":15,"n":{"227554197":1,"276748590":1,"239255726":1,"238907507":1,"241702041":1,"250742092":1,"268702762":1,"237278654":1,"230021050":1,"260507944":1,"264453468":1},"o":0,"p":[],"q":1249911384,"r":1250141784,"s":0,"t":0,"u":0},{"a":15,"b":6,"c":0,"d":0,"e":1,"f":0,"g":0,"h":1,"i":100,"j":1,"k":28,"l":16,"m":16,"n":{"227554197":1,"276748590":1,"239255726":1,"238907507":1,"241702041":1,"250742092":1,"268702762":1,"237278654":1,"230021050":1,"260507944":1},"o":0,"p":[],"q":1249911384,"r":1250141784,"s":0,"t":0,"u":0}],"items":{"1":{"itemId":1},"2":{"itemId":2},"4":{"itemId":"4"},"3":{"itemId":"3"}},"exp":19661} 

farmlandStatus下有个数组，只拿第一个说吧。 
里面有个n值，也是数组： 
"n":{"227554197":1,"276748590":1,"239255726":1,"238907507":1,"241702041":1,"250742092":1,"268702762":1,"237278654":1,"230021050":1,"260507944":1,"264453468":1} 

此时，我不想得到Value值，只想得到Aname的值，比如227554197，因为这些值是不固定的。 
VB.NET该如何写操作

------解决方案--------------------
你可以试试这个
http://james.newtonking.com/projects/json-net.aspx
http://james.newtonking.com/projects/json/help/

如果你的格式不固定，可以考虑采用xml格式进行数据的交换。

------解决方案--------------------
http://topic.csdn.net/u/20090721/20/54e0b8b5-70c7-4276-9696-411641115242.html
参考我在这个帖子的回复