So your actual question is...
"How do I display character information in a winform application"
To do that you first have to have communication between your application and the client. This can be done either through memory based hooks (hook into the actual values in memory or hook the send/receive and read the information from packets) or use a man in the middle proxy to intercept the data being transmitted between the client and server.
To do either you'll need a fairly decent knowledge of programming. The new encryption is not public so using the proxy method is not very simple anymore. If you want to use a hook based approach, hawtness posted a lovely framework but you'll have to be comfortable enough with assembly and reverse engineering to figure out the memory addresses you'll need to use for your purposes.
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There's a ton of information on how proxies work in that thread.
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Old proxy framework and tutorials I wrote
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Memory based hooking library