How to send a Query String to a Click Once Application

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This shows me how to get the information:

http://msdn.microsoft.com/en-us/library/ms172242(VS.80).aspx

but how do I send such a request?

I have tried a WebRequest without any success. There does not seem to be an
appropriate Method for this. Is this a POST or a GET or something else?

I would like to send this string from a C# application or even better yet a
..bat file.

Thanks for taking a look at this.

Tom