Sending large amounts of data over webservice using C#

I've dealt somewhat with开发者_开发知识库 web services, but I have a client who would like to get a report from our system and display it on their site. What would be the best way to send the information over to them using a web service?

I have two ideas, either do one data transfer that's large, or handle pagination through the web services (though this wouldn't allow filtering.) I'm open to others.

Thanks

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What kind of data is it? Maybe you can provide an OData feed? The OData API allows for url-driven filtering, paging, etc.

More info about WCF Data Services here