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

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