I have the data source defined using Read for my Kendo MVC grid. Every time that the data is refreshed, I want to include some data from the browser. I don't care if I have to use params or query string or whatever, but I need to be able to specify values to include in the ajax call to the server and those values will change as the user interacts with the page. How do I get those values included in the ajax call? There must be a standard way to do this, since it is hard to imagine a grid without fields on the screen controlling the grid data, but I cannot find any examples of this in the demos.