Question

What's the difference between a datatable and a datareader?

Answer 1

DataTables is a plug-in for the jQuery Javascript library. It is a highly flexible tool, build upon the foundations of progressive enhancement, that adds all of these advanced features to any HTML table.
In ADO.NET, a DataReader is a broad category of objects used to sequentially read data from adata source. DataReaders provide a very efficient way to accessdata, and can be thought of as a Firehose cursor from ASP Classic, except that no server-side cursor is used.