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Let’s forget about state management, maintenance perspective, etc … and focus on render performance only
Which of render method has better performance ? <%= … %> or Server Control (or Html Server Control/ Custom Control/ UserControl) ?
e.g 1: Page1
vs
e.g 2: using <% %> with foreach to render a DataTable
vs
using DataGrid
In my opinion, <% %> will win not only in these 2 examples but also in most cases. As in ASP.NET MVC, we use inline code in Views to render HTML.
What’s your opinion ?
It’s a lot more difficult to manage <% %> code and it tends to be more brittle, IMO.
It might be faster, but you lose maintainability. I have found if it’s a data-heavy page, the price of the SQL Query is more expensive than the rendering speed of a GridView or a Repeater.
(That and turning off ViewState.)