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Category Archives: NHibernate

Empty NHibernate logs and poor performance

We had an issue recently where NHibernate was performing very poorly on our production server, but not on our developer machines or our test server. I investigated the issue and narrowed it down to two symptoms.
Symptom 1:
Very poor performance. I’m talking 10+ seconds per page load, with no more than 5 queries being executed by [...]

Posted 12 September 2008 by James Gregory | .Net § Work | Comments (4) | Tagged: , ,

Introducing Fluent NHibernate

A couple of people have already covered this already, specifically Bobby Johnson, Matt Hinze, and Zachariah Young. I figure I should say something on it anyway.
I’ve adopted a project from Jeremy Miller that I think has the potential to be a really useful tool. It’s called Fluent NHibernate, and it’s primarily a fluent API for [...]

Posted 08 August 2008 by James Gregory | .Net § Code § Hobby Projects | Comments (28) | Tagged: , , ,

Introducing the filterable DeleGrid

The DeleGrid is a paged GridView control that handles data-binding through the use of events and delegates rather than with a traditional collection.
What this means is that you have full control over the data that is shown in the currently displayed page. Traditionally you’d retrieve the whole recordset then page it locally, but with the [...]

Posted 05 March 2008 by James Gregory | .Net § Code § Hobby Projects | Comments (2) |

ObjectField - A GridView field

The version of the ObjectField that this post refers to is now out of date. Please go to the ObjectField 1.1 post for the latest version.

I encountered a problem while binding a complex object to a GridView, in that the BoundField doesn’t support specifying a nested value in it’s DataField property. So if you have [...]

Posted 17 February 2008 by James Gregory | .Net § Code § Hobby Projects | Comments (4) |

NHibernate and the SqlTypeException

NHibernate is a wonderful piece of technology, I love it probably more than is reasonable for code. It does however, occasionally scare you with some seemingly odd behavior. I say seemingly, because every time I’ve had trouble it’s actually ended up being my own fault. This is one of those times.
Picture a simple page, with [...]

Posted 18 December 2007 by James Gregory | .Net | Comments (6) |