.netTiers Team Blog - All Comments

re: TList (Tips and Tricks)

ParisianBull — Mon, 10 Sep 2007 16:22:14 GMT

Also, as I see several people doing this, the ForEach method is plainly a bad idea. It provides no extra functionality compared to the foreach STATEMENT, but it DOES add a lot of overhead as now the delegate must be invoked once per item in the list.

I fail to see how the use of the delegate improves on the straightforward implementation:

int total = 0;

foreach (OrderDetails d in order.OrderDetailCollection)

total += d.Price * d.Quantity;

re: TList (Tips and Tricks)

ParisianBull — Mon, 10 Sep 2007 16:18:39 GMT

First and foremost: Thanks for good tips!

However, I must take issue with one thing. The impression is created that the flexibility offered by Find() and other methods taking delegates could not have been provided in .NET 1.x, but that is plainly not the case. The exact same functionality could be provided by defining an interface with one method in place of the delegate. The main difference is coding convenience, since anonymous methods can be written inline, and since using an interface means one would have to decorate the implementing class appropriately.

On a side not, I believe it is less efficient to invoke a delegate than calling a method on an interface, although the difference may not matter in many cases. (Reflection is certainly much more expensive anyway.)

Phil Bernie Consulting » Using Predicate Generic Delegates in VB.Net with .NetTiers

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TList Net Tiers Tips at Densen

TList Net Tiers Tips at Densen — Wed, 03 Jan 2007 21:54:40 GMT

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Creating a Strongly Typed Repeater with CodeSmith

Daily News Faq List — Wed, 22 Nov 2006 16:08:48 GMT

New article on Creating a Strongly Typed Repeater with CodeSmith from the .netTiers Team Blog.

re: Creating strongly typed repeater

mcquiggd — Sun, 08 Oct 2006 17:37:18 GMT

Funnily enough I wrote something similar, to display content on a website that had lots of different formats (whitelabelling type of approach), that were specificed from a database. Basically I inherited from the Repeater control, and allowed programmatic or declarative setting of certain properties, including which specialised version of ITemplate to use in a given situation.

Depsite reflection, the performance is still adequate.

Community Server Daily News for Thursday, October 5, 2006

Community Server Daily News — Thu, 05 Oct 2006 20:03:09 GMT

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re: TList<Entity> (Tips and Tricks)

The Prisoner — Tue, 13 Jun 2006 18:57:32 GMT

removefilter doesn't seem to work

re: TList<Entity> (Tips and Tricks)

catsclaw — Mon, 13 Mar 2006 19:13:53 GMT

I agree these tips are great!

I'd love to see some VB.NET versons of some of this code too. I got a response on one of the forums for the ForEach in vb.net

product.ForEach(New Action(Of ContentQuality)(AddressOf product.ForEachSomething))

Sub ForEachSomething(ByVal p as Product)
'some code
End Sub

re: TList<Entity> (Tips and Tricks)

BioMash — Mon, 13 Mar 2006 06:25:13 GMT

Great! Very helpful

Thanks.

John.

re: TList<Entity> (Tips and Tricks)

jamest — Sun, 12 Mar 2006 14:19:12 GMT

Good tips!

Unfortunately I am trying to apply filtering without success. Could you pelase provide me a VB.NET sample code how I can apply filtering as my application is written in VB.NET.

product.ApplyFilter(delegate(Product p) {return p.ProductName == "Sugar" && p.CategoryId ==5;}));

Thanks!
James T.