Microsoft LINQ

-
Ok so I'm working on a fairly large ASP.NET project for the federalies (I really can't say which agency). Right now we're pumping data to the app using datasets and saving with direct SP calls. This was fine when the app was in it's infancy. But we're rapidly hitting large scale volumes of users and this approach is limiting us in scope and scalability. Most people suggest going a pure OOD route and turning result sets from your DB into .net classes. This has to be done via an O/R (object relation) mapper that can take a number of tables, rows, columns into the correct collection of classes. I looked into some 3rd party solutions and most people suggest NHibernate. However NHibernate doesn't work with 100% stored procs for data access. And guess what we use nothing but stored procs to get data to/from the DB. So that option goes down the chute. Low and behold I find some references to LINQ from MS. I do some reading and found it's pretty bad ass. I can specify the database, stored procs, and bam I can get a collection of classes directly instead of a bloated dataset. I didn't have to roll my own OR mapper and its from MS and is included in the VS 2008 release. Word to the mother...

Read more on how to use it here:

on the ASP.NET weblogs

Comments

Post a Comment

Popular posts from this blog

String.Replace vs Regex.Replace

-
Image
I recently ran into a situation where I had to do some string manipulation. I had to replace some bad text with valid text. All this had to do with creating valid xml element names. So we had to string white space and some other invalid characters and replace them with valid xml element formatting. To do this we ended up using the Regex.Replace static method. Simply because there was some complexity involved that would have entailed using more then 1 String.Replace call when we can do it all with one regular expression. This caused some discussion about how heavy the regex class is and when to use it. I decided to do some testing and these are my results. First the code static void Main( string[] args ) { // this is our test value string testValue = "This is a test string"; int count; // run the regex replace DateTime regexStart = DateTime.Now; for( count = 0; count < 10000000; count++ ) { string newValue = Regex.Replace( testValue, ...
Read more

C# Producer Consumer using Rabbit MQ

-
So I've been learning about the different message queuing systems and discovered rabbit MQ, an open source and very popular message queuing system. I've created a very basic producer/consumer system that sends a message to a rabbit MQ queue. Producer/Consumer is pretty simple, you have two systems a producer that writes to a queue and a consumer that reads from a queue. This is desirable because it splits responsibility and allows for scalability. The code below is going to assume you have a rabbit MQ instance installed on your local machine. You can get rabbit MQ here:  https://www.rabbitmq.com/ Now the code is broken down into 3 parts, the main program, the producer, and the consumer. This is a basic example so its using old school threading rather than the new async/await .net prefers. But this is just to show how to use rabbit MQ in C# and to demonstrate a producer/consumer example. You will need to make sure your project has the rabbit MQ client nuget package installed...
Read more

C# Form Application in Kiosk Mode/Fullscreen

-
Sometimes you need to have a C# windows form application run in full screen mode.  Like you see on a kiosk at a mall or some stand alone machine.  It's fairly easy you just need to set some of the properties on the Form either in it's OnLoad method or directly in the designer. In the OnLoad method of the main Form set these values, or again set them directly in the designer. this.MaximizeBox = false; this.TopMost = true; this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None; this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
Read more