Yesterday, Fred asked me if I could help him to convert C# code to LINQ. The solution may not obvious to find unless you know LINQ well. I will reproduce here the solution I gave Fred. Whether the LINQ version of the code is easier to read than the original one is arguable. The purpose here is more to...

In this blog entry, I list the essential tips and tricks that every developer who uses Visual Studio 2008 should know. I wanted to keep this list brief. I also wanted to focus on only those tips and tricks that I use on a daily basis. Almost all of these tips and tricks are just as useful regardless...

Ce matin, j'ai décidé d'installer la nouvelle version de mon antivirus mais plus aucun moyen d'afficher les pages de mes projets Visual Studio 2005 , que ce soit en mode Debug ou non, avec pour simple indication l'écran ci-dessous, " Internet Explorer ne peut pas afficher cette page...

In this tip, I explore one approach to building Ajax applications with ASP.NET MVC. I show how you can use view data when building Ajax applications with ASP.NET MVC in the same way as you would use view data when building server-side application. I demonstrate how to create a custom HTML Helper that...

I have mentioned previously some useful tools for web development for IE, and now here are a couple more. DOM Helper This allows you to edit the css of a page much like EditCSS for Firefox Fiddler From the site "Fiddler is a HTTP Debugging Proxy which logs all HTTP traffic between your computer...

How often have you seen code like this? 1: string myAppSetting = ConfigurationManager.AppSetting[ "key" ]; 2: if (myAppSetting== null ) 3: myAppSetting = "MyDefaultSetting" .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier...

In this tip, I demonstrate how you can create a custom HTML Helper that you can use to generate a user interface for paging through a set of database records. I build on the work of Troy Goode and Martijn Boland. I also demonstrate how you can build unit tests for HTML Helpers by faking the HtmlHelper...

In this tip, I demonstrate how to take advantage of the validators from the System.ComponentModel.DataAnnotations namespace in an MVC application. You can take advantage of these validators to validate form data before submitting the form data into a database. In my previous tip, I explained how you...

In this tip, I demonstrate how you can use the Microsoft Enterprise Validation Application Block within an MVC application to perform both basic and advanced form validation. The Validation Application Block supports a rich set of validators that you can begin using in an ASP.NET MVC application. In...

In this tip, I demonstrate three methods of creating cascading drop down lists in an MVC application. First, I demonstrate how to write JavaScript code to update one dropdown list when another dropdown list changes. Next, I show you how you can retrieve the data for the dropdown lists from either a controller...