ASP.NET, HTML, JavaScript Snippet Support (VS 2010 and .NET 4.0 Series)

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ASP.NET, HTML, JavaScript Snippet Support (VS 2010 and .NET 4.0 Series)

This is the sixth in a series of blog posts I’m doing on the upcoming VS 2010 and .NET 4 release.

Today’s post covers another useful improvement in VS 2010 – HTML/ASP.NET/JavaScript snippet support. Snippets allow you to be more productive within source view by allowing you to create chunks of code and markup that you can quickly apply and use in your application with a minimum of character typing.

Visual Studio has supported the concept of “snippets” for VB and C# in previous releases – but not for HTML, ASP.NET markup and JavaScript. With VS 2010 we now support snippets for these content types as well.

Using ASP.NET Snippets

Let’s walkthrough how we can use snippets to quickly implement a common security scenario. Specifically, we’ll implement the functionality necessary to display either a “[ Login ]” link or a “[ Welcome UserName ]” message at the the top right of a site depending on whether or not the user is logged in:


The above functionality is automatically added for you when you create a project using the new ASP.NET Project Starter Template in VS 2010. For the purpose of this walkthrough, though, we’ll assume we are starting with a blank master page and will build it entirely from scratch.

We’ll start by adding a standard

element to a master page, and then position our cursor within it:


We are going to use the built-in control to help implement our scenario. The control is a templated control (first introduced with ASP.NET 2.0) that allows us to easily switch between “Anonymous” and “LoggedIn” templates that automatically display depending on whether the user is authenticated. Rather than type the markup manually, we’ll instead use the new snippet support in VS 2010.

Typing in “


We’ll select the built-in “loginview” code snippet from the above list and hit the “tab” key to complete it:

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Happy Reading

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