Adding build number to static file paths for cache busting in ASP.NET MVC

sample-view.md

Usage

<script type="text/javascript" src="@Url.ContentVersioned("/Scripts/libs/backbone-min.js")"></script>

UrlHelperExtensions.cs

public static class UrlHelperExtensions
{
	private static int _revisionNumber;

	public static string ContentVersioned(this UrlHelper urlHelper, string contentPath)
	{
		string url = urlHelper.Content(contentPath);
		int revisionNumber = GetRevisionNumber();

		return String.Format("{0}?v={1}", url, revisionNumber);
	}

	public static int GetRevisionNumber()
	{
		if (_revisionNumber == 0)
		{
			Version v = Assembly.GetExecutingAssembly().GetName().Version;

			_revisionNumber = v.Revision;
		}

		return _revisionNumber;
	}
}