Question

I usually after css modification, change the version of css file in master.
then i must upload css file and master file.
is there any solution to change css version without need to upload master.

<link rel="stylesheet" href="<%=ResolveUrl("~/themes/default/style.css?v2") %>" type="text/css"/>

i am using asp.net.

Answer 1

Seeing how you do not want to change anything but the CSS file itself you could write a custom method which wraps ResolveURL and appends the last modified date of the css file in a set format (i.e. MMddyyhhmmss). This would automatically update whenever the file gets changed.

Something along the lines of:

    <link href="<%= VersionCssUrl("~/Styles/Site.css") %>" rel="stylesheet" type="text/css" />

C#:

    public string VersionCssUrl(string url)
    {
        // Get physical path.
        var path = HttpContext.Current.Server.MapPath(url);

        return String.Format("{0}?{1}", 
            ResolveUrl(url), 
            File.GetLastWriteTime(path).ToString("MMddyyhhmmss"));
    }

Alternatively, it might be worth looking into any of these:

• Shinkansen
• ClientDependency
• Cassette, as mentioned by TJB
• .NET built-in bundling