Codepolice.net » Tag http://codepolice.net C#, ASP.NET, MVC, LINQ, Wordpress and stuff like that Mon, 26 Jul 2010 08:58:47 +0000 en hourly 1 http://wordpress.org/?v=3.0 Create a tag cloud with limited amout of tags in ASP.NET and LINQ http://codepolice.net/2008/10/14/create-a-tag-cloud-with-limited-amout-of-tags-in-aspnet-and-linq/ http://codepolice.net/2008/10/14/create-a-tag-cloud-with-limited-amout-of-tags-in-aspnet-and-linq/#comments Tue, 14 Oct 2008 15:13:12 +0000 Ola http://www.codepolice.net/?p=24 Today i built a Tag cloud for my new site. I found this great article about on how to do it with LINQ and C#. But i missed some features. Especially how to limit the number of tags that was shown. So if you read that article and then have a look at this code if you have the same problem as me.

var tagSummary = (from ti in db.TagItemRelations
    group ti by ti.Tag.Text into tagGroup
    select new {
    Tag = tagGroup.Key,
    TagFrequency = tagGroup.Count()
}).OrderByDescending(x=>x.TagFrequency).Take(20);

int maxTagFrequency = (from t in tagSummary select t.TagFrequency).Max();

var tagCloud = (from ti in tagSummary
    select new TagCloudItem {
    Tag = ti.Tag,
    Weight = (double)ti.TagFrequency / maxTagFrequency * 100
}).OrderBy(x=>x.Tag);

The main difference between my code and the code in the article is that i have slightly more complex data model (should not matter) and that i make the second query against the “result” from the first query. This allow me to first order by popularity and then in alphabetic order.

Please leave a comment if there is any better way to do this or if you have any questions.

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