How to fetch Last Record in Subsonic

Jamsi — Tue, 22 Dec 2009 06:18:22 +0000

Is it just me or is Subsonic the topic of discussion right now?
I had a need to retrieve the last ID that had been generated in a table; that being, the last “auto increment” ID of a table.

The following example worked a charm using Subsonic and activerecord.

var fetch_ref_id = contract.All().OrderByDescending(c => c.id).Take(1).ToList();
if (iRef_new_id != null)
{
     iRef_new_id = fetch_ref_id[0].id;
}

As you can see, it creates a new list (noted by the ToList()) by connecting to the table “category”, it then selects all results (All()) and then orders the list by Descending and finally, the take(1) simply takes the top record.

I then whack the result (if you have a column called id) into a integer.

Subsonic ordering – OrderByDescending

Subsonic ordering – OrderByDescending

Jamsi — Tue, 22 Dec 2009 05:41:22 +0000

So the subsonic documentation sucks. If you’re new to activerecord, linq and subsonic in general; you’ll find it fairly hard to construct basic queries. However once you’ve got it under control, it’s a piece of cake.

To sort your table using activerecord, use the following examples;

To sort ascending by a column called name

var categories = category.All().OrderBy(c => c.name);

To sort descendingby a column called name

var categories = category.All().OrderByDescending(c => c.name);

You can then just bind to your gridview/dropdown list or whatever you like.

            if (categories != null)
            {
                drp.DataSource = categories ;
                drp.DataBind();
            }