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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.

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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();
            }

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SubSonic 3.0 ActiveRecord Tutorial

Jamsi — Wed, 25 Nov 2009 07:42:58 +0000

I wanted to demonstrate the complete and utter power of SubSonic Activerecord’s toolset. Pretty much, its an easy to use querying engine which automatically creates objects that you can use within your ASP.NET project. You can use LINQ querying if you like, or you can use the SubSonic preferred way as demonstrated below;

Want to bind a gridview?

var categories = category.All();
gvList.DataSource = categories;
gvList.DataBind();

Boom. Done.

int iLineID = 1;
category delCat = category.SingleOrDefault(x => x.id == iLineID);
delCat.Delete();

Too easy right?
What about adding a new record?
category newCat = new category();
newCat.name = "Dummy category name";
newCat.Add();

How easy is that? Go grab SubSonic now!


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