var query = new Select().Top("1").From(TreeHtmlExports.Schema)
			.Where(TreeHtmlExports.Columns.TreeId).IsEqualTo(treeId)
			.OrderDesc(TreeHtmlExports.Columns.DateCreated);
 
Dal.TreeHtmlExportsCollection treeHtmlExportsCollection = 
	query.ExecuteAsCollection<TreeHtmlExportsCollection>();