Linq to dataset examples

DataSet ds = new DataSet();
ds.Locale = CultureInfo.InvariantCulture;
FillDataSet(ds);

DataTable products = ds.Tables["Product"];

IEnumerable<DataRow> query =
    from product in products.AsEnumerable()
    select product;

Console.WriteLine("Product Names:");
foreach (DataRow p in query)
{
    Console.WriteLine(p.Field<string>("Name"));
}

You'll need to add a reference to

System.Data.DataSetExtensions

Then your DataTable will have an extension method AsEnumerable(). You can use this to then run LINQ queries on the rows. There's an example that shows how to use linq with datasets using C#.