manuel dataSet creation

gistfile1.cs

ds = new DataSet("VehiclesRepairs");

            var vehicles = ds.Tables.Add("Vehicles");
            vehicles.Columns.Add("VIN",typeof(string));
            vehicles.Columns.Add("Make", typeof(string));
            vehicles.Columns.Add("Model", typeof(string));
            vehicles.Columns.Add("Year", typeof(string));
            vehicles.PrimaryKey = new DataColumn[] { vehicles.Columns["VIN"] };

            var repairs = ds.Tables.Add("Repairs");
            var pk = repairs.Columns.Add("ID",typeof(int));
            pk.AutoIncrement = true;
            pk.AutoIncrementSeed = -1;
            pk.AutoIncrementStep = -1;
            repairs.Columns.Add("VIN",typeof(string));
            repairs.Columns.Add("Description",typeof(string));
            repairs.Columns.Add("Cost",typeof(decimal));
            repairs.PrimaryKey = new DataColumn[] { repairs.Columns["ID"] };

            ds.Relations.Add(
                "vehicles_repairs",
                vehicles.Columns["VIN"],
                repairs.Columns["VIN"]);