Table-values parameter(TVP)系列之二: 利用DataTable将其作为参数传给SP

private void btnDataTable_Click(object sender, EventArgs e)
      {
          //---OrderItem
          DataTable dtOrderItem = new DataTable();
          dtOrderItem.Columns.Add("OrderId", typeof(int));
          dtOrderItem.Columns.Add("CustomerId", typeof(int));
          dtOrderItem.Columns.Add("OrderAt", typeof(DateTime));
          //---OrderDetail
          DataTable dtOrderDetail = new DataTable();
          dtOrderDetail.Columns.Add("OrderId", typeof(int));
          dtOrderDetail.Columns.Add("LineNumber", typeof(int));
          dtOrderDetail.Columns.Add("ProductId", typeof(int));
          dtOrderDetail.Columns.Add("Quantity", typeof(int));
          dtOrderDetail.Columns.Add("Price", typeof(decimal));
          //---Add data
          dtOrderItem.Rows.Add(new object[] { 1001, 5001, DateTime.Now });
          dtOrderDetail.Rows.Add(new object[] { 1001, 1, 101, 15, 12.28 });
          dtOrderDetail.Rows.Add(new object[] { 1001, 2, 102, 20, 102.12 });
          dtOrderDetail.Rows.Add(new object[] { 1001, 3, 103, 23, 0.85 });
          dtOrderItem.Rows.Add(new object[] { 2001, 6001, DateTime.Now });
          dtOrderDetail.Rows.Add(new object[] { 2001, 1, 201, 5, 79.59 });
          dtOrderDetail.Rows.Add(new object[] { 2001, 2, 202, 200, 3.25 });
          //----
          using (SqlConnection conn = new SqlConnection("Data Source=;Initial Catalog=AdventureWorks;UserID=sa;Password="))
          {
              conn.Open();
              //---Passing a Table-Valued Parameter to a Stored Pcocedure
              using (SqlCommand cmd = new SqlCommand("dbo.OrderItem$Insert", conn))
              {
                  cmd.CommandType = CommandType.StoredProcedure;
                  //---注意：下边的两个参数名，要和SP的参数名一致。
                  SqlParameter tvpOrderItem = cmd.Parameters.AddWithValue("@OrderHeaders", dtOrderItem);
                  SqlParameter tvpOrderDetail = cmd.Parameters.AddWithValue("@OrderDetails", dtOrderDetail);
                  tvpOrderItem.SqlDbType = SqlDbType.Structured;
                  tvpOrderDetail.SqlDbType = SqlDbType.Structured;
                  cmd.ExecuteNonQuery();
              }
              //---Streadming rows with a dataReader
              string sql= @"select tvp1.OrderId, tvp1.CustomerId, tvp2.LineNumber, tvp2.ProductId
                          from    dbo.OrderItem as tvp1 INNER JOIN @tvpDetail as tvp2 ON tvp1.OrderId=tvp2.OrderId
                          order by tvp2.OrderId, tvp2.LineNumber;";
              SqlCommand readCommand = new SqlCommand(sql, conn);
              readCommand.CommandType = CommandType.Text;
              SqlParameter tvpDetail = readCommand.Parameters.AddWithValue("@tvpDetail", dtOrderDetail);
              tvpDetail.SqlDbType = SqlDbType.Structured;
              tvpDetail.TypeName = "dbo.OrderDetail$Udt";
              SqlDataReader reader = readCommand.ExecuteReader();
              while (reader.Read())
              {
                  Console.WriteLine(string.Format("OrderId={0}, CustomrId={1}, LineNumber={2}, ProductId={3}",
                                      reader.GetInt32(0), reader.GetInt32(1), reader.GetInt32(2), reader.GetInt32(3)));
              }
              reader.Close();
              //读出结果如下：
              //-----------------------
              //OrderId=1001, CustomrId=5001, LineNumber=1, ProductId=101
              //OrderId=1001, CustomrId=5001, LineNumber=2, ProductId=102
              //OrderId=1001, CustomrId=5001, LineNumber=3, ProductId=103
              //OrderId=2001, CustomrId=6001, LineNumber=1, ProductId=201
              //OrderId=2001, CustomrId=6001, LineNumber=2, ProductId=202
              //-----------------------
              conn.Close();
          }
      } 

三，参照文献 
  MSDN：Table-Valued Parameters in SQL Server 2008 (ADO.NET)
  URL: ms-help://MS.MSDNQTR.v90.en/wd_adonet/html/370c16d5-db7b-43e3-945b-ccaab35b739b.htm