C#使用SqlBulkCopy批量复制数据到数据表

using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoMatchingColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Open the destination connection. In the real world you would
            // not use SqlBulkCopy to move data from one table to the other
            // in the same database. This is for demonstration purposes only.
            using (SqlConnection destinationConnection =
                       new SqlConnection(connectionString))
            {
                destinationConnection.Open();

                // Set up the bulk copy object.
                // Note that the column positions in the source
                // data reader match the column positions in
                // the destination table so there is no need to
                // map columns.
                using (SqlBulkCopy bulkCopy =
                           new SqlBulkCopy(destinationConnection))
                {
                    bulkCopy.DestinationTableName =
                        "dbo.BulkCopyDemoMatchingColumns";

                    try
                    {
                        // Write from the source to the destination.
                        bulkCopy.WriteToServer(reader);
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex.Message);
                    }
                    finally
                    {
                        // Close the SqlDataReader. The SqlBulkCopy
                        // object is automatically closed at the end
                        // of the using block.
                        reader.Close();
                    }
                }

                // Perform a final count on the destination
                // table to see how many rows were added.
                long countEnd = System.Convert.ToInt32(
                    commandRowCount.ExecuteScalar());
                Console.WriteLine("Ending row count = {0}", countEnd);
                Console.WriteLine("{0} rows were added.", countEnd - countStart);
                Console.WriteLine("Press Enter to finish.");
                Console.ReadLine();
            }
        }
    }

    private static string GetConnectionString()
        // To avoid storing the sourceConnection string in your code,
        // you can retrieve it from a configuration file.
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

var dt = bisdal.From<TopBrand>(TopBrand._.ID == -1, OrderByClip.Default).ToDataTable();

foreach (var item in brandselldataitems)
{
 try
 {

     TopBrand topbrand = new TopBrand
     {
  BrandIndex = item.mk,
  BrandName = item.c58,
  Date = date,
  WinnerAmt = item.c60,
  WinnerPeople = item.c62,
  WinnerProNum = item.c61,
  HotTaobaoCategoryID = cid
     };
     CreateDtByItem<TopBrand>(topbrand, dt);
 }
 catch (Exception ex)
 {
     Logger.Error(ex.ToString());
     continue;
 }
}

private void CreateDtByItem<T>(T item, DataTable dt)
{
    System.Reflection.PropertyInfo[] properties = item.GetType().GetProperties(System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public);
    var newrow = dt.NewRow();
    foreach (System.Reflection.PropertyInfo pitem in properties)
    {

 string name = pitem.Name;
 if (name == "children")
 {
     continue;
 }
 object value = pitem.GetValue(item, null);
 newrow[name] = value == null ? DBNull.Value : value;
    }
    dt.Rows.Add(newrow);
}

BulkWriteToServer(con, "TopBrand", dt);

private void BulkWriteToServer(SqlConnection con, string destinationtablename, DataTable sourcedt)
{
    try
    {
 if (con.State == ConnectionState.Closed)
 {
     con.Open();
 }
 SqlBulkCopy topbranddtcopy = new SqlBulkCopy(con);
 topbranddtcopy.DestinationTableName = destinationtablename;
 topbranddtcopy.WriteToServer(sourcedt);
 con.Close();
    }
    catch (Exception ex)
    {
 Logger.Error("批量新增数据:" + destinationtablename + "," + ex.ToString());
    }
}

private void CreateTopBrandData(int date, int cid, List<BrandSellDataItem> brandselldataitems)
{
    try
    {
 var dt = bisdal.From<TopBrand>(TopBrand._.ID == -1, OrderByClip.Default).ToDataTable();
 foreach (var item in brandselldataitems)
 {
     try
     {

  TopBrand topbrand = new TopBrand
  {
      BrandIndex = item.mk,
      BrandName = item.c58,
      Date = date,
      WinnerAmt = item.c60,
      WinnerPeople = item.c62,
      WinnerProNum = item.c61,
      HotTaobaoCategoryID = cid
  };
  CreateDtByItem<TopBrand>(topbrand, dt);
     }
     catch (Exception ex)
     {
  Logger.Error(ex.ToString());
  continue;
     }
 }
 BulkWriteToServer(con, "TopBrand", dt);
    }
    catch (Exception ex)
    {
 throw new Exception("CreateTopBrandData:" + ex.ToString());
    }
}