使用SqlBulkCopy批量插入数据

static void Main(string[] args)
        {
            //定义与目标表结构相同的DataTable
            DataTable dataTable = new DataTable();
            dataTable.Columns.Add(new DataColumn() { ColumnName = "EmployeeId", DataType = System.Type.GetType("System.String") });
            dataTable.Columns.Add(new DataColumn() { ColumnName = "LastName", DataType = System.Type.GetType("System.String") });
            dataTable.Columns.Add(new DataColumn() { ColumnName = "FirstName", DataType = System.Type.GetType("System.String") });
            //...此处省略很多行

            //插入数据行, 请注意不同类型的赋值, 这里应该根据实际情况添加很多行
            DataRow dataRow = dataTable.NewRow();
            dataRow["EmployeeId"] = "000001";
            dataRow["LastName"] = "Nick";
            dataRow["FirstName"] = "Yang";
            //此处省略插入很多行
            dataTable.Rows.Add(dataRow);

            string connStr = "Data Source=.;Database=ABC;user id=sa;password=***;Persist Security Info=True";
            SqlConnection conn = new SqlConnection(connStr);
            conn.Open();
            SqlTransaction sqlbulkTransaction = conn.BeginTransaction();
            SqlBulkCopy copy = new SqlBulkCopy(conn, SqlBulkCopyOptions.CheckConstraints, sqlbulkTransaction);
            copy.DestinationTableName = "dbo.目标表表名";

            //这里假设上面定义的DataTable与目标表结构相同
            foreach (DataColumn dc in dataTable.Columns)
            {
                copy.ColumnMappings.Add(dc.ColumnName, dc.ColumnName);
            }

            try
            {
                copy.WriteToServer(dataTable);
                sqlbulkTransaction.Commit();
            }
            catch (Exception ex)
            {
                sqlbulkTransaction.Rollback();
                Console.WriteLine(ex.ToString());
            }
            finally
            {
                copy.Close();
                conn.Close();
            }
        }