将DataTable导入到SQL数据库表中

 /// <summary>
        /// 将DataTable导入到SQL数据库表中
        /// </summary>
        /// <param name="dt">DataTable 数据源</param>
        /// <param name="connectString">SQL连接字符串</param>
        public static void DataTableToSQLServer(DataTable dt, string connectString)
        {

            using (SqlConnection conn = new SqlConnection(connectString))
            {
                conn.Open();
                //批量数据处理SQL表
                SqlBulkCopy bulkCopy = new SqlBulkCopy(conn);
                try
                {
                    bulkCopy.DestinationTableName = "test_table";//要插入的SQL表的表名
                    bulkCopy.BatchSize = dt.Rows.Count;
                    #region Datatable 表列 对应 SQL表的列
                    bulkCopy.ColumnMappings.Add(0, 0);//映射字段名 DataTable列 ,数据库 对应的列  
                    bulkCopy.ColumnMappings.Add(1, 1);
                    bulkCopy.ColumnMappings.Add(2, 2);
                    bulkCopy.ColumnMappings.Add(3, 3);
                    bulkCopy.ColumnMappings.Add(4, 4);
                    #endregion
                    bulkCopy.WriteToServer(dt);     //复制到SQL指定表
                    MessageBox.Show("插入成功");
                }
                catch (Exception ex)
                {
                    MessageBox.Show("异常："+ex);
                }
            }
        }