SQL Server 批量插入数据库 以及 List<T>与Model相互转换配合使用

　　批量插入数据库

     /// <summary>
        /// 批量插入数据库
        /// </summary>
        /// <param name="TableName">目标表</param>
        /// <param name="dt">源数据</param>
        public bool SqlBulkCopyByDatatable(string TableName, DataTable dt)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                using (SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction))
                {
                    try
                    {
                        sqlbulkcopy.DestinationTableName = TableName;
                        for (int i = 0; i < dt.Columns.Count; i++)
                        {
                            sqlbulkcopy.ColumnMappings.Add(dt.Columns[i].ColumnName, dt.Columns[i].ColumnName);
                        }
                        sqlbulkcopy.WriteToServer(dt);
                        return true;
                    }
                    catch (System.Exception ex)
                    {
                        //ex.Message;
                        return false;
                    }
                }
            }
        }

List<T> 、 model 相互转换

     /// <summary>
        /// 批量插入数据库
        /// </summary>
        /// <param name="TableName">目标表</param>
        /// <param name="dt">源数据</param>
        public bool SqlBulkCopyByDatatable(string TableName, DataTable dt)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                using (SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction))
                {
                    try
                    {
                        sqlbulkcopy.DestinationTableName = TableName;
                        for (int i = 0; i < dt.Columns.Count; i++)
                        {
                            sqlbulkcopy.ColumnMappings.Add(dt.Columns[i].ColumnName, dt.Columns[i].ColumnName);
                        }
                        sqlbulkcopy.WriteToServer(dt);
                        return true;
                    }
                    catch (System.Exception ex)
                    {
                        //ex.Message;
                        return false;
                    }
                }
            }
        }