using System.Data;
using System.Data.SqlClient;

namespace WX.CRM.DAL.Util
{
    public class SqlBulk_DAL
    {
        /// <summary>
        /// 批量插入数据
        /// </summary>
        /// <param name="TableName"></param>
        /// <param name="dt"></param>
        public void SqlBulkCopyByDatatableToEntity(string TableName, DataTable dt)
        {
            SqlBulkCopyByDatatable(SqlHelper.GetConnecionString(SqlHelper.DatabaseType.PromotionEntity), TableName, dt);
        }
        /// <summary>
        /// 批量插入数据
        /// </summary>
        /// <param name="connectionString">目标连接字符</param>
        /// <param name="TableName">目标表</param>
        /// <param name="dt">源数据</param>
        private void SqlBulkCopyByDatatable(string connectionString, 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);
                    }
                    catch (System.Exception ex)
                    {
                        throw ex;
                    }
                }
            }
        }
    }
}