[ADO.NET]写入数据

关键字：.NET,SQL SERVER,SQLBULKCOPY

插入一条数据的操作（SqlCmd）。

public void InsertOneIntoSourceDB()
{
    if (DBConnection(GetConnectionString()))
    {
        string sqlinsert = null;
        SqlTransaction tran = con.BeginTransaction();
        SqlCommand cmd = con.CreateCommand();
        cmd.Transaction = tran;
        try
        {
            sqlinsert = "insert into MeterMeasureHistories values(@meterMeasureID,@value,@quality,@timestamp)";
            cmd.CommandText = sqlinsert;
            SqlParameter[] parameters = new SqlParameter[]
                {
                    new SqlParameter("@meterMeasureID",SqlDbType.Int){Value = },
                    new SqlParameter("@value",SqlDbType.Float){Value = },
                    new SqlParameter("@quality",SqlDbType.NVarChar){Value = "good"},
                    new SqlParameter("@timestamp",SqlDbType.DateTime){Value = DateTime.Now}
                };
            cmd.Parameters.AddRange(parameters);
            cmd.ExecuteNonQuery();
            tran.Commit();
        }
        catch (Exception e)
        {
            throw e;
        }
        DBShutdown();
    }
}

插入多条数据，利用了SqlBulkCopy、DataTable、DataRow，效率比循环高（SqlDataAdapter）。

public void InsertIntoSourceDB()
{
    if (DBConnection(GetConnectionString()))
    {
        try
        {
            DataTable dt = new DataTable();
            dt.Columns.AddRange(new DataColumn[]
            {
                new DataColumn("MeterMeasureHistoryID"),
                new DataColumn("MeterMeasureID"),
                new DataColumn("Value"),
                new DataColumn("Quality"),
                new DataColumn("Timestamp")
            });
            foreach (var item in meterMeasureHistories)
            {
                DataRow dr = dt.NewRow();
                dr[] = item.MeterMeasureID;
                dr[] = item.Value;
                dr[] = item.Quality;
                dr[] = item.Timestamp;
                dt.Rows.Add(dr);
            }
            SqlBulkCopy bulkcopy = new SqlBulkCopy(con);
            bulkcopy.DestinationTableName = "dbo.MeterMeasureHistories";
            bulkcopy.WriteToServer(dt);
        }
        catch (Exception e)
        {
            throw e;
        }
        DBShutdown();
    }
}