C#:用SqlBulkCopy来实现批量插入数据

SqlBulkCopy是.net2.0的新特性,平时用的很少,但是其功能却是非常强大,对于批量插入数据性能非常优越

 

代码
    
    
/// <summary>
/// bulk插入
/// </summary>
private void BulkInsert()
{
SqlConnection sqlcon
= new SqlConnection( " Data Source=LocalHost;Integrated Security=SSPI;Initial Catalog=xiaotest; " );
DateTime beginTime
= DateTime.Now;

DataTable dt
= new DataTable();
dt.Columns.Add(
" n " , typeof ( string ));
dt.Columns.Add(
" name " , typeof ( string ));
for ( int i = 1 ; i < 1000 ; i ++ )
{
DataRow r
= dt.NewRow();
r[
" n " ] = i;
r[
" name " ] = " xiao " ;
dt.Rows.Add(r);
}

sqlcon.Open();

using (SqlBulkCopy bulk = new SqlBulkCopy( " Data Source=LocalHost;Integrated Security=SSPI;Initial Catalog=xiaotest; " ))
{
bulk.BatchSize
= 1000 ;
bulk.DestinationTableName
= " test2 " ;
bulk.ColumnMappings.Add(
" n " , " n " );
bulk.ColumnMappings.Add(
" name " , " name " );
bulk.WriteToServer(dt);
}


DateTime endTime
= DateTime.Now;
TimeSpan useTime
= endTime - beginTime;
dt.Dispose();
time
= " 使用时间 " + useTime.TotalSeconds.ToString() + " " ;
sqlcon.Close();
sqlcon.Dispose();

 经过1000条数据的对比测试,一般性的循环插入与sqlbulk插入的时间对比为:

一般插入:使用时间0.5200008秒

使用builk插入:使用时间0.02秒

性能非常优越

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