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
///
/// bulk插入
///
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 <</SPAN> 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() + "秒";
sqlcon.Close();
sqlcon.Dispose();
/// bulk插入
///
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 <</SPAN> 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() + "秒";
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