SQL批量插入数据【万级】

1、每4000条插入一次

for (int i = 0; i < dt.Rows.Count; i++)
{

　　IsTBProductForStockInfo model = new IsTBProductForStockInfo();
　　model.SyncSkuCode = dt.Rows[i]["SyncSkuCode"].ToString();
　　model.SkuId = dt.Rows[i]["SkuId"].ToString();
　　info.Add(model);
　　rowcount = rowcount + 1;
　　tabIndex = tabIndex + 1;
　　if (rowcount == pagesize)
　　{
　　if (listsize - tabIndex < 4000)
　　{ 
　　　　pagesize = listsize - tabIndex;
　　}
　　　　BatchAddNciicUserInfo(info)
　　}

}



public static string BatchAddNciicUserInfo(List<IsTBProductForStockInfo> listData)
{
int i = 0;
using (SqlConnection conn = new SqlConnection(ConnectionString))
{
if (conn.State != ConnectionState.Open)
{
conn.Open();
}
using (SqlTransaction tran = conn.BeginTransaction())
{
try
{
using (SqlBulkCopy sqlDB = new SqlBulkCopy(conn, SqlBulkCopyOptions.Default, tran))
{

DataTable dtSource = new DataTable();
dtSource.Columns.Add("SkuId", typeof(int));
dtSource.Columns.Add("SyncSkuCode", typeof(string));
dtSource.Columns.Add("Spec", typeof(string));
dtSource.Columns.Add("OldQtyonhand", typeof(int));
dtSource.Columns.Add("NewQtyonhand", typeof(int));
dtSource.Columns.Add("Status", typeof(string));
dtSource.Columns.Add("Times", typeof(DateTime));
dtSource.Columns.Add("usersecretkey", typeof(string));
foreach (var item in listData)
{
DataRow dr = dtSource.NewRow();
dr["SkuId"] = item.SkuId;
dr["SyncSkuCode"] = item.SyncSkuCode;
dr["Spec"] = item.Spec;
dr["OldQtyonhand"] = item.OldQtyonhand;
dr["NewQtyonhand"] = item.NewQtyonhand;
dr["Status"] = item.Status;
dr["Times"] = DateTime.Now;
dr["usersecretkey"] = item.usersecretkey;
dtSource.Rows.Add(dr);
i = i + 1; 
} 
sqlDB.BatchSize = 10000;
sqlDB.BulkCopyTimeout = 60;
sqlDB.DestinationTableName = string.Format("dbo.za_IsTBProductForStock");
sqlDB.ColumnMappings.Add("SkuId", "SkuId");
sqlDB.ColumnMappings.Add("SyncSkuCode", "SyncSkuCode");
sqlDB.ColumnMappings.Add("Spec", "Spec");
sqlDB.ColumnMappings.Add("OldQtyonhand", "OldQtyonhand");
sqlDB.ColumnMappings.Add("NewQtyonhand", "NewQtyonhand");
sqlDB.ColumnMappings.Add("Status", "Status");
sqlDB.ColumnMappings.Add("Times", "Times");
sqlDB.ColumnMappings.Add("usersecretkey", "usersecretkey"); 
sqlDB.WriteToServer(dtSource);
}
tran.Commit();
}
catch (Exception ex)
{
tran.Rollback();
throw ex;
}
}

}
return "插入成功";
}

10000条数据用时25秒左右！！！！