时间：2021-07-01 10:21:17 帮助过：31人阅读
1.大 批量 数据 操作 可以利用SqlBulkCopy类快速写入大 批量 数据 ，针对SQL Server的优化，可以写入DataRow 数据 ，DataTable,DataReader WriteToServer（DataTable）写入 数据 表 WriteToServer（DataRow[]）批次写入 数据 行 WriteToServer（DataTable ，
string connstr = "server=(local);database=northwind;integrated security=true;async=true"; // Fill up a DataSet DataSet ds = new DataSet(); SqlConnection conn = new SqlConnection(connstr); SqlDataAdapter dadp = new SqlDataAdapter("select * from customers", conn); dadp.Fill(ds); // Copy the Data to SqlServer SqlBulkCopy bcp = new SqlBulkCopy(connstr); bcp.DestinationTableName = "customers1"; bcp.WriteToServer(ds.Tables[0]); string connstr = "server=(local);database=northwind;integrated security=true;async=true"; SqlConnection conn = new SqlConnection(connstr); conn.Open(); SqlCommand cmd1 = new SqlCommand("select * from customers", conn); SqlCommand cmd2 = new SqlCommand("select * from orders", conn); SqlDataReader rdr1 = cmd1.ExecuteReader(); // next statement causes an error prior to SQL Server 2005 SqlDataReader rdr2 = cmd2.ExecuteReader(); // now you can reader from rdr1 and rdr2 at the same time.