SqlTransaction是否执行批处理操作而不重复访问数据库?我不知道,因为SqlTransaction似乎将一堆SQL命令组合在一起并最终提交到数据库。但是,每个命令都会运行一个ExecuteNonQuery(),从而导致数据库访问。
public List<Task> SubmitSheet(List<Task> tList)
{
SqlConnection conn = A2.Controller.Utils.conn;
SqlTransaction submitTransaction = null;
try
{
conn.Open();
submitTransaction = conn.BeginTransaction();
foreach (Task t in tList) {
SqlCommand submitCmd = new SqlCommand("SubmitTask", conn);
submitCmd.CommandType = CommandType.StoredProcedure;
submitCmd.Transaction = submitTransaction;
submitCmd.Parameters.Add("@tid", SqlDbType.Int).Value = t.Id;
submitCmd.ExecuteNonQuery();
}
submitTransaction.Commit();
}
finally {
if (conn.State == ConnectionState.Open) conn.Close();
}
return tList;
}
答案 0 :(得分:2)
是的,正如@CKoenig所说,它会为每个命令访问数据库。如果您要批量处理命令,请尝试使用SqlDataAdapter.AddToBatch
http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldataadapter.aspx。