using System.Diagnostics; Stopwatch sw = new Stopwatch(); sw.Start(); List<NoteInfo> notelist = Note.GetAllNotes(); dgvNoteList.DataSource = notelist; sw.Stop(); TimeSpan ts = sw.Elapsed; string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10); LblTimeSpan.Text = "耗时:" elapsedTime " 共计:" notelist.Count "条记录";