测试一段程序代码执行时间的方法

Using System.Diagnostics;

Stopwatch st = new Stopwatch();
st.Start();
Repeater1.DataSource = SQLHelper.ExcuteDataSet().Table[0];
Repeater1.DataBind();
st.Stop();
Label1.Text = st.ElapsedMilliseconds.ToString() + "ms"; //运行的总毫秒数.