在这个例子中: Sub Button1_Click(sender As Object, ByVal e As EventArgs) Handles Button1.Click
Dim stopwatch1, stopwatch2 As New Stopwatch : Dim EndLoop As ULong = 10000
stopwatch1.Start()
Fo
在以下几点: public class p
{
short? mID;
short? dID;
}
short id = p.mID ?? -p.dID.Value;
编译器给我的错误: Error 21 Cannot implicitly convert type 'int' to 'short'. An explicit conversion exists (a