c# - 在循环中计算经过的 Unix 时间

Question

我正在执行这些 webrequests 循环，我需要跟踪自第一次请求以来经过的时间（unix 时间）。例如：

    Dim post1 String = "http://www.xxx.com/......" & UnixTimeNow1stCall & "......"
    Dim postReq1 As HttpWebRequest = DirectCast(WebRequest.Create(post1), HttpWebRequest)

    Dim post2 String = "http://www.xxx.com/......" & UnixTimeElasped1stCall& "......"
    Dim postReq2 As HttpWebRequest = DirectCast(WebRequest.Create(post2), HttpWebRequest)


    Dim post3 String = "http://www.xxx.com/......" & UnixTimeElasped1stCall& "......"
    Dim postReq3 As HttpWebRequest = DirectCast(WebRequest.Create(post3), HttpWebRequest)

*LOOP again*

等等。换句话说，我需要在第一次调用中锁定当前的 Unix 时间，并且每当我稍后调用时（以 10 秒为间隔），我需要它来引用第一次调用。

使用它来计算当前的 Unix 时间：

公共函数 UnixNow() 只要

    Dim _TimeSpan As TimeSpan = (DateTime.UtcNow - New DateTime(1970, 1, 1, 0, 0, 0))

    Return CLng(_TimeSpan.TotalSeconds)

End Function

每当我打电话给 UnixTime 时，都会给我当前时间，所以结果总是 0。有什么提示吗？

Answer 1

当然 UnixNow 总是会给你当前时间...

存储它并计算差异

Dim unixTimeFirstRequest Long = UnixNow()
Dim post1 String = "http://www.xxx.com/......" & unixTimeFirstRequest & "......"
Dim postReq1 As HttpWebRequest = DirectCast(WebRequest.Create(post1), HttpWebRequest)

Dim post2 String = "http://www.xxx.com/......" & UnixNow() - unixTimeFirstRequest & "......"
Dim postReq2 As HttpWebRequest = DirectCast(WebRequest.Create(post2), HttpWebRequest)


Dim post3 String = "http://www.xxx.com/......" & UnixNow() - unixTimeFirstRequest & "......"
Dim postReq3 As HttpWebRequest = DirectCast(WebRequest.Create(post3), HttpWebRequest)