C# 计算循环中的时间

我正在执行这些webrequests循环，我需要跟踪自第一个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Unix时间，以后每次调用时（在10秒的间隔内），我都需要它引用第一次调用

使用此选项计算当前Unix时间：

公共函数UnixNow（）的长度为

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每当我调用UnixTime时，它都会给我当前时间，所以结果总是0。有什么提示吗？

当然，UnixNow将始终为您提供当前时间

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)

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谢谢你的回复，但是没有效果，仍然给我0作为回复。看起来很简单，但我就是搞不懂。对不起，我把问题搞错了。UnixNow（）代码在我的系统上运行得非常好。我建议使用

example.com

作为域名的示例，而不是使用其他有问题内容的注册域。你说得对，Joey。我完全忘记了。从现在起，我将使用example.com:）

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)