VB.net / asp.net：获取没有文件名的URL(VB.net / asp.net: Get URL without filename)

 您可以使用Request实例轻松获取相关文件路径，然后使用它，使用Path类应该可以提供帮助： 
 
Dim relativePath = Request.AppRelativeCurrentExecutionFilePath
Dim relativeDirectoryPath = System.IO.Path.GetDirectoryName(relativePath)
 
 值得注意的是， GetDirectoryName可能会改变你的斜杠，所以你可以扩展路径： 
 
Dim mappedPath = HttpContext.Current.Server.MapPath(newpath)
 
 所以，为了消除冗余，我们可以缩短这个： 
 
Dim path = _ 
    Server.MapPath( _ 
        Path.GetDirectoryName( _ 
            Request.AppRelativeCurrentExecutionFilePath)))
 
 但是你需要检查可能的例外情况。 

You can easily get a relative file path using the Request instance, then work with that, using Path class ought to help:
 
Dim relativePath = Request.AppRelativeCurrentExecutionFilePath
Dim relativeDirectoryPath = System.IO.Path.GetDirectoryName(relativePath)
 
It's worth noting that GetDirectoryName might transform your slashes, so you could expand the path:
 
Dim mappedPath = HttpContext.Current.Server.MapPath(newpath)
 
So, to remove redundancy, we could shorten this:
 
Dim path = _ 
    Server.MapPath( _ 
        Path.GetDirectoryName( _ 
            Request.AppRelativeCurrentExecutionFilePath)))
 
But you'll need to check for possible exceptions.