本文整理汇总了VB.NET中System.Web.Hosting.VirtualFile.Open方法的典型用法代码示例。如果您正苦于以下问题：VB.NET VirtualFile.Open方法的具体用法？VB.NET VirtualFile.Open怎么用？VB.NET VirtualFile.Open使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Web.Hosting.VirtualFile的用法示例。
在下文中一共展示了VirtualFile.Open方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: FormatTimeStamp
Private Function FormatTimeStamp(ByVal time As DateTime) As String
Return String.Format("{0} at {1}", _
time.ToLongDateString(), time.ToLongTimeString)
End Function
Public Overrides Function Open() As System.IO.Stream
Dim templateFile As String
templateFile = HostingEnvironment.ApplicationPhysicalPath & "App_Data\template.txt"
Dim pageTemplate As String
Dim now As DateTime
now = DateTime.Now
' Try to get the page template out of the cache.
pageTemplate = CType(HostingEnvironment.Cache.Get("pageTemplate"), String)
If pageTemplate Is Nothing Then
' Get the page template.
Try
pageTemplate = My.Computer.FileSystem.ReadAllText(templateFile)
Catch fileException As Exception
Throw fileException
End Try
' Set template timestamp.
pageTemplate = pageTemplate.Replace("%templateTimestamp%", _
FormatTimeStamp(Now))
' Make pageTemplate dependent on the template file.
Dim cd As CacheDependency
cd = New CacheDependency(templateFile)
' Put pageTemplate into cache for maximum of 20 minutes.
HostingEnvironment.Cache.Add("pageTemplate", pageTemplate, cd, _
Cache.NoAbsoluteExpiration, _
New TimeSpan(0, 20, 0), _
CacheItemPriority.Default, Nothing)
End If
' Put the page data into the template.
pageTemplate = pageTemplate.Replace("%file%", Me.Name)
pageTemplate = pageTemplate.Replace("%content%", content)
' Get the data timestamp from the cache.
Dim dataTimeStamp As DateTime
dataTimeStamp = CType(HostingEnvironment.Cache.Get("dataTimeStamp"), DateTime)
pageTemplate = pageTemplate.Replace("%dataTimestamp%", _
FormatTimeStamp(dataTimeStamp))
' Set a timestamp for the page.
Dim pageTimeStamp As String
pageTimeStamp = FormatTimeStamp(now)
pageTemplate = pageTemplate.Replace("%pageTimestamp%", pageTimeStamp)
' Put the page content on the stream.
Dim stream As MemoryStream
stream = New MemoryStream()
Dim writer As StreamWriter
writer = New StreamWriter(stream)
writer.Write(pageTemplate)
writer.Flush()
stream.Seek(0, SeekOrigin.Begin)
Return stream
End Function