ASP.NET 4 Unleased - p 117

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ASP.NET 4 Unleased - p 117

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1134 CHAPTER 24 Advanced Navigation Typically, you override the FileExists() and GetFile() methods to retrieve a file from your data store. If you want to represent directories, you also need to override the DirectoryExists() and GetDirectory() methods. Several of these methods are related to caching. The VirtualPathProvider needs to know when a file has been modified so that it can retrieve the new version of the file and compile it. By default, the ASP.NET Framework uses a file dependency to determine when a file has been modified on the hard drive. However, in this situation a SqlCacheDependency is used because the files will...

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