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    <p>You should be able to change the semantic of what ~ maps to by writing a custom VirtualPathProvider. Here is what it might look like. I have tested this on a simple case, but it probably needs polishing.</p> <p>I suggest you play around with it an a simple test app before you move it to your real scenario. That'll make it easier to isolate issues and iterate on it.</p> <pre><code>using System; using System.Collections; using System.IO; using System.Linq; using System.Web; using System.Web.Caching; using System.Web.Hosting; public class TildeModifyingVPP : VirtualPathProvider { // Change this to what you want ~ to map to private const string PseudoRoot = "~/PseudoAppRoot/"; public static void AppInitialize() { HostingEnvironment.RegisterVirtualPathProvider(new TildeModifyingVPP()); } private string ResolvePath(string virtualPath) { // Make it app relative, i.e. ~/... virtualPath = VirtualPathUtility.ToAppRelative(virtualPath); // Change the ~/ to our pseudo root return PseudoRoot + virtualPath.Substring(2); } public override bool FileExists(string virtualPath) { return base.FileExists(ResolvePath(virtualPath)); } public override VirtualFile GetFile(string virtualPath) { return new DelegatingVirtualFile(virtualPath, base.GetFile(ResolvePath(virtualPath))); } public override bool DirectoryExists(string virtualDir) { return base.DirectoryExists(ResolvePath(virtualDir)); } public override VirtualDirectory GetDirectory(string virtualDir) { return new DelegatingVirtualDirectory(virtualDir, base.GetDirectory(ResolvePath(virtualDir))); } public override CacheDependency GetCacheDependency(string virtualPath, IEnumerable virtualPathDependencies, DateTime utcStart) { virtualPathDependencies = virtualPathDependencies.Cast&lt;string&gt;().Select(vpath =&gt; ResolvePath(vpath)); return base.GetCacheDependency(virtualPath, virtualPathDependencies, utcStart); } } class DelegatingVirtualFile : VirtualFile { private VirtualFile _underlyingFile; public DelegatingVirtualFile(string virtualPath, VirtualFile underlyingFile): base(virtualPath) { _underlyingFile = underlyingFile; } public override Stream Open() { return _underlyingFile.Open(); } } class DelegatingVirtualDirectory : VirtualDirectory { private VirtualDirectory _underlyingDir; public DelegatingVirtualDirectory(string virtualPath, VirtualDirectory underlyingDir) : base(virtualPath) { _underlyingDir = underlyingDir; } public override IEnumerable Children { get { return _underlyingDir.Children; } } public override IEnumerable Directories { get { return _underlyingDir.Directories; } } public override IEnumerable Files { get { return _underlyingDir.Files; } } } </code></pre>
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