"To be able to box/unbox FileItems and DirectoryItems from FileInfo and DirectoryInfo objects."
If we do this, then the FileBrowserContentProvider will be dependent from these objects and this will restrict the provider to be used with Virtual, Physical or UNC file systems only, where the FileInfo and DirectoryInfo objects can be used. This means that the provider cannot be used to connect the RadFileExplorer to a DataBase for example. This is why, we do not plan to change the FileItem and DirectoryItem object's implementation.
I hope that the provided information helps.
the Telerik team
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