Delegate is a great way to implement Callback operation. But, interface is good for the implementation of Callback in different scenario which I have mentioned above. Please read carefully and understand the code snippets. I have also attached code files. Writing code is good but code with proper design approach increases the quality of code.
Windows Vista and Windows 7 make use of a c:\windows\winsxs folder to store backups of various install files and/or files replaced by updates. I'm not completely certain on everything Windows stores there.This seems to be completely separate from System Restore.he WinSxS\Backup folder: In previous versions of Windows, such as XP there was a component called 'Windows File Protection' which was used to make sure that all of the many system files were protected and backed up. These files were backed up in the %systemroot%\System32\dllcache folder.
Answer: FEX files are Uncommon Files primarily associated with WebFOCUS / FOCUS / Web390 Procedure File (Information Builders). FEX files are also associated with Focus File and FileViewPro. Additional types of files may also be using the FEX file extension.If you are aware of any other file formats using the FEX file extension, please contact us so that we can update our information accordingly.indows might tell you that you can't open it, or in the worst case, you might encounter a FEX file related error message. Before you can open a FEX file, you'll need to figure out what kind of file the FEX file extension refers to.