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Writing to a FileStream behaves strangely, as observed by process monitor

Nov 12th, 2011
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  1. using (FileStream fs = new FileStream("c:\temp\test.txt", FileMode.Create, FileAccess.Write, FileShare.Read))
  2. {
  3. fs.Write(new byte[] { 1, 2, 3, 4, 5 }, 0, 5);
  4. fs.Close();
  5. }
  6.  
  7. 9:27:09.4561092 AM ConsoleApplication1.vshost.exe 2320 CreateFile C:temptest.txt SUCCESS Desired Access: Generic Read/Write, Disposition: OverwriteIf, Options: Synchronous IO Non-Alert, Non-Directory File, Open No Recall, Attributes: n/a, ShareMode: Read, AllocationSize: 0, OpenResult: Overwritten
  8. 9:27:12.2217409 AM ConsoleApplication1.vshost.exe 2320 WriteFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  9. 9:27:12.2219901 AM ConsoleApplication1.vshost.exe 2320 CloseFile C:temptest.txt SUCCESS
  10. 9:27:12.2234484 AM ConsoleApplication1.vshost.exe 2320 CreateFile C:temptest.txt SUCCESS Desired Access: Generic Read, Write Attributes, Disposition: Open, Options: Synchronous IO Non-Alert, Non-Directory File, Complete If Oplocked, Random Access, Attributes: N, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
  11. 9:27:12.2248664 AM ConsoleApplication1.vshost.exe 2320 QueryBasicInformationFile C:temptest.txt SUCCESS CreationTime: 10/29/2008 9:04:14 AM, LastAccessTime: 10/29/2008 9:27:12 AM, LastWriteTime: 10/29/2008 9:27:12 AM, ChangeTime: 10/29/2008 9:27:12 AM, FileAttributes: A
  12. 9:27:12.2250075 AM ConsoleApplication1.vshost.exe 2320 SetBasicInformationFile C:temptest.txt SUCCESS CreationTime: -1, LastAccessTime: -1, LastWriteTime: -1, ChangeTime: -1, FileAttributes: n/a
  13. 9:27:12.2255889 AM ConsoleApplication1.vshost.exe 2320 QueryStandardInformationFile C:temptest.txt SUCCESS AllocationSize: 8, EndOfFile: 5, NumberOfLinks: 1, DeletePending: False, Directory: False
  14. 9:27:12.2257571 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  15. 9:27:12.2259825 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  16. 9:27:12.2261588 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  17. 9:27:12.2265161 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 2
  18. 9:27:12.2268237 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  19. 9:27:12.2271332 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  20. 9:27:12.2272841 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  21. 9:27:12.2274779 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  22. 9:27:12.2276249 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  23. 9:27:12.2278766 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  24. 9:27:12.2282577 AM ConsoleApplication1.vshost.exe 2320 ReadFile C:temptest.txt SUCCESS Offset: 0, Length: 5
  25. 9:27:12.2284476 AM ConsoleApplication1.vshost.exe 2320 QueryFileInternalInformationFile C:temptest.txt SUCCESS IndexNumber: 0x2d000000016b88
  26. 9:27:12.2286183 AM ConsoleApplication1.vshost.exe 2320 CloseFile C:temptest.txt SUCCESS
  27. 9:27:12.2288759 AM ConsoleApplication1.vshost.exe 2320 CreateFile C:temptest.txt SUCCESS Desired Access: Read Attributes, Write Attributes, Disposition: Open, Options: , Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
  28. 9:27:12.2305722 AM ConsoleApplication1.vshost.exe 2320 QueryBasicInformationFile C:temptest.txt SUCCESS CreationTime: 10/29/2008 9:04:14 AM, LastAccessTime: 10/29/2008 9:27:12 AM, LastWriteTime: 10/29/2008 9:27:12 AM, ChangeTime: 10/29/2008 9:27:12 AM, FileAttributes: A
  29. 9:27:12.2307379 AM ConsoleApplication1.vshost.exe 2320 CloseFile C:temptest.txt SUCCESS
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