Metadata in wmf file?

Is there a way to store and retrieve cu开发者_StackOverflow社区stom metadata in a wmf file, please notice that i don't mean Windows Media Format?

Optional using .net and C# ?

The short answer is "no", as WMF doesn't support meta data other than basic things like type, version, size and number of items.

For retrieving the info you can refer the following path.

http://www.codeproject.com/KB/audio-video/MetaDataReader.aspx

Moreover you need to download the WMF SDK. Using following link.

http://www.microsoft.com/downloads/en/confirmation.aspx?FamilyID=d9c6f6e0-dd2b-427e-9787-73312bb62532

It supports following attributes.

Index    Name                   Stream Language Type  
 -----    ------                 ------ -------- ----  
   0      Duration                    0    0    QWORD  
   1      Bitrate                     0    0    DWORD  
   2      Seekable                    0    0     BOOL  
   3      Stridable                   0    0     BOOL  
   4      Broadcast                   0    0     BOOL  
   5      Is_Protected                0    0     BOOL  
   6      Is_Trusted                  0    0     BOOL  
   7      Signature_Name              0    0   STRING  
   8      HasAudio                    0    0     BOOL  
   9      HasImage                    0    0     BOOL  
  10      HasScript                   0    0     BOOL  
  11      HasVideo                    0    0     BOOL  
  12      CurrentBitrate              0    0    DWORD  
  13      OptimalBitrate              0    0    DWORD  
  14      HasAttachedImages           0    0     BOOL  
  15      Can_Skip_Backward           0    0     BOOL  
  16      Can_Skip_Forward            0    0     BOOL  
  17      FileSize                    0    0    QWORD  
  18      HasArbitraryDataStream      0    0     BOOL  
  19      HasFileTransferStream       0    0     BOOL  
  20      WM/ContainerFormat          0    0    DWORD  
  21      Title                       0    0   STRING  
  22      Author                      0    0   STRING  
  23      Copyright                   0    0   STRING  
  24      Description                 0    0   STRING  
  25      Rating                      0    0   STRING  
  26      BannerImageURL              0    0   STRING  
  27      CopyrightURL                0    0   STRING  
  28      WMFSDKVersion               0    0   STRING  
  29      WMFSDKNeeded                0    0   STRING  
  30      IsVBR                       0    0     BOOL  
  31      WM/AlbumTitle               0    0   STRING  
  32      WM/Track                    0    0   STRING  
  33      WM/PromotionURL             0    0   STRING  
  34      WM/AlbumCoverURL            0    0   STRING  
  35      WM/Genre                    0    0   STRING  
  36      WM/Year                     0    0   STRING  
  37      WM/GenreID                  0    0   STRING  
  38      WM/Composer                 0    0   STRING  
  39      WM/Lyrics                   0    0   STRING  
  40      WM/ToolName                 0    0   STRING  
  41      WM/ToolVersion              0    0   STRING  
  42      WM/AlbumArtist              0    0   STRING  
  43      WM/AuthorURL                0    0   STRING  
  44      WM/AudioFileURL             0    0   STRING  
  45      WM/Language                 0    0   STRING  
  46      WM/ParentalRating           0    0   STRING  
  47      WM/BeatsPerMinute           0    0   STRING  
  48      WM/InitialKey               0    0   STRING  
  49      WM/Mood                     0    0   STRING  
  50      WM/DVDID                    0    0   STRING  
  51      WM/UniqueFileIdentifier     0    0   STRING  
  52      WM/ModifiedBy               0    0   STRING  
  53      WM/RadioStationName         0    0   STRING  
  54      WM/RadioStationOwner        0    0   STRING  
  55      WM/PlaylistDelay            0    0   STRING  
  56      WM/Codec                    0    0   STRING  
  57      WM/DRM                      0    0   STRING  
  58      WM/ISRC                     0    0   STRING  
  59      WM/Provider                 0    0   STRING  
  60      WM/ProviderRating           0    0   STRING  
  61      WM/ProviderStyle            0    0   STRING  
  62      WM/ContentDistributor       0    0   STRING  
  63      WM/SubscriptionContentID    0    0   STRING  
  64      WM/ASFPacketCount           0    0    QWORD  
  65      WM/ASFSecurityObjectsSize   0    0    QWORD

WMF does not support metadata like author, title, description, etc. However, according to the Windows Metafile Format Specification, page 192, comments (in your case custom metadata) can be written to MFCOMMENT printer escape.