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MAPISendDocuments (mapi32)
MAPISendDocuments - Sends a standard message with one or more attached files and a cover note.

C# Signature:

  /// <summary>
  /// The MAPISendDocuments function sends a standard message with one or more attached files and a cover note.
  /// The cover note is a dialog box that allows the user to enter a list of recipients and an optional
  /// message. MAPISendDocuments differs from the MAPISendMail function in that it allows
  /// less flexibility in message generation.
  /// </summary>
  [DllImport("MAPI32.DLL", CharSet=CharSet.Ansi)]
  public static extern uint MAPISendDocuments(IntPtr ulUIParam, string lpszDelimChar, string lpszFullPaths,
    string lpszFileNames, uint ulReserved);

VB Signature:

  Please add!

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Tips & Tricks:

I'm finding that calling this function sets your Current Working Directory to something other than what it was before the call is made. In my case, it was setting it to @"C:\Program Files\Common Files\SYSTEM\MSMAPI\1033"

You may want to save and then restore your working dir if you use this function:

string currentDirectory = System.IO.Directory.GetCurrentDirectory();

MAPISendDocuments (....);

// Restore the proper working directory.

System.IO.Directory.SetCurrentDirectory (currentDirectory);

Sample Code:

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