Create a Multipart-Mixed MIME Message

Creates a multipart-mixed MIME message with the 1st part containing plain-text, and the 2nd part containing a GIF image.

Download Chilkat MIME ActiveX

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @mime int
    EXEC @hr = sp_OACreate 'Chilkat.Mime', @mime OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    EXEC sp_OAMethod @mime, 'UnlockComponent', @success OUT, 'Anything for 30-day trial.'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    --  Initialize a multipart-mixed MIME message:
    EXEC sp_OAMethod @mime, 'NewMultipartMixed', NULL

    --  Each sub-part will be prepared, then added to the
    --  top-level multipart/mixed MIME object, and then written
    --  to a file.

    --  First the plain-text sub-part
    --  Add a few header fields:
    DECLARE @textPart int
    EXEC @hr = sp_OACreate 'Chilkat.Mime', @textPart OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OAMethod @textPart, 'AddHeaderField', NULL, 'Description', 'this is a test'
    EXEC sp_OAMethod @textPart, 'AddHeaderField', NULL, 'MyId', '123'
    EXEC sp_OAMethod @textPart, 'SetBodyFromPlainText', NULL, 'This is the plain-text body'

    --  Now for a GIF image:
    DECLARE @imagePart int
    EXEC @hr = sp_OACreate 'Chilkat.Mime', @imagePart OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OAMethod @imagePart, 'SetBodyFromFile', @success OUT, 'starfish.gif'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imagePart, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    --  Append each sub-part to the top-level MIME object:
    EXEC sp_OAMethod @mime, 'AppendPart', NULL, @textPart
    EXEC sp_OAMethod @mime, 'AppendPart', NULL, @imagePart

    --  Write the full multipart-mixed MIME to a file.
    EXEC sp_OAMethod @mime, 'SaveMime', @success OUT, 'out.mim'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
        RETURN
      END

    EXEC sp_OAMethod @mime, 'GetMime', @sTmp0 OUT
    PRINT @sTmp0

    --  The MIME should look something like this:
    --  (See more comments following this sample output...)

    --  
Content-Type: multipart/mixed;
 boundary="------------080503030004040303020208"

This is a multi-part message in MIME format.

--------------080503030004040303020208
Description: this is a test
MyId: 123
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

This is the plain-text body
--------------080503030004040303020208
Content-Disposition: attachment; filename="starfish.gif"
Content-Transfer-Encoding: base64
Content-Type: image/gif; name="starfish.gif"

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--------------080503030004040303020208--

    --  To explicitly set the boundary, set the Boundary property, like this:
    EXEC sp_OASetProperty @mime, 'Boundary', 'SOME_UNIQUE_BOUNDARY_STRING'

    --  To eliminate the "This is a multi-part message in MIME format."
    --  from the output, set the UseMmDescription property = 0
    EXEC sp_OASetProperty @mime, 'UseMmDescription', 0

    EXEC sp_OAMethod @mime, 'GetMime', @sTmp0 OUT
    PRINT @sTmp0

    --  The MIME now looks like this:
    --  
Content-Type: multipart/mixed;
 boundary="SOME_UNIQUE_BOUNDARY_STRING"

--SOME_UNIQUE_BOUNDARY_STRING
Description: this is a test
MyId: 123
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

This is the plain-text body
--SOME_UNIQUE_BOUNDARY_STRING
Content-Disposition: attachment; filename="starfish.gif"
Content-Transfer-Encoding: base64
Content-Type: image/gif; name="starfish.gif"

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--SOME_UNIQUE_BOUNDARY_STRING--

END
GO