SQL Server

Convert HTML Text to an MHT Archive

Demonstrates Mht.HtmlToMHT, which creates an MHT web archive from an in-memory HTML string and returns the complete MHT MIME text.

Background. An MHT (MHTML) web archive is a single MIME file that bundles an HTML page together with its referenced resources, such as images and style sheets, so the page can be stored or viewed offline as one file.

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-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @mht int
    EXEC @hr = sp_OACreate 'Chilkat.Mht', @mht OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  Create an MHT web archive from an in-memory HTML string and return the complete MHT MIME text.
    DECLARE @htmlText nvarchar(4000)
    SELECT @htmlText = '<html><head><title>Example</title></head><body><h1>Hello</h1><p>An example HTML page.</p></body></html>'
    DECLARE @mhtText nvarchar(4000)
    EXEC sp_OAMethod @mht, 'HtmlToMHT', @mhtText OUT, @htmlText
    EXEC sp_OAGetProperty @mht, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @mht, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mht
        RETURN
      END

    PRINT @mhtText

    EXEC @hr = sp_OADestroy @mht


END
GO