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Wrriting Word add-in’s “meta-data”/”user-data” within a Word document?

I’m developing a Word add-in, and I need to be able to write some kind of add-in’s “meta-data” or ”user-data” within the Word document. This data should be present inside the document, readable and editable by add-in (i.e. VBA), and of course, not directly visible by end user… How this can be done?
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npaun
Asked:
npaun
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1 Solution
 
Phillip BurtonDirector, Practice Manager and Computing ConsultantCommented:
I don't think you can really do that.

You can certainly hide it as custom metadata, which I think most software programmers do, but I think the end user always has the choice of seeing it. See the article about "Viewing Microsoft Word document properties from the File Menu" for more information.

If you are worried about the end user editing it, then you could always add a checksum and test whether it has been altered.

If the question is: how do you access Word's document properties from VBA?, then there is an article on how to do that there to.
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GrahamSkanRetiredCommented:
You can store text as one or more document variables. They are like custom properties, but are not directly visible in the user interface.
Here is some sample VBA code
    Dim var As Variable
    
    Set var = ActiveDocument.Variables.Add("MyVar", "Some text")
    var.value = "some new text"
    MsgBox ActiveDocument.Variables("MyVar").value

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npaunAuthor Commented:
Than you for the posts

@GrahamSkan
This is pretty much what need. At first, I thought that it would not be the solution, as I didn't expect that the content of the Variables is saved in file when document is closed and that it will be lost as soon as Word doc is closed, but test demanded me, and the Variables content is saved with the document, just as I need...

One more thing: is there a way to clear the Variables property, and tho remove its members one by one? Since, as far as I can see, it doesn't have a Remove method, so I don't see how to remove elements of this "collection"?
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GrahamSkanRetiredCommented:
There are no special methods to handle the Variables collection. Try this to clear all document variables:
    Do While ActiveDocument.Variables.Count > 0
        ActiveDocument.Variables(1).Delete
    Loop

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npaunAuthor Commented:
@GrahamSkan
Problem solved!
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