Can MS Outlook add on call a .Net dll?

Question

Our customer needs some functionality added to Outlook. So they plan to create an add-on that calls some functionality we deliver. Probably this functionality will be implemented in a .Net assembly. Is it possible for an Outlook add-on to call some procedures in the .net assembly? I am not sure how to implement Outlook add-ons, and have no idea which method they will choose implement it in, I just want to know however, if it is possible.

Thanks Jeeji

can be done, e.g http://www.codeproject.com/KB/office/MarkDeletedItemsRead.aspx — Damith, Oct 23 '11 at 19:43
if you found your answer, toggle a check mark in left hand of correct answer to green. — Saeed Amiri, Oct 23 '11 at 20:04

score 2 · Accepted Answer · edited May 23 '17 at 12:12

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You can program Outlook add-ons in .Net, so there is no reason they shouldn't be able to call your assembly from their code

Update: You can make a .Net assembly COM compatible. This answer outlines how you would go about it

edited May 23 '17 at 12:12

Community

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answered Oct 23 '11 at 19:29

Dan McClain

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Thanks for your answer. The thing is that I am not sure which technology they will use to program the Add-on. So I will need some standard way of giving them an interface which they can call. 1- Can a .Net library be called, no matter which technology they use? 2- Is there any other standard way of specifying an interface, such as COM in the old days? 3- Is it a restriction that my assembly opens a modal dialog that returns a value to the caller depending on which choices the user made in the modal dialog? Thanks a lot Jeeji – Jihad Haddad Oct 24 '11 at 06:55
@JihadHaddad: I've update my answer with details about making the assembly COM compatible – Dan McClain Oct 24 '11 at 11:19

Can MS Outlook add on call a .Net dll?

1 Answers1