I'm currently working on a program in C# that works with data from ACT!. To be able to search and update a record you need to use the GUID. The only way I have been able to get a GUID from the framework is when I create a new record.
How can I retrieve GUIDs from existing records in ACT!?
Well, it depends which version of ACT! you have, but you'll almost certainly need the ACT! SDK.
That can be downloaded from here: ACT! SDK Download
There's a good post on the ACT! developer forum that has a .zip file attachment. The attachment contains some developer training materials, posted by a Sage employee, and within that material is a complete example for manipulating contact data.
From the included "readme":
Insights2007ACTSDKTraining.zip contains three files:
ACT! SDK Training.pdf is the presentation that was used for the session.
Samples.zip contains a contact-bound control demonstrating entity data binding and design-time capabilities.
Act.DevNet.Extensibility.Plugin.zip is the pluin template. Copy it to your Visual Studio 2005\Templates\ProjectTemplates directory. It will then be accessible via File->New Project, Select Visual C#, under My Templates.
The link for this is: ACT! SDK Training Session Material
