I have written a custom control in vb.net. I have built it up in a test project (to test) and compiled as an EXE.

The EXE file works exactly as planned, but i would like to use the custom text box i created in Access, when i try and register the DLL as a reference in Access, it says "cant add a reference to the specified file"

In Visual Studio, i created the custom text box, added a windows form application to the project, and used my control as a project reference.

Is it possible to use my control in Access?

In short, no you cannot use your custom VB.NET control in Access.

.NET is managed code, and Access can really only use unmanged or Native Win32 libraries.

Here is a link that outline some of the basic diffs between managed/unmangaged code.

http://www.codeguru.com/forum/showthread.php?t=370170