How can my Addin support each REVIT 2012/2014 on same computer?

[Anonymous]

Hi.

some API/Object different REVIT 2012 / 2014. (like get_Element / GetElement)
i can not compile my source when i change REVIT 2014 RevitAPI.DLL & RevitApiUI.DLL.
so i think, make different DLL & different '.addin' file for REVIT 2014 / REVIT others.

but i can not know, what REVIT version call my DLL.

when OnStartUp function enroll button & event in my DLL. so i need i will use 2014.DLL or 2012.DLL.

but 

RevitProduct revitProduct1 = RevitProductUtility.GetAllInstalledRevitProducts()[0];

RevitAddInManifest revitAddInManifest = 
     Autodesk.RevitAddIns.AddInManifestUtility.GetRevitAddInManifest(
          revitProduct1.AllUsersAddInFolder + "\\RevitAddInUtilitySample.addin");

 this code only for first installed REVIT info.

sure, i think compare each Products[] between current excute REVIT version.

but i can not use Revit.Application.Application.VersionName because Revit is NULL.

how can i support each REVIT 2012/2014 on same computer?

[jeremytammik]

Dear combachi,

Yes, you have to create a different version of your .NET add-in assembly for each version of Revit.

They are placed in separate directories for loading, e.g. for Revit 2014 one of these:

/ProgramData/Autodesk/Revit/Addins/2014
/Users/All Users/Autodesk/Revit/Addins/2014
/Users/<username>/AppData/Roaming/Autodesk/Revit/Addins/2014

When your add-in is loaded, it can query the application object for its version information, e.g. using the the Application VersionBuild, VersionName and VersionNumber properties.

Best regards,

Jeremy

[Anonymous · Accepted solution]

I solved like this.

first.

make differrent DLL name & .addin name for REVIT2012 / REVIT2014.

Next. change code like this

Old Code

Autodesk.RevitAddIns.RevitProduct oRP = Autodesk.RevitAddIns.RevitProductUtility.GetAllInstalledRevitProducts()[0];
Autodesk.RevitAddIns.RevitAddInManifest oManifest = Autodesk.RevitAddIns.AddInManifestUtility.GetRevitAddInManifest(
oRP.AllUsersAddInFolder + @"\MyProgram.AddIn");

New Code

string sExeName = Path.GetFileNameWithoutExtension(System.Reflection.Assembly.GetExecutingAssembly().Location);



            foreach (Autodesk.RevitAddIns.RevitProduct oRP in Autodesk.RevitAddIns.RevitProductUtility.GetAllInstalledRevitProducts())
            {
                if (File.Exists(oRP.AllUsersAddInFolder + @"\" + sExeName + @".Addin") == true)
                {
                    Autodesk.RevitAddIns.RevitAddInManifest oManifest = Autodesk.RevitAddIns.AddInManifestUtility.GetRevitAddInManifest(
                        oRP.AllUsersAddInFolder + @"\" + sExeName + @".Addin");
                    break;
                }
            }