The IUpgradeable interface allows module developers to apply code during install/upgrades based on the module version - this works in a similar fashion to DotNetNuke's upgrade based code.

The IUpgradeable interface includes a single method, UpgradeModule, which enables the module to execute custom business logic depending on the current version of the module being installed.

Public Interface IUpgradeable

     Function UpgradeModule(ByVal Version As String) As String

End Interface

UpgradeModule is called once for each script version included with the module. It is called only for script versions that are later than the version of the currently installed module.


References

• https://www.dnnsoftware.com/Resources/Books-and-Documentation/Project-and-Technical-Documentation.aspx
• Using IUpgradeable under DotNetNuke 5
• Using IUpgradeable to add custom permissions - Note: this is no longer necessary as custom permissions can be added via the Module Component but the article has other useful background information and helps as an example.