Installs an add-on, available on a domain, to the current object store. When an add-on is installed, the pre-import script (if one exists) is run. Then the import data is imported into the object store, creating new metadata classes, properties, and data objects. Finally, the post-import script is run.

This method results in one of the following outcomes:

• If the add-on doesn't have an installation record, the installation is attempted and an AddOnInstallationRecord object is created.
• If the add-on has an installation record with a status of "InstallationFailed", the installation is re-attempted and the installation record's properties are updated.
• If the add-on has an installation record with a status of "Installed", an exception (indicating that the add-on is already installed) is thrown.

Sub InstallAddOn ( _
	addOn As IAddOn _
)

void InstallAddOn(
	IAddOn addOn
)

void InstallAddOn(
	IAddOn^ addOn
)

function installAddOn(addOn);