Dynamics CRM 2016 Plugin triggered when user role assignments are changed

Question

Is it possible in Dynamics CRM 2016 to have a plugin that fires when any user's role assignments are changed?

If so, what message and entity would I register this plugin on?

Answer 1

You need to register plugin to Associate message,primary and secondary entity as none.

In plugin, you need to check for context.MessageName ("Associate" or "Disassociate") and context.InputParameters[“Relationship”] (we are looking for "systemuserroles_association")

code to check conditions would be something like that

//all usual plugin stuff here

if (context.InputParameters.Contains("Relationship")) {
    relationshipName = context.InputParameters["Relationship"].ToString();
}                                   

// Check the “Relationship Name” with your intended one
if (relationshipName != "systemuserroles_association") {
    return;
} 

if (context.MessageName == "Associate") {
    //logic when role added
}
if (context.MessageName == "Disassociate") {
    //logic when role removed
}
else {
    //not interested
}

I haven't compiled the code, but it should give you idea how to proceed.