Current User inside my remote event receiver will always be app@sharepoint

Question

I am working on a remote event receiver which uses app only permission. now i am trying to get the current user who execute the RER:-

context.Load(context.Web);
context.Load(context.Web.CurrentUser);
context.ExecuteQuery();
var o = context.Web.CurrentUser.LoginName;
listItem["Author"] = context.Web.EnsureUser(HttpContext.Current.User.Identity.Name);

but the context.Web.CurrentUser.LoginName will return app@sharepoint instead of the actual username, and the HttpContext.Current.User.Identity.Name will return object reference not set to an instance..... any advice on this please? Thanks

Answer 1

When you are handling an Item-triggered event, then the Properties parameter passed into your ProcessEvent or ProcessOneWayEvent methods has a ListEventProperties property which will contain the CurrentUserId, UserDisplayName, and UserLoginName that should all hold information about the user who "triggered" the event.