AdminServiceGetUserList.cs

public async Task < IEnumerable < UserDto >> GetUserList(Guid selectedTenant) {
	_logger.LogInformation($ "The method {nameof(GetUserList)} is called");
	var appUsers = await _adminRepository.GetUsersWithRole(selectedTenant);
	if (!appUsers.Any()) throw AdminException.FromCode(ErrorCode.NoUsersInDbSelectedTenant);

	var users = await _graphFacade.GetUsersUsingGraph(selectedTenant);
	if (!users.Any()) throw AdminException.FromCode(ErrorCode.NoUsersInAdSelectedTenant);

	var combinedList = appUsers.Join(users, app = >app.UserId, graph =>new Guid(graph.Id), (app, graph) = >new UserDto {
		DisplayName = graph.DisplayName,
		UserName = graph.UserPrincipalName,
		Role = app.UserRole,
		UserId = app.UserId
	}).ToList < UserDto > ();

	_logger.LogInformation($ "Succesfully executed the method {nameof(GetUserList)}");
	return combinedList;
}