public async Task ExpelMemberAsync(UserAndOrganizationDto userAndOrg, int projectId, string expelUserId) { var project = await _projectsDbSet .Include(x => x.Members) .FirstOrDefaultAsync(x => x.Id == projectId && x.OrganizationId == userAndOrg.OrganizationId); await ValidateExpelMemberAsync(project, userAndOrg); project?.Members.Remove(project.Members.FirstOrDefault(x => x.Id == expelUserId)); if (project != null) { await _wallService.RemoveMemberFromWallAsync(expelUserId, project.WallId); } await _uow.SaveChangesAsync(userAndOrg.UserId); }