EFCore的外键级联删除导致的【可能会导致循环或多重级联路径】

亲测有效，摘自 https://www.cnblogs.com/caijt/p/11998440.html#commentform

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            var foreignKeys = modelBuilder.Model.GetEntityTypes().SelectMany(e => e.GetForeignKeys()).Where(fk => fk.DeleteBehavior == DeleteBehavior.Cascade);
            foreach (var fk in foreignKeys)
            {
                fk.DeleteBehavior = DeleteBehavior.Restrict;
            }
            base.OnModelCreating(modelBuilder);
        }