.net core EF 移除级联操作

在做实体映射时候 ，数据迁移会因为级联报错

 

 

 微软级联删除

 级联删除 - EF Core | Microsoft Learn

此时就要想到可能是因为级联的问题导致的所以需要移除级联

foreignKey.DeleteBehavior = DeleteBehavior.Restrict;

 protected override void OnModelCreating(ModelBuilder builder)
        {
            base.OnModelCreating(builder);
            var foreignKeys = builder.Model.GetEntityTypes().SelectMany(item =>  item.GetForeignKeys());
            foreach (var foreignKey in foreignKeys)
            {
                foreignKey.DeleteBehavior = DeleteBehavior.Restrict;
            }
            builder.CreateSeed();

        }