我有两个看起来像这样的实体:public class Account{ public int AccountId { get; set; } public string AccountName { get; set; } public decimal AccountBalance { get; set; } public virtual Expense Expense { get; set;} }public class Expense{ public int ExpenseId { get; set; } public string ExpenseName { get; set; } public decimal ExpenseAmount { get; set; } public virtual ICollection Accounts { get; }}如果我想要一个新添加Expense到DbContext.Expenses与Account已经存储中的对象Database,做我还需要这个新添加Expense到Account Entity?在我的测试中Expenses,Account Model如果我只是创建一个新Expense实体,则无法从访问关联。
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