Click here to view and discuss this page in DocCommentXchange. In the future, you will be sent there automatically.
检查外键是否可为空。
Public ReadOnly Property IsForeignKeyNullable As Boolean
public bool IsForeignKeyNullable {get;}
ULException 类 发生 SQL 错误(包括索引不是外键)。
如果外键可为空,则返回 true;如果外键不可为空,则返回 false。