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CoreDb.Relation 方法

X#
Return the linking expression of a specified relation.

命名空间:  XSharp
程序集:  XSharp.Core (在 XSharp.Core.dll 中) 版本:2.22 GA
语法
 STATIC METHOD Relation(
	nPos AS DWORD,
	sRel REF STRING
) AS LOGIC
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参数

nPos
类型:UInt32
The position of the desired relation in the list of current work area relations. The relations are numbered according to the order in which they were defined by relation setting.
sRel
类型:String

返回值

类型:Boolean
TRUE if successful; otherwise, FALSE.
备注
This function is like DBSetRelation(). 这个函数,不会调用错误处理程序,因此如果失败,不会产生运行时错误消息或创建错误对象。 因此,检查返回值以确定函数是否成功是很重要的。

LastRddError 属性将包含关于发生的任何错误的必要信息。
参见