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CoreDb.FieldInfo 方法 (UInt32, UInt32, Object)

X#
Retrieve and optionally change information about a column.

命名空间:  XSharp
程序集:  XSharp.Core (在 XSharp.Core.dll 中) 版本:2.22 GA
语法
 STATIC METHOD FieldInfo(
	nOrdinal AS DWORD,
	nFldPos AS DWORD,
	oRet REF Object
) AS LOGIC
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参数

nOrdinal
类型:UInt32
Specifies the type of information.
nFldPos
类型:UInt32
The ONE based position of the field in the database file structure.
oRet
类型:Object
The returnvalue is returned through this parameter. When set on entry this is the new value of the setting.

返回值

类型:Boolean
TRUE if successful; otherwise, FALSE.
备注
This function is like DBFieldInfo(). 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