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ColumnAttachment.IsValidColumn

Method
Description:
Says whether a FamilyInstance supports column attachments.
Remarks:
In-place columns do not support attachments.
Syntax
public static bool IsValidColumn(
	FamilyInstance familyInstance
)
Parameters
Parameter Type Description
familyInstance FamilyInstance A column.
Return Value
Exceptions
Exception Condition
ArgumentNullException A non-optional argument was null