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ColumnAttachment.IsValidTarget(FamilyInstance, Element)

Method
Description:
Says whether the element can be used as a target for a new attachment.
Remarks:
Valid targets are roofs, floors, and ceilings. Beams and braces are also valid targets, except for slanted columns.
Syntax
public static bool IsValidTarget(
	FamilyInstance column,
	Element target
)
Parameters
Parameter Type Description
column FamilyInstance The column to attach. If the target is a beam or brace, the column will be checked to see if it is slanted. Otherwise, this argument is not used and may be omitted.
target Element A proposed target element for a column attachment.
Return Value
Exceptions
Exception Condition
ArgumentNullException A non-optional argument was null