Freeze part persistently

The "n_parts" input is the number of parts that you want to freeze; the "tag()" array is the array of part tags of the parts that you want to freeze. The part tags can reference any part that you currently have open in the NX session (I suggest making sure the parts are opened fully before performing wave operations on them).

One way to call the function would be to create an array of the part tags that you want to freeze, then pass in the {array}.Length property (this is an integer telling us how many items are in the array) and the array of tags itself.

Option Strict Off
Imports System
Imports NXOpen
Imports NXOpen.UF

Module Module57
Sub Main()

Dim theSession As Session = Session.GetSession()
Dim theUfSession As UFSession = UFSession.GetUFSession

Dim freezePartTags(2) As Tag
freezePartTags(0) = part0.tag
freezePartTags(1) = part1.tag
freezePartTags(2) = part2.tag

theUfSession.Wave.FreezePersistently(freezePartTags.Length, freezePartTags)

End Sub
End Module

Note that in the code above, the array of parts to use is hardcoded into the journal. If/when you wanted to freeze other parts, you would need to change the source code of the journal - not really convenient. Better would be to use a dynamic array and use the "ReDim Preserve" keywords to add new items into the array.

Better still would be to use a List object. A list object is similar to a dynamic array, but it will resize itself making the code easier to write and maintain.

Option Strict Off
Imports System
Imports System.Collections.Generic
Imports NXOpen
Imports NXOpen.UF

Module Module57
Sub Main()

Dim theSession As Session = Session.GetSession()
Dim theUfSession As UFSession = UFSession.GetUFSession

Dim listFreezeTags As New List(Of Tag)
For i As Integer = 0 To 9
'get a part reference and add the tag to the list object
listFreezeTags.Add(somePart(i).Tag)
Next

theUfSession.Wave.FreezePersistently(listFreezeTags.Count, listFreezeTags.ToArray)

End Sub
End Module

In the case above, the {list}.Count property will return an integer telling us how many items are in the list (similar to the {array}.Length property); and the {list}.ToArray method will return an array of objects. The .ToArray method is very handy when working with the NXOpen API as it often requires an array of objects passed to a particular function; the {list}.ToArray method allows us to use a list to gather the objects then easily convert the list to the required array for the function.