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Compare Selected Objects and Their Persistent Reference IDs Example (VB.NET)

This example shows how to determine if two selected entities are the same entities and if those entities have the same persistent IDs.

NOTE: Using IModelDocExtension::IsSamePersistentID and ISldWorks::IsSame might be helpful when your application is passed two entities that it didn't select, and your application needs to know if they're the same entity.

'----------------------------------------------------------
' Preconditions:
' 1. Open a part document and select two different entities
'    (e.g., face, edge, vertex, etc.)
' 2. Open the Immediate window.
'
' Postconditions:
' 1. Compares the selected entities.
' 2. Examine the code and Immediate window.
'----------------------------------------------------------
Imports SolidWorks.Interop.sldworks
Imports SolidWorks.Interop.swconst
Imports System
Imports System.Diagnostics
 
Partial Class SolidWorksMacro
 
    Public Sub main()
 
 
        Dim swModel As ModelDoc2
        Dim swSelMgr As SelectionMgr
        Dim swModelDocExt As ModelDocExtension
        Dim selObj1 As Object
        Dim selObj2 As Object
        Dim selObjPID1 As Object
        Dim selObjPID2 As Object
 
 
        swModel = swApp.ActiveDoc
        swSelMgr = swModel.SelectionManager
        swModelDocExt = swModel.Extension
 
 
        ' Get the selected objects
        selObj1 = swSelMgr.GetSelectedObject6(1, -1)
        selObj2 = swSelMgr.GetSelectedObject6(2, -1)
 
 
        Debug.Print("Compare the selected objects:")
        Select Case swApp.IsSame(selObj1, selObj2)
            Case 0
                Debug.Print("  Selected objects are not the same.")
            Case 1
                Debug.Print("  Selected objects are the same.")
            Case -1
                Debug.Print("  Unable to determine if selected objects are the same.")
        End Select
 
        Debug.Print("")
 
 
        Debug.Print("Compare the same objects:")
        Select Case swApp.IsSame(selObj1, selObj1)
            Case 0
                Debug.Print("  Selected objects are not the same.")
            Case 1
                Debug.Print("  Selected objects are the same.")
            Case -1
                Debug.Print("  Unable to determine if selected objects are the same.")
        End Select
 
        Debug.Print("")
 
        ' Get the persistent reference IDs of the 
        ' selected objects
        selObjPID1 = swModelDocExt.GetPersistReference3(selObj1)
        selObjPID2 = swModelDocExt.GetPersistReference3(selObj2)
 
 
        Debug.Print("Compare the persistent reference IDs of the selected objects:")
        Select Case swModelDocExt.IsSamePersistentID(selObjPID1, selObjPID2)
            Case 0
                Debug.Print("  Selected objects do not have the same persistent reference ID.")
            Case 1
                Debug.Print("  Selected objects do have the same persistent reference ID.")
            Case -1
                Debug.Print("  Unable to determine if the selected objects have the same persistent reference ID.")
        End Select
 
        Debug.Print("")
 
        Debug.Print("Compare the persistent reference IDs of the same objects:")
        Select Case swModelDocExt.IsSamePersistentID(selObjPID1, selObjPID1)
            Case 0
                Debug.Print("  Selected objects do not have the same persistent reference ID.")
            Case 1
                Debug.Print("  Selected objects do have the same persistent reference ID.")
            Case -1
                Debug.Print("  Unable to determine if the selected objects have the same persistent reference ID.")
        End Select
 
    End Sub
 
 
    ''' <summary>
    ''' The SldWorks swApp variable is pre-assigned for you.
    ''' </summary>
    Public swApp As SldWorks
 
End Class


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