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Automatically Solve Equations in Sequence (VB.NET)

This example shows how to automatically sequence the equations in an order determined by SolidWorks to produce accurate results.

' Preconditions:
' 1. Model document specified to open exists.
' 2. Open the Immediate window.
' Postconditions:
' 1. The equation's Automatic solve order option
'    is set to true, which results in the model's
'    independent equations executing before
'    dependent equations, if any.
' 2. Examine the Immediate window to verify.
NOTE: Because this model is used elsewhere,
' do save any changes when closing it.
Imports SolidWorks.Interop.sldworks
Imports SolidWorks.Interop.swconst
Imports System.Runtime.InteropServices
Imports System
Imports System.Diagnostics
Partial Class SolidWorksMacro
    Public Sub Main()
        Dim swModel As ModelDoc2
        Dim swEquationMgr As EquationMgr
        Dim fileName As String
        Dim errors As Integer, warnings As Integer
        fileName = "C:\Program Files\SolidWorks Corp\SolidWorks\samples\tutorial\api\partEquations.sldprt"
        swModel = swApp.OpenDoc6(fileName, swDocumentTypes_e.swDocPART, swOpenDocOptions_e.swOpenDocOptions_Silent, "", errors, warnings)
        swEquationMgr = swModel.GetEquationMgr
        'Make sure that this model includes equations
        'by getting the number of equations
        Debug.Print("Number of equations: " & swEquationMgr.GetCount)
        If swEquationMgr.GetCount >= 1 Then
            'Get whether equations are automatically
            'solved in sequence
            Debug.Print("  Are equations automatically solved in sequence? " & swEquationMgr.AutomaticSolveOrder)
            If swEquationMgr.AutomaticSolveOrder Then
                Exit Sub
                'Automatically solve equations in sequence
                swEquationMgr.AutomaticSolveOrder = True
                Debug.Print("  Are equations automatically solved in sequence? " & swEquationMgr.AutomaticSolveOrder)
            End If
            Debug.Print("No equations included with this model.")
        End If
    End Sub
    ''' <summary>
    ''' The SldWorks swApp variable is pre-assigned for you.
    ''' </summary>
    Public swApp As SldWorks
End Class

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