Function Evaluate2( _
   ByVal Parameter As System.Double, _
   ByVal NumberOfDerivatives As System.Integer _
) As System.Object

Dim instance As IEdge
Dim Parameter As System.Double
Dim NumberOfDerivatives As System.Integer
Dim value As System.Object
 
value = instance.Evaluate2(Parameter, NumberOfDerivatives)

System.object Evaluate2( 
   System.double Parameter,
   System.int NumberOfDerivatives
)

System.Object^ Evaluate2( 
&   System.double Parameter,
&   System.int NumberOfDerivatives
) 

Parameters

Parameter

Curve parameter U value (see Remarks)

NumberOfDerivatives

Number of derivatives (see Remarks)

Return Value

1. Open a part in SOLIDWORKS.
2. Open an Immediate window.
3. Select an edge.
4. Run this VBA macro:

=========================================================

Option Explicit

Dim swApp As SldWorks.SldWorks
Dim Part As SldWorks.ModelDoc2
Dim boolstatus As BooleanDim longstatus As Long, longwarnings As Long

Type DoubleRec   
     dValue As Double '64 bits, 8 bytes
End Type

Type Int2Rec 
     iLower As Long '4 bytes 
     iUpper As Long '4 bytes
End Type

' Unpack the status double
Function DoubleToLong(ByVal dVal As Double) As Long 
    Dim dr As DoubleRec 
    Dim i2r As Int2Rec 
    ' Set the double value 
    dr.dValue = dVal 
    ' Copy the values 
    LSet i2r = dr 
    ' Extract the status value 
    DoubleToLong = i2r.iLower
End Function

Sub main()

    Dim status As Long
    Set swApp = Application.SldWorks  
    Set Part = swApp.ActiveDoc 
    Dim myModelView As SldWorks.ModelView
    Set myModelView = Part.ActiveView 
    myModelView.FrameState = swWindowState_e.swWindowMaximized   
    Dim swSelectMgr As SldWorks.SelectionMgr
    Set swSelectMgr = Part.SelectionManager 
    Dim swEdge As SldWorks.Edge
    Set swEdge = swSelectMgr.GetSelectedObject6(1, -1)  
    Dim swCurve As SldWorks.Curve 
    Dim swCurveParamData As SldWorks.CurveParamData 
    Set swCurve = swEdge.GetCurve 
    Set swCurveParamData = swEdge.GetCurveParams3  
    Debug.Print "The maximum U parameter value is: " & swCurveParaData.UMaxValue 
    Debug.Print "The minimum U parameter value is: " & swCurveParaData.UMinValue  
    Dim pt As Variant 
    pt = swEdge.Evaluate2(swCurveParaData.UMaxValue, 0) 
    status = DoubleToLong(pt(UBound(pt))) 
    If status Then   
        Debug.Print " The evaluated point at UMax is:   = " & pt(0) & ", " & pt(1) & ", " & pt(2) 
    Else   
        Debug.Print "***** Error!" 
    End If

End Sub
====================================================================

Use IEdge::GetCurveParams3 to determine the valid range of U parameter values for Parameter.

The returned array contains ((NumberOfDerivatives + 1) * 3) + 1 doubles:

[evaluated_point], [evaluated_derivative_1],...[evaluated_derivative_NumberOfDerivatives, [status_code]

where status_code is a packed double. After unpacking status_code into two longs, the lower long value is 1 for success or 0 for error. See the Example. 

For a curve of type swCurveTypes_e::TRIMMED_TYPE, the number of derivatives is determined by the base curve as obtained from ICurve::GetBaseCurve.