Hide Table of Contents

Get Edge Curve Parameterization Example (C#)

This example shows how to get curve parameterization data for a selected edge.

// Preconditions:
// 1. Open a part or assembly.
// 2. If you opened an assembly, ensure that it is
//    fully resolved.
// 3. Select an edge.
// 4. Open an Immediate Window.
// Postconditions: Inspect the Immediate window.
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Diagnostics;
namespace GetCurveParams_CSharp.csproj
partial class SolidWorksMacro

public void Main()

ModelDoc2 Part = default(ModelDoc2);

            Part = (

SelectionMgr swSelectMgr = default(SelectionMgr);
            swSelectMgr = (

Edge swEdge = default(Edge);
            swEdge = (

Curve swCurve = default(Curve);
CurveParamData swCurveParaData = default(CurveParamData);
            swCurve = (
            swCurveParaData = (

Debug.Print("The curve tag is: " + swCurveParaData.CurveTag);
Debug.Print("The curve type as defined in swCurveType_e is: " + swCurveParaData.CurveType);

double[] vEndPoint = null;
            vEndPoint = (
double[] EndPoint = new double[3];

int i = 0;

for (i = 0; i <= vEndPoint.GetUpperBound(0); i++)
                EndPoint[i] = vEndPoint[i];

Debug.Print("The end point x,y,z coordinates are: " + EndPoint[0] + "," + EndPoint[1] + "," + EndPoint[2]);

double[] vStartPoint = null;
double[] StartPoint = new double[3];
            vStartPoint = (
for (i = 0; i <= vStartPoint.GetUpperBound(0); i++)
                StartPoint[i] = vStartPoint[i];

Debug.Print("The start point x,y,z coordinates are: " + StartPoint[0] + "," + StartPoint[1] + "," + StartPoint[2]);

Debug.Print("The curve and edge are in the same direction: " + swCurveParaData.Sense);
Debug.Print("The maximum U parameter value is: " + swCurveParaData.UMaxValue);

Debug.Print("The minimum U parameter value is: " + swCurveParaData.UMinValue);

public SldWorks swApp;


Provide feedback on this topic

SOLIDWORKS welcomes your feedback concerning the presentation, accuracy, and thoroughness of the documentation. Use the form below to send your comments and suggestions about this topic directly to our documentation team. The documentation team cannot answer technical support questions. Click here for information about technical support.

* Required

Subject:   Feedback on Help Topics
Page:   Get Edge Curve Parameterization Example (C#)
*   I acknowledge I have read and I hereby accept the privacy policy under which my Personal Data will be used by Dassault Systèmes

Print Topic

Select the scope of content to print:


We have detected you are using a browser version older than Internet Explorer 7. For optimized display, we suggest upgrading your browser to Internet Explorer 7 or newer.

 Never show this message again

Web Help Content Version: API Help (English only) 2018 SP05

To disable Web help from within SOLIDWORKS and use local help instead, click Help > Use SOLIDWORKS Web Help.

To report problems encountered with the Web help interface and search, contact your local support representative. To provide feedback on individual help topics, use the “Feedback on this topic” link on the individual topic page.