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Insert and Change DeleteFace Feature Example (C#)

This example shows how to insert a DeleteFace feature and how to modify that feature.

// ---------------------------------------------------------------------------
// Preconditions:
// 1. Open public_documents\samples\tutorial\fillets\knob.sldprt.
// 2. Open the Immediate window.
// Postconditions:
// 1. Creates and modifies a DeleteFace feature.
// 2. Examine the Immediate window.
// NOTE: Because this part document is used elsewhere, do not save changes.
// ---------------------------------------------------------------------------

using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Diagnostics;
namespace DeleteFaceFeatureDataCSharp.csproj
    public partial class SolidWorksMacro
        public void Main()

        ModelDoc2 swModel = default(ModelDoc2);
        ModelDocExtension swModelDocExt = default(ModelDocExtension);
        Feature swFeature = default(Feature);
        DeleteFaceFeatureData swDeleteFaceFeature = default(DeleteFaceFeatureData);
        string featureName = null;
        bool boolstatus = false;
        int opt = 0;

        swModel = (ModelDoc2)swApp.ActiveDoc;
        swModelDocExt = (ModelDocExtension)swModel.Extension;


        // Select a face for the
        // DeleteFace feature
        boolstatus = swModel.Extension.SelectByID2("", "FACE", 0.002251015125069, -0.001872569429423, 0.02015405789763, false, 0, null, 0);

        // Create a DeleteFace feature
        boolstatus = swModelDocExt.InsertDeleteFace((int)swFaceDeleteOption_e.swFaceDelete_Default);        

        // Get the DeleteFace feature
        swFeature = (Feature)swModel.FirstFeature();
        while ((swFeature != null)) {
            featureName = swFeature.Name;              

            while (featureName != "DeleteFace1") {
                swFeature = (Feature)swFeature.GetNextFeature();
                featureName = swFeature.Name;

            Debug.Print("Feature name: " + featureName);
            swDeleteFaceFeature = (DeleteFaceFeatureData)swFeature.GetDefinition();
            boolstatus = swDeleteFaceFeature.AccessSelections(swModel, null);
            Debug.Print(" Number of deleted faces: " + swDeleteFaceFeature.GetDeletedFacesCount());

            // Get the DeleteFace feature's option
            opt = swDeleteFaceFeature.Options;
            Debug.Print(" Before changing the option...");


            // Change the DeleteFace feature's option
            swDeleteFaceFeature.Options = (int)swFaceDeleteOption_e.swFaceDelete_Patch;
            opt = swDeleteFaceFeature.Options;
            Debug.Print(" After changing the option...");


            // Save modification made to DeleteFace feature
            boolstatus = swFeature.ModifyDefinition(swDeleteFaceFeature, swModel, null);


            // Get next feature until no more features
            swFeature = (Feature)swFeature.GetNextFeature();



    public void DeleteFaceOptions(long options)
        switch (options) {
            case 0:
                Debug.Print("  Option = swFaceDelete_Default");
            case 1:
                Debug.Print("  Option = swFaceDelete_Patch");
            case 2:
                Debug.Print("  Option = swFaceDelete_Fill");
            case 3:
                Debug.Print("  Option = swFaceDelete_FillWithTangent");


        /// <summary>
        ///  The SldWorks swApp variable is pre-assigned for you.
        /// </summary>
        public SldWorks swApp;





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