Insert and Save Virtual Assembly Example (C#)

//-----------------------------------------------------------------------------
// Preconditions:
// 1. Open an assembly document.
// 2. Rename the namespace of this macro to match your C# project's name.
// 3. Open an Immediate Window.
// 4. Run this macro.
//
// Postconditions:
// 1. Tools > Options > System Options > Assemblies >

//    Save new components to external files is selected,

//    and InsertNewAssembly is called, passing in FileName

//    to save the sub-assembly:
//    a. MyTestValveAssembly<1> displays in the FeatureManager design tree.
//    b. MyTestValveAssembly.sldasm is saved in the assembly's directory.
// 2. Next, Tools > Options > System Options > Assemblies >

//    Save new components to external files is de-selected,

//    and InsertNewAssembly is called, passing in FileName

//    to save the sub-assembly.
//    a. A virtual sub-assembly displays in the FeatureManager design tree.
//    b. The FileName parameter is ignored, and the virtual sub-assembly

//       is not saved.
// 3. The Immediate Window displays the error codes

//    as defined in swInsertNewAssemblyErrorCode_e.
//------------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Diagnostics;

namespace InsertNewAssembly_CSharp.csproj
{
    partial class SolidWorksMacro
    {

        ModelDoc2 swModel;
        AssemblyDoc swAssy;
        string tmpPath;

        public void Main()
        {

            // Turn on Tools > Options > System Options > Assemblies > Save new components to external files
            swApp.SetUserPreferenceToggle((int)swUserPreferenceToggle_e.swSaveNewComponentsToExternalFile, true);

            swModel = (ModelDoc2)swApp.ActiveDoc;
            string strCompModelname = null;
            strCompModelname = "MyTestValveAssembly.sldasm";

            // Save the new sub-assembly to the same folder where the parent assembly resides
            tmpPath = swModel.GetPathName();
            string[] tok;
            tok = tmpPath.Split('\\');

            // reconstruct the assembly path without the file name
            int i;
            string virAssPath = "";
            for (i = 0; i < tok.Length - 1; i++)
            {
                virAssPath = virAssPath + tok[i] + "\\";
            }

            Debug.Print(virAssPath);
            swAssy = (AssemblyDoc)swModel;

            // Create a virtual sub-assembly and print the error code as defined in swInsertNewAssemblyErrorCode_e
            Debug.Print("First virtual sub-assembly created and saved? " + swAssy.InsertNewAssembly(virAssPath + strCompModelname));

            // Turn off Tools > Options > System Options > Assemblies > Save new components to external files
            swApp.SetUserPreferenceToggle((int)swUserPreferenceToggle_e.swSaveNewComponentsToExternalFile, false);

            // Create another virtual sub-assembly and print the error code as defined in swInsertNewAssemblyErrorCode_e
            Debug.Print("Second virtual sub-assembly created but not saved? " + swAssy.InsertNewAssembly(virAssPath + strCompModelname));
        }


        public SldWorks swApp;


    }
}