Edit Macro in Word using C#. For details: https://kb.aspose.com/words/net/edit-macro-in-word-using-csharp/

Edit Macro in Word using C#.cs

using System;
using Aspose.Words;
using Aspose.Words.Vba;

namespace AsposeWordsVbaDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            Document docm = new Document("CreateVbaProject.docm");
            VbaProject project = docm.VbaProject;

            const string newSourceCode =
 @"Sub HelloAspose()
    MsgBox ""Hello! The VBA code is modified!""
End Sub";
            project.Modules[1].SourceCode = newSourceCode;
            docm.Save("updated.docm");
            Console.WriteLine("Macro code modified.");
        }
    }
}