Question

My DLL library code is as follows:

using System;
using IVisio=Microsoft.Office.Interop.Visio;

namespace Emix
{
public class Visio
{
    protected String path;

    public Visio(String path)
    {
        this.path = path;
    }

    public void open()
    {
        try
        {
            IVisio.Document doc = new IVisio.Application().Documents.Add(this.path);
            Console.WriteLine("Number of pages: " + doc.Pages.Count);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }
}
}

However, this code opens the Visio editor and then displays the number of pages in the document.

Is it possible to read this file content without opening the Visio?

Answer 1

If you make the application invisible, you will not see the new instance of Visio opening (there will still be a instance of Visio running, just not a visible one)

Application application = new Application();  
application.Visible = false; 
Document doc = application.Documents.Add(this.path);
Console.WriteLine("Number of pages: " + doc.Pages.Count);