How to open PowerPoint Presentation with a one button click?

select "Microsoft Office 12 Object Library" in the COM tab



using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication11
{
    public partial class Form2 : Form
    {
       
        public Form2()
        {
            InitializeComponent();
        }
       

        private void button1_Click(object sender, EventArgs e)
        {
            Microsoft.Office.Interop.PowerPoint.Application pptApp = new Microsoft.Office.Interop.PowerPoint.Application();
            Microsoft.Office.Core.MsoTriState ofalse = Microsoft.Office.Core.MsoTriState.msoFalse;
            Microsoft.Office.Core.MsoTriState otrue = Microsoft.Office.Core.MsoTriState.msoTrue;
            pptApp.Visible = otrue;
            pptApp.Activate();
            Microsoft.Office.Interop.PowerPoint.Presentations ps = pptApp.Presentations;
            Microsoft.Office.Interop.PowerPoint.Presentation p = ps.Open(@"D:\ppt\ppt1.ppt", ofalse, ofalse, otrue);
            System.Diagnostics.Debug.Print(p.Windows.Count.ToString());
            MessageBox.Show(pptApp.ActiveWindow.Caption);
        }
    }
}