c#开发Powerpoint总是出现不能注册问题

最近在开发一个c#的程序，需要利用c#窗口程序自动创建一个ppt文档，查了一些资料后写了下面的代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using PPT = Microsoft.Office.Interop.PowerPoint;
using Graph = Microsoft.Office.Interop.Graph;
using Microsoft.Office.Core;
using System.Runtime.InteropServices;
using System.IO;
using System.Reflection;

namespace CreatePPT
{
public partial class Form1 : Form
{
PPT.Application objApp = null;
PPT.Presentations objPresSet = null;
PPT.Presentation objPres;
PPT.Slides objSlides = null;
PPT._Slide objSlide = null;
PPT.Shapes objShapes = null;
PPT.Shape objShape = null;

    public Form1()
    {
        InitializeComponent();
    }

    private void CreateButton_Click(object sender, EventArgs e)
    {
        string path;
        path = @"C:\MyPPT.pptx";
        objApp = new PPT.Application();
        objPres = new PPT.Presentation();

        if(File.Exists((string)path))
        {
            File.Delete((string)path);
        }

        Object Nothing = Missing.Value;

        objApp.Presentations.Add(Microsoft.Office.Core.MsoTriState.msoFalse);
        PPT.PpSaveAsFileType format = PPT.PpSaveAsFileType.ppSaveAsDefault;

        objPres.SaveAs(path, format, Microsoft.Office.Core.MsoTriState.msoFalse);

        objPres.Close();

        objApp.Quit();

    }

}

}

但在objPres = new PPT.Presentation();
这行总是出现类不能注册的错误

An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll

Additional information: Retrieving the COM class factory for component with CLSID {91493444-5A91-11CF-8700-00AA0060263B} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

运行cmd只有，输入了regsvr32，但又出现了 “To register a module, you must provide a binary name”的错误。

到底要怎么解决呢？想法是希望在没有模板的情况下自动生成一个ppt保存到固定的目录下

regsvr32后面要跟注册的com组件的名称。
你的ppt控件是否在机器上注册了

regsvr32 "x:\path\xxx.dll"