用C#打开一个PPT并修改背景图片
//下面这句老是出问题 我不知道问题出在哪儿？ 希望能帮我解决 我要实现的功能是 通过程序打开一个PPT 然后自动修改PPT的背景图 pp.Slides.Application.ActiveWindow.Selection.SlideRange.Background.Fill.UserPicture(@"C:\Documents and Settings\Administrator\桌面\博研360.jpg");


以下是详细代码： 需要整个项目的可以加我QQ：54540387
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.Office.Interop.PowerPoint;

namespace WindowsApplication7
{
  public partial class Form1 : Form
  {
  public Form1()
  {
  InitializeComponent();
  }

  private void button1_Click(object sender, EventArgs e)
  {
  Microsoft.Office.Interop.PowerPoint.ApplicationClass pa;

  Microsoft.Office.Interop.PowerPoint.Presentation pp;


  pa = new Microsoft.Office.Interop.PowerPoint.ApplicationClass();

  pp = pa.Presentations.Open(@"G:\项目\博研\测试.ppt", Microsoft.Office.Core.MsoTriState.msoTrue, Microsoft.Office.Core.MsoTriState.msoTrue, Microsoft.Office.Core.MsoTriState.msoFalse);


  Microsoft.Office.Interop.PowerPoint.TextRange oText;
  int slideCount = pp.Slides.Count;//总的幻灯片数
  //下面这句老是出问题 我不知道问题出在哪儿？ 希望能帮我解决 我要实现的功能是 通过程序打开一个PPT 然后自动修改PPT的背景图
  pp.Slides.Application.ActiveWindow.Selection.SlideRange.Background.Fill.UserPicture(@"C:\Documents and Settings\Administrator\桌面\博研360.jpg");
   
  label1.Text = slideCount.ToString();
  pp.SaveAs(@"G:\项目\博研\测试2.ppt", Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType.ppSaveAsPowerPoint7, Microsoft.Office.Core.MsoTriState.msoTrue);

  }

  private void Form1_Load(object sender, EventArgs e)
  {

  }
  }
}

------解决方案--------------------
先要测一下pp = pa.Presentations.Open(@"G:\项目\博研\测试.ppt", 是否打开了PPT呀，要测试就要工程，可以发到supper168@gmail.com，测的试试。
------解决方案--------------------
[code=C#][/code] private void button2_Click(object sender, EventArgs e)
{
Microsoft.Office.Interop.PowerPoint.ApplicationClass pa;
Microsoft.Office.Interop.PowerPoint.Presentation pp;
pa = new Microsoft.Office.Interop.PowerPoint.ApplicationClass();
try
{

 pp = pa.Presentations.Open(@"C:\Downloads\遗传算法.ppt", Microsoft.Office.Core.MsoTriState.msoTrue, Microsoft.Office.Core.MsoTriState.msoTrue, Microsoft.Office.Core.MsoTriState.msoFalse);
pa.Activate();
pp.NewWindow();
//pp = pa.Presentations.OpenOld(@"C:\Downloads\遗传算法.ppt", Microsoft.Office.Core.MsoTriState.msoTrue, Microsoft.Office.Core.MsoTriState.msoTrue, Microsoft.Office.Core.MsoTriState.msoFalse);
int slideCount = pp.Slides.Count;//总的幻灯片数 
//pp.Slides.Application.ActiveWindow.Selection.SlideRange.Background.Fill.UserPicture(@"C:\Documents and Settings\Administrator\My Documents\My Pictures\large_2668o107.jpg");
//pp.SlideShowWindow.Application.ActiveWindow.Selection.SlideRange.Background.Fill.UserPicture(@"C:\Documents and Settings\Administrator\My Documents\My Pictures\large_2668o107.jpg");
pp.Application.ActiveWindow.Selection.SlideRange.Background.Fill.UserPicture(@"C:\Documents and Settings\Administrator\My Documents\My Pictures\large_2668o107.jpg&qu