//創(chuàng)建PPT應(yīng)用程序            
    POWERPOINT.Application objApp = new POWERPOINT.Application();
    POWERPOINT.Presentation objPresSet = null;
 
// 不顯示彈出警告等，最小化窗口應(yīng)用
    objApp.DisplayAlerts = POWERPOINT.PpAlertLevel.ppAlertsNone;
    objApp.WindowState = POWERPOINT.PpWindowState.ppWindowMinimized;
    
//打開(kāi)文件，假設(shè)模板文件名為m1.pptx
    objPresSet = objApp.Presentations.Open("m1.pptx", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoFalse);
 
//創(chuàng)建查找字典
    Dictionary<string, string> Medias = new Dictionary<string, string>();
    Medias.Add("組合6","P5_01.MP3");
    Medias.Add("組合30", "P5_02.MP3");

//遍歷所有的幻燈片對(duì)象            
for (int i = 1; i <= objPresSet.Slides.Count; i++)
{
    POWERPOINT.Slide slide = objPresSet.Slides[i];   //獲取當(dāng)前幻燈片對(duì)象
    if (slide.TimeLine.MainSequence.Count == 0) continue;  //如果該頁(yè)沒(méi)有動(dòng)畫(huà)效果則短路
    ...
}
//按提供的字典進(jìn)行查找 
foreach (string[] pros in Medias)
{
    string f_likecaption = pros[0];  //要查找的動(dòng)畫(huà)標(biāo)題
    mediafile = pros[1];             //對(duì)應(yīng)要添加的MP3文件地址
    POWERPOINT.Shape wave=null;      //初始化一個(gè)聲音變量，在PPT里也是一個(gè)Shape對(duì)象
    //遍歷該頁(yè)動(dòng)畫(huà)效果
    for (int j = 1; j <= slide.TimeLine.MainSequence.Count; j++)
    {
      POWERPOINT.Effect effect = slide.TimeLine.MainSequence[j];
       //如果查找到動(dòng)畫(huà)標(biāo)題，則添加對(duì)應(yīng)的聲音文件
      if (((effect.Shape.Name + ":" + effect.DisplayName).IndexOf(f_likecaption.Trim()) != -1
      {
         wave = slide.Shapes.AddMediaObject2(mediafile);  //添加聲音文件方法
         int  singleWaveLen = wave.MediaFormat.Length;    //記錄聲音的長(zhǎng)度
         wave.Left = 60;                                  //shape對(duì)象的位置
         wave.AnimationSettings.Animate = Microsoft.Office.Core.MsoTriState.msoTrue; //設(shè)置該對(duì)象要成為動(dòng)畫(huà)
         wave.AnimationSettings.PlaySettings.PlayOnEntry = Microsoft.Office.Core.MsoTriState.msoTrue; //設(shè)置為允許自動(dòng)播放
         wave.AnimationSettings.PlaySettings.HideWhileNotPlaying = Microsoft.Office.Core.MsoTriState.msoTrue; //設(shè)置播放期間是隱藏狀態(tài)
         wave.AnimationSettings.AdvanceMode = POWERPOINT.PpAdvanceMode.ppAdvanceOnTime;//設(shè)置與上一動(dòng)畫(huà)同時(shí)
         wave.AnimationSettings.AnimationOrder = slide.TimeLine.MainSequence.Count;
//shape對(duì)象的索引位置，默認(rèn)為最后一個(gè)，這個(gè)要根據(jù)業(yè)務(wù)邏輯進(jìn)行調(diào)整 
         break;
      }
     }//for
    ..............
}//foreach pros
//其它關(guān)鍵屬性 
POWERPOINT.Effect effect ;
effect.Timing.Duration  //返回或設(shè)置以秒為單位的動(dòng)畫(huà)長(zhǎng)度
float WaveLen = float.Parse((singleWaveLen / 1000.0).ToString()); //聲音長(zhǎng)度需要換算成秒