//实现PPT文本查找功能

//关键代码

private void searchPPT(string[] keyWordList,string pptFileName)//在指定的ppt文档中搜索keyWord

         {

              //Microsoft powerpoint 11.0 object library这个是所添加的引用

             

             

               showMsg(lbShowMsg,"启动搜索"+pptFileName);

              //其中Presentation代表一个 PowerPoint 文档，Slide表示PowerPoint文档中的单张幻灯片

              //TextFrame是幻灯片上的文本框，TextRange是文本框中的文本。

              PowerPoint.ApplicationClass pa;

              PowerPoint.Presentation pp;

              pa=null;

              pp=null;

              try

              {

                  

                   showMsg(lbShowMsg,"尝试打开 "+pptFileName);

 

                   //打开ppt文档

                   pa=new PowerPoint.ApplicationClass();

                   pp=pa.Presentations.Open(pptFileName,

                       Microsoft.Office.Core.MsoTriState.msoTrue,

                       Microsoft.Office.Core.MsoTriState.msoTrue,Microsoft.Office.Core.MsoTriState.msoFalse);

 

                   PowerPoint.TextRange oText;

                   //总的幻灯片数

                   int slideCount=pp.Slides.Count;

                   //对每张幻灯片

                   foreach(PowerPoint.Slide slide in pp.Slides)

                   {

                      

              showMsg(lbShowMsg,"正在搜索"+pptFileName+" 幻灯片"+slide.SlideNumber.ToString()+"/"+slideCount);

                       //对所有的元素

                       foreach(PowerPoint.Shape shape in slide.Shapes)

                       {

                      //如果此幻灯片中有文本框

                     if(shape.HasTextFrame==Microsoft.Office.Core.MsoTriState.msoTrue)

                            {

                                 //对每组关键字

                                 foreach(string keyWord in keyWordList)

                                 {

                                     oText=null;

                                     oText=shape.TextFrame.TextRange.Find

 

                      (keyWord,0,Microsoft.Office.Core.MsoTriState.msoFalse,Microsoft.Office.Core.MsoTriState.msoTrue);

                                     if (oText!=null)

                                     {

                                    

                                          string temp=pptFileName.Remove(0,pptFileName.LastIndexOf("\\")+1);

                                          string name=temp.Remove(temp.LastIndexOf("."),4);

                                          int index=slide.SlideNumber;

                                          //添加到搜索结果中

                                          lbResult.Items.Add(name+" 幻灯片"+index.ToString()+"/"+slideCount);

                                          lbResult.Update();

                                          resultText.Add(shape.TextFrame.TextRange.Text);

                                          continue;

                                     }

                                 }

                            }

                       }

                   }

             

              }

        

              catch

              {

              }

              finally

              {

               //释放资源

                   if(pp!=null)

                   {

                       System.Runtime.InteropServices.Marshal.ReleaseComObject(pp);

                       pp=null;

                   }

                   if(pa!=null)

                   {

                       System.Runtime.InteropServices.Marshal.ReleaseComObject(pa);

                       pa=null;

                   }

             

                  

              }
         }