char * pFileName="c:\\dk\\ShiXi.txt";
      CStdioFile  file;
      CString  filename;
      filename="c:\\dk\\ShiXi.txt";
      CString temp1=name;
      CString temp2=num;
      CString temp3=id;
      CString temp;

      file.Open(filename,CFile::modeReadWrite);

           while(file.ReadString(temp))
           {                       //temp里面保存的是一行的值
           
               if((temp.Find(temp1)!=-1 )&&( temp.Find(temp2)!=-1 )&&( temp.Find(temp3)!=-1))
                      {                                 
                            sprintf(buffer,"信息查找成功!!!");//消息框提示！！
                             MessageBox(buffer);
                    
                            iFiles.open("c:\\dk\\ShiXiSearch.txt",ios::trunc);//如果文件存在就清除其内容，不存在就新建                        
                            iFiles<<"name\t"<<"num\t"<<"id\t"<<"pay\t"<<"outday\t"<<"BuZhu\t"<<"money"<<'\n';
                            iFiles<<temp;     //直接把一串数据输入到文件
   
                            iFiles.close();
                        break;
                      }      
           }

while循环后if语句直接进去，if下面的语句每次都执行。把temp输出很多次
while循环后if语句直接进去，if下面的语句每次都执行。把temp输出很多次
while循环后if语句直接进去，if下面的语句每次都执行。把temp输出很多次

if语句，条件总是满足，，总是被判断为真