search Application no in pdf file

 

using Acrobat;
using AFORMAUTLib;							
private void pdfRandD(string fPath)
        {
            AcroPDDocClass objPages = new AcroPDDocClass();
            objPages.Open(fPath);
            long TotalPDFPages = objPages.GetNumPages();            
            objPages.Close();
            AcroAVDocClass avDoc = new AcroAVDocClass();
            avDoc.Open(fPath, "Title");
            IAFormApp formApp = new AFormAppClass();
            IFields myFields = (IFields)formApp.Fields;            
            string searchWord = "Search String";
            string k = "";
            StreamWriter sw = new StreamWriter(@"D:\KCG_FileChecker_Inputs\MAC\pdf\0230_525490_23_cha17.txt", false);
            for (int p = 0; p < TotalPDFPages; p++)
            {                
                int numWords = int.Parse(myFields.ExecuteThisJavascript("event.value=this.getPageNumWords(" + p + ");"));
                k = "";
                for (int i = 0; i < numWords; i++)
                {
                    string chkWord = myFields.ExecuteThisJavascript("event.value=this.getPageNthWord(" + p + "," + i + ", true);");
                    k = k + " " + chkWord;
                }                
                if(k.Trim().Contains(searchWord))
                {
                    int pNum = int.Parse(myFields.ExecuteThisJavascript("event.value=this.getPageLabel(" + p + ",true);"));
                    sw.WriteLine("The Word " + searchWord + " is exists in " + pNum);                    
                }
            }
            sw.Close();
            MessageBox.Show("Process completed");
        }