C# read word document and get specific data from document

  // Reding all word document from a specific folder  
       foreach (string file in Directory.EnumerateFiles(@"D:\", "*.doc"))  
       {  
         //string contents = File.ReadAllText(file);  
         Microsoft.Office.Interop.Word.Application word = new Microsoft.Office.Interop.Word.Application();  
         object miss = System.Reflection.Missing.Value;  
         object path = file; // @"D:\35339.doc";  
         object readOnly = true;  
         Microsoft.Office.Interop.Word.Document docs = word.Documents.Open(ref path, ref miss, ref readOnly, ref miss, ref miss, ref miss, ref miss, ref miss, ref miss, ref miss, ref miss, ref miss, ref miss, ref miss, ref miss, ref miss);  
         string totaltext = "";  
         for (int i = 0; i < 2; i++) // i set value 2 you can change  
         {  
           totaltext += " \r\n " + docs.Paragraphs[i + 1].Range.Text.ToString();  
         }  
         // Getting data after specific data from the string  
         string _findName = "Name :";  
         string code = totaltext.Substring((totaltext.IndexOf(_findName) + _findName.Length), 20);  
         string _findMrno = "MR. No.      :";  
         string mrNo = totaltext.Substring((totaltext.IndexOf(_findMrno) + _findMrno.Length), 12);  
         string _findAge = "Age     :";  
         string age = totaltext.Substring((totaltext.IndexOf(_findAge) + _findAge.Length), 6);  
         string _findDate = " Date           :";  
         string date = totaltext.Substring((totaltext.IndexOf(_findDate) + _findDate.Length));  
         // You code for insert or other things to do  
         docs.Close();  
         word.Quit();  
       }