To search the occurrence of a word in a pdf file.

Question

Hi,

I'm working on desktop application which is a pdf viewer. I'm trying ot find the occurrence of a word and highlight it. I'm able to find the word and highlight.

The problem is finding the next or previous occurrence of a word. I'm not able to implement it in the usual / standard way. The way I have imlpemented, it worls some times and doesn't work sometime.

I need help in developing the logic for this.

Any suggestion is appreciated