Interop word: How to search in a range for one result per Execute()?

[tommeal]

I use Find.Execute() method to search some keyword in the following text in a word document.

a b c d e f 1, a b c d e f 2, a b c d e f 3.

and the search keyword is "a", I want the Execute() return when it finds the first "a". Then in the next Execute() it returns second "a", and in the third Execute() it returns the third "a".

The parameters for Find.Execute() are: MatchWholeWord, (search) Forward, wdFindStop for Wrap.

However after running the Execute() once, it will search whole text and return 3 "a". What should I do to enable the Execute() method return immediately when it finds the first "a", and in next Execute() it returns second "a"?

Thanks for help!