[sathishsuya]

Hi,

I have calulator while pressing the calculator buttons that corrsponding caption will display in text box
ex:(12 + 2+ (text1) - sum1+[Ref1]/[ref2])

1. how to remove [i have button for remove] string upto previous oprator
2. ex now if i cliked the remove button ex :(12 + 2+ (text1) - sum1+[Ref1]/ should be like this
3. again i clicked it should be like this ex :(12 + 2+ (text1) - sum1+

Please give the sample code for this

Regards
Sathish

This post has been edited by sathishsuya: 25 May 2009 - 04:58 AM

[noorahmad]

[mark.bottomley]

you are supposed to show an attempt at what you are trying to do - we don't like to do the work for you - especially your homework. Try looking at String.LastIndexOf("<your operator>") where <your operator is looped over the set of +, /, *, - and find the largest index to use in a .SubString expression. Watch out for the problem of "a - b" and "a + -b"