this is pradeep, i m vb.net learner,my English not good dont mind
what i need is i what to get all information within the parenthesis of Sin().
for example , i have created one one textbox in my user interface.
i wanted users to enter some trigonometric expresiions like " sin(90+(25+25))"
for that i what all the information present with in the parenthesis of sin()
can anyone give the code to help me
thanks in advance