I know how to read user input using textbox but it only can read character and numbers. Is it possible that I want to read user input equation???
Example:
User type A+B
User put range of A and B.
1.25<A< 3.56
2.45<B< 9.87

I failed to read the equation using textbox. Is it there are other ways that can use to read equation input A+B???
I am using VS2005 and VB.Net. I really new in this programming using VB.Net.