VB.Net- Evaluating Mathematical Expression in a String

问题

Is there a method that allows me to evaluate a mathematical expression in a string? Example (Not actual Code):

Input = "2+2"

Output = SomeMethod(Input)

Output = 4

Update: Nevermind, I found a way around it by using DataTable.Compute.

回答1:

You'll need a math expression parser to handle this.

Here are some various open source options on CodePlex:

• Simple Math Parser
• Fast Lightweight Expression Evaluator
• ILCalc

A search will find many others...

来源：https://stackoverflow.com/questions/6604840/vb-net-evaluating-mathematical-expression-in-a-string