计算算式字符串的

 

 

using System;

using System.Data;

using System.Windows.Forms;



namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            DataTable dt = new DataTable();



            Text = dt.Compute(textBox1.Text, "").ToString();

        }

    }

}

http://blog.csdn.net/qzyf1992/article/details/8967996