ASP.net封装

using System;
using System.IO;

public partial class 四则运算 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
public static int right = 0;

protected void Button1_Click(object sender, EventArgs e)
{
int n1 = int.Parse(TextBox1.Text .Trim ());

int n2 = int.Parse(TextBox3 .Text .Trim ());

Char y = Convert.ToChar(TextBox2 .Text .Trim ());

fengzhuang  con = new fengzhuang ();

con.cl(n1, n2, y);

if (con.result == int.Parse(TextBox4 .Text .Trim ()))
{

Response.Write("<script>alert('回答正确!')</script>");

right++;

}

else
{
Response.Write("<script>alert('回答错误!')</script>");

}
}
protected void Button2_Click(object sender, EventArgs e)
{
ListBox2.Items.Add(TextBox1.Text + TextBox2.Text + TextBox3.Text + Label1 .Text +TextBox4 .Text);

TextBox1.Text="";

TextBox2.Text = "";

TextBox3.Text = "";

TextBox4.Text = "";
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

/// <summary>
///fengzhuang 的摘要说明
/// </summary>
public class fengzhuang
{

//
//TODO: 在此处添加构造函数逻辑
//
public char ysf;

public int result = 0;

public void cl(int number1, int number2, char ysf)

{

if(ysf=='+')

{

result=number1+number2;

}

if (ysf == '-')

{

result=number1-number2;

}

if (ysf== '*')

{

result=number1*number2;

}

if (ysf == '/')

{

result=number1/number2;

}

}

}