求连续数字的和------------------------------用while的算法思想

时间：2020-11-27 15:58:00

前端代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

    <h2>求连续数字的和</h2>

    <hr/>

    输入的起始数值：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

    <br/>

    输入的结束数值：<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

    <br/>

        <asp:Button ID="Button" runat="server" Text="求和" onclick="Button_Click" />

        <br/>

        <asp:Label ID="Label1" runat="server" Text=""></asp:Label>

    </div>

    </form>

</body>

</html>

　　后端代码：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    protected void Button_Click(object sender, EventArgs e)

    {

        int InStart=0;

        int InEnd = 0;

        int Sum =0;

        InStart = int.Parse(TextBox1.Text);

        InEnd = int.Parse(TextBox2.Text);

      while(InStart<=InEnd)

      {

      Sum +=InStart;

          InStart++;

      }

      Label1.Text = Sum.ToString();

    }

}

　　

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