我想创建一个简单的按钮,每次点击时都会交换字符串值。这是我的aspx和aspx.cs文件。 .aspx的:每次点击交换值按钮
<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeFile="switch.aspx.cs" Inherits="_Default" %>
<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server">
<div class="col-md-offset-2 col-md-10">
<asp:Button runat="server" OnClick="Switch" Text="Switch" CssClass="btn btn-default" />
</div>
Translator From :<asp:Label runat="server" ID="testing"></asp:Label>
Translator To :<asp:Label runat="server" ID="testing1"></asp:Label>
</asp:Content>
aspx.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
using System.Net;
using System.IO;
using System.Runtime.Serialization;
public partial class _Default : Page
{
public void SwapStrings(ref string s1, ref string s2)
// The string parameter is passed by reference.
// Any changes on parameters will affect the original variables.
{
string temp = s1;
s1 = s2;
s2 = temp;
System.Console.WriteLine("Inside the method: {0} {1}", s1, s2);
testing.Text = s1;
testing1.Text = s2;
}
public void Switch(object sender, EventArgs e)
{
string str1 = "en";
string str2 = "ja";
System.Console.WriteLine("Inside Main, before swapping: {0} {1}", str1, str2);
SwapStrings(ref str1, ref str2);
}
}
所有我想要做的就是每次我按一下按钮,在 “从” 和 “到” 交换价值。但是现在的代码只对第一次点击有影响。我认为代码必须有某种内存才能保存最后的值。任何人都可以帮助代码吗?
嗨,谢谢你的快速回复。那么初始值呢?我想从=“en”的第一个值到=“ja”。然后每次点击交换按钮 –
只需在aspx文件中直接设置这些默认值:' en' –
musefan