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Asked: 2026-06-02T01:40:25+00:00

Hello, how do you assign names through a browser. Picture this, your trying to

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Hello, how do you assign names through a browser.

Picture this, your trying to sign up a name on a browser text box in order to join the game with your name saved in your browser as a cookie. There is possible of multiple players that can sign their names, but the game is only two players. How can I set player name that goes to my website, types in his name in a text box that gets saved into a cookies, and then he presses a join button to beings to send requests to the host to look for another player for a game.

My question would be since the player is two player, tic tac toe actually, after I have set their chosen names to a variable string, how can I assign their name to the physical player 1 and player 2 in the game, since one player goes first and one player goes second.

I though of who ever began sending requests to find another player becomes the first player (X), so who ever answers that request, responds to be the second player, the O player. Is that possible to do?

I’m running Visual Studios ’08, using ASP.NET website forms. So generally using text boxes, buttons, MapPathing Stream Reader for data, and cookies.

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1 Answer

  1. Editorial Team

    This is a lot to look over, but should give you a very good starting point:

    ASPX:

    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="MultipleUsers.aspx.cs" Inherits="WebApplicationCS2.MultipleUsers" %>

<!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>
        <asp:ScriptManager runat="server" ID="ScriptManager1"></asp:ScriptManager>
        <div style="float:left; border:1px solid gray; min-height:200px; width:40%;">
            <asp:Timer runat="server" ID="tmrUsersList" Interval="1000"></asp:Timer>
            <asp:UpdatePanel runat="server" ID="pnlAjaxUserList">
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="tmrUsersList" />
                </Triggers>
                <ContentTemplate>
                    <table style="width:100%;">
                        <asp:Repeater runat="server" ID="rptUsersList">
                            <ItemTemplate>
                                <tr>
                                    <td>
                                        <asp:Label runat="server" ID="lblUserName" Text='<%# Eval("UserName")%>' />
                                    </td>
                                    <td>
                                        <asp:LinkButton runat="server" ID="lnkChallenge" Enabled='<%# Eval("CanChallenge")%>' 
                                            Text="Challenge" CommandArgument='<%# Eval("UserName")%>'
                                            OnCommand="lnkChallenge_Command" />
                                    </td>
                                </tr>
                            </ItemTemplate>
                        </asp:Repeater>
                    </table>
                </ContentTemplate>
            </asp:UpdatePanel>
        </div>
        <div style="float:left;">
            Choose username:
            <asp:TextBox runat="server" ID="txtChosenName"></asp:TextBox>
            <asp:Button runat="server" ID="btnSignin" Text="Sign In" 
                OnClick="btnSignin_Click" />
            <br />
            <asp:Label runat="server" ID="lblMessage" ForeColor="Red" Visible="false" EnableViewState="false"></asp:Label>
        </div>
    </div>
    </form>
</body>
</html>

    Code-behind:

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

namespace WebApplicationCS2
{
    public partial class MultipleUsers : System.Web.UI.Page
    {
        private const string UserNameKey = "SitePlayer_UserName";
        private string CurrentUserName;
        private List<GameUser> lGameUsers;

        protected void Page_Load(object sender, EventArgs e)
        {
            HttpCookie playerCookie = Request.Cookies[UserNameKey];
            CurrentUserName = (playerCookie != null ? playerCookie.Value : null);
            if (CurrentUserName != null)
            {
                // Update cache to indicate user is still online.
                Cache.Add(UserNameKey + CurrentUserName, CurrentUserName, null,
                          System.Web.Caching.Cache.NoAbsoluteExpiration,
                          TimeSpan.FromMinutes(1), System.Web.Caching.CacheItemPriority.Normal, null);
            }

            lGameUsers = GetUserList();
            rptUsersList.DataSource = lGameUsers;
            rptUsersList.DataBind();
        }

        protected void btnSignin_Click(object sender, EventArgs e)
        {
            string chosenName = txtChosenName.Text.Trim();
            foreach (GameUser u in lGameUsers)
            {
                if (string.Compare(chosenName, u.UserName, StringComparison.OrdinalIgnoreCase) == 0)
                {
                    lblMessage.Text = "Username already in use.";
                    lblMessage.Visible = true;
                    return;
                }
            }
            Cache.Add(UserNameKey + chosenName, chosenName, null,
                      System.Web.Caching.Cache.NoAbsoluteExpiration, 
                      TimeSpan.FromMinutes(1), System.Web.Caching.CacheItemPriority.Normal, null);
            Response.AppendCookie(new HttpCookie(UserNameKey, chosenName));
        }

        protected void lnkChallenge_Command(object sender, CommandEventArgs e)
        {

        }

        class GameUser
        {
            public string UserName { get; set; }
            public bool CanChallenge { get; set; }
        }
        private List<GameUser> GetUserList()
        {
            List<GameUser> userList = new List<GameUser>();
            foreach (System.Collections.DictionaryEntry cacheItem in Cache)
            {
                if (cacheItem.Key.ToString().StartsWith(UserNameKey))
                {
                    string name = cacheItem.Value.ToString();
                    if (string.Compare(CurrentUserName, name, StringComparison.OrdinalIgnoreCase) != 0)
                    {
                        GameUser u = new GameUser() 
                        {
                            UserName = name,
                            CanChallenge = (CurrentUserName != null)
                        };
                        userList.Add(u);
                    }
                }
            }
            return userList;
        }
    }
}

    To see the code in action, run the website, browse to the form, and sign in, using two different browsers.

    Steps that remain for you to do are things like validating a user only signs in once, wiring up the Challenge link button, etc.

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