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

namespace WebApplication1
{
    
public class RequestCounter
    {
        
private static Dictionary<string, RequestCounter> Counters = new Dictionary<string, RequestCounter>();
        
public const int MaxRequestCount = 3;
        
public const int ResetSeconds = 2;
        
public int CurrentCount { get;
            
private set; }
        
public string UserID { getset; }
        
private DateTime LastResetTime;
        
public bool AddCount()
        {
            DateTime now 
= DateTime.Now;
            
if ((now - LastResetTime).Seconds >= ResetSeconds)
            {
                
this.CurrentCount = 0;
                
this.LastResetTime = now;
            }
       this.CurrentCount++;
            if (this.CurrentCount <= MaxRequestCount)
                
return true;
            
else
                
return false;
        }
        
public static RequestCounter GetCounter(string userID)
        {
            
if (Counters.ContainsKey(userID))
                
return Counters[userID];
            
else
            {
                Counters[userID] 
= new RequestCounter();
                
return Counters[userID];
            }
        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication1
{
    
public partial class _Default : System.Web.UI.Page
    {
        
protected void Page_Load(object sender, EventArgs e)
        {
            RequestCounter counter 
= RequestCounter.GetCounter("xhan");
            
bool canAccess = counter.AddCount();

            Response.Write(canAccess);
            Response.Write(counter.CurrentCount);

        }
    }
}


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