default2.aspx.cs

大家一起研究研究,全部都是开源的CSHARP代码.带数据库的

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        object objectHelper = new object();
        lock (objectHelper)
        {
            if (Application["percount"] == null)
            {
                CreateApplication();
            }
            else
            {
                bool isIn = false;
                DataTable dt = (DataTable)Application["percount"];
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    if (GetIP() == dt.Rows[i]["perIp"].ToString())
                        isIn = true;
                }
                if (!isIn)
                {

                }
            }
        }
    }

    protected void CreateApplication()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("perIp");
        DataRow dr = dt.NewRow();
        dr["perIp"] = GetIP();
        dt.Rows.Add(dr);
        Application["percount"] = dt;
    }

    protected string GetIP()
    {


        string result = String.Empty;

        result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
        if (null == result || result == String.Empty)
        {
            result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
        }

        if (null == result || result == String.Empty)
        {
            result = HttpContext.Current.Request.UserHostAddress;
        }

        return result;

    }

    protected void CountApplication(char operation)
    {
        switch (operation)
        {
            case '+':
                Application["percount"] = Convert.ToInt32(Application["percount"]) + 1;
                break;
            case '-':
                Application["percount"] = Convert.ToInt32(Application["percount"]) - 1;
                break;
        }
    }
}