获取用户登录次数（cookie）代码,Asp.Net代码库,德仔网

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【Asp.Net】获取用户登录次数（cookie）
作者:Dezai.CN / 发布于2012/7/26/ 630
获取用户登录次数登录的时候先取cookie,取到就加1.然后保存
<div>
<div class="container">
<div class="line number1 index0 alt2">"c# keyword">if "c# plain">(Request.Cookies["c# string">"loginCount""c# plain">] == "c# keyword">null"c# plain">)</div>
<div class="line number2 index1 alt1">"c# plain">{</div>
<div class="line number3 index2 alt2">"c# plain">HttpCookie c= "c# keyword">new "c# plain">HttpCookie("c# string">"loginCount""c# plain">); ;</div>
<div class="line number4 index3 alt1">"c# plain">Response.Cookies["c# string">"loginCount""c# plain">].Value = "c# string">"1""c# plain">;</div>
<div class="line number5 index4 alt2">"c# plain">Response.Cookies["c# string">"loginCount""c# plain">].Expires = DateTime.Now.AddDays(1);</div>
<div class="line number6 index5 alt1">"c# plain">Response.Cookies.Add(c);</div>
<div class="line number7 index6 alt2">"c# plain">}</div>
<div class="line number8 index7 alt1">"c# keyword">else</div>
<div class="line number9 index8 alt2">"c# plain">{</div>
<div class="line number10 index9 alt1">"c# keyword">int "c# plain">count = Convert.ToInt32(Request.Cookies["c# string">"loginCount""c# plain">].Value) + 1;</div>
<div class="line number11 index10 alt2">"c# plain">Response.Cookies["c# string">"loginCount""c# plain">].Value = count.ToString();</div>
<div class="line number12 index11 alt1">"c# plain">}</div>
<div class="line number12 index11 alt1"></div>
<div class="line number12 index11 alt1"></div>
<div class="line number12 index11 alt1"></div>
<div class="line number12 index11 alt1"></div>
<div class="line number12 index11 alt1">"c# plain">
<div class="container">
<div class="line number1 index0 alt2">"c# keyword">if "c# plain">(Request.Cookies["c# string">"userCookie""c# plain">] == "c# keyword">null"c# plain">)</div>
<div class="line number2 index1 alt1">"c# plain">{</div>
<div class="line number3 index2 alt2">"c# plain">HttpCookie userCookie = "c# keyword">new "c# plain">HttpCookie("c# string">"userCookie""c# plain">);</div>
<div class="line number4 index3 alt1">"c# plain">userCookie.Values["c# string">"userName""c# plain">] = userInfo.UserName.ToString();</div>
<div class="line number5 index4 alt2">"c# plain">userCookie.Values["c# string">"lastVist""c# plain">] = DateTime.Now.ToString();</div>
<div class="line number6 index5 alt1">"c# plain">userCookie.Values["c# string">"count""c# plain">] = "c# string">"1""c# plain">;</div>
<div class="line number7 index6 alt2">"c# plain">userCookie.Expires = DateTime.Now.AddDays(30);</div>
<div class="line number8 index7 alt1">"c# plain">Response.Cookies.Add(userCookie);</div>
<div class="line number9 index8 alt2">"c# plain">}</div>
<div class="line number10 index9 alt1">"c# keyword">else</div>
<div class="line number11 index10 alt2">"c# plain">{</div>
<div class="line number12 index11 alt1">"c# keyword">int "c# plain">counter = Convert.ToInt32(Request.Cookies["c# string">"userCookie""c# plain">]["c# string">"count""c# plain">]) + 1;</div>
<div class="line number13 index12 alt2">"c# plain">HttpCookie userCookie = "c# keyword">new "c# plain">HttpCookie("c# string">"userCookie""c# plain">);</div>
<div class="line number14 index13 alt1">"c# plain">userCookie.Values["c# string">"userName""c# plain">] = userInfo.UserName.ToString();</div>
<div class="line number15 index14 alt2">"c# plain">userCookie.Values["c# string">"lastVist""c# plain">] = DateTime.Now.ToString();</div>
<div class="line number16 index15 alt1">"c# plain">userCookie.Values["c# string">"count""c# plain">] = counter.ToString();</div>
<div class="line number17 index16 alt2">"c# plain">userCookie.Expires = DateTime.Now.AddDays(30);</div>
<div class="line number18 index17 alt1">"c# plain">Response.Cookies.Add(userCookie);</div>
<div class="line number19 index18 alt2">"c# plain">}</div>
<div class="line number20 index19 alt1">"c# plain">在另一个页面取出来</div>
<div class="line number21 index20 alt2">"c# comments">//读取Cookie</div>
<div class="line number22 index21 alt1">"c# keyword">string "c# plain">nameCookie = Request.Cookies["c# string">"userCookie""c# plain">]["c# string">"userName""c# plain">];</div>
<div class="line number23 index22 alt2">"c# plain">Response.Write("c# string">"用户名：" "c# plain">+ nameCookie);</div>
<div class="line number24 index23 alt1">"c# keyword">string "c# plain">timeCookie = Request.Cookies["c# string">"userCookie""c# plain">]["c# string">"lastVist""c# plain">];</div>
<div class="line number25 index24 alt2">"c# plain">Response.Write("c# string">" 上传访问时间：" "c# plain">+ timeCookie);</div>
<div class="line number26 index25 alt1">"c# keyword">string "c# plain">countCookie = Request.Cookies["c# string">"userCookie""c# plain">]["c# string">"count""c# plain">];</div>
<div class="line number27 index26 alt2">"c# plain">Response.Write("c# string">" 访问次数：" "c# plain">+ countCookie);</div>
</div>
</div>
<div class="line number12 index11 alt1"></div>
<div class="line number12 index11 alt1"></div>
<div class="line number12 index11 alt1"></div>
<div class="line number12 index11 alt1"></div>
<div class="line number12 index11 alt1">"c# plain">
<span style="color: rgb(0, 0, 0);">防止同一账户重复登录</span>

<span style="color: rgb(0, 0, 0);">放在登陆成功的地方：
</span><span style="color: rgb(0, 0, 255);">string</span><span style="color: rgb(0, 0, 0);"> key </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> TextBox1.Text; </span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">用户名文本框设为cache关键字 </span><span style="color: rgb(0, 128, 0);">
</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(0, 0, 255);">string</span><span style="color: rgb(0, 0, 0);"> uer </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> Convert.ToString(Cache[key]); </span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">读取cache中用户相应的值
</span><span style="color: rgb(0, 0, 255);">if</span><span style="color: rgb(0, 0, 0);"> (uer </span><span style="color: rgb(0, 0, 0);">==</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(0, 0, 255);">null</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(0, 0, 0);">||</span><span style="color: rgb(0, 0, 0);"> uer </span><span style="color: rgb(0, 0, 0);">==</span><span style="color: rgb(0, 0, 0);"> String.Empty)<span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">判断cache中是否有用户的信息，如果没有相关的值，说明用户未登陆</span>
{　
</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">定义cache过期时间　</span><span style="color: rgb(0, 128, 0);">
</span><span style="color: rgb(0, 0, 0);">  TimeSpan SessTimeout </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> </span><span style="color: rgb(0, 0, 255);">new</span><span style="color: rgb(0, 0, 0);"> TimeSpan(</span><span style="color: rgb(128, 0, 128);">0</span><span style="color: rgb(0, 0, 0);">, </span><span style="color: rgb(128, 0, 128);">0</span><span style="color: rgb(0, 0, 0);">, System.Web.HttpContext.Current.Session.Timeout, </span><span style="color: rgb(128, 0, 128);">0</span><span style="color: rgb(0, 0, 0);">, </span><span style="color: rgb(128, 0, 128);">0</span><span style="color: rgb(0, 0, 0);">);
</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">第一次登陆的时候插入一个用户相关的cache值，</span><span style="color: rgb(0, 128, 0);">
</span><span style="color: rgb(0, 0, 0);">HttpContext.Current.Cache.Insert(key, key, </span><span style="color: rgb(0, 0, 255);">null</span><span style="color: rgb(0, 0, 0);">, DateTime.MaxValue, SessTimeout, System.Web.Caching.CacheItemPriority.NotRemovable, </span><span style="color: rgb(0, 0, 255);">null</span><span style="color: rgb(0, 0, 0);">);　
Session[</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">ADMINID</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">] </span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);"> TextBox1.Text;　
Response.Redirect(</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(128, 0, 0);">main.aspx</span><span style="color: rgb(128, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">);
}
</span><span style="color: rgb(0, 0, 255);">else</span><span style="color: rgb(0, 0, 0);">
{　
</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">重复登陆　Response.Write("<script>alert('您的账号已经登陆!');window.location='login.aspx';</script>");</span><span style="color: rgb(0, 128, 0);">
</span><span style="color: rgb(0, 0, 0);">}</span>
</div>
</div>
</div>
试试其它关键字
　防止同一账户重复登录　
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