提供创建和操作各 HTTP Cookie 的类型安全方法。
#region 写入指定Cookie的值 +static void WriteCookie(string cookieName, string data, DateTime expires)
/// <summary>
/// 写入指定Cookie的值
/// </summary>
/// <param name="cookieName">cookie名称</param>
/// <param name="data">cookie值</param>
/// <param name="expires">过期时间</param>
public static void WriteCookie(string cookieName, string data, DateTime expires)
{
HttpCookie cookie = new HttpCookie(cookieName);
if (HttpContext.Current.Request.Url.Host.Contains(DOMAIN))
{
cookie.Domain = DOMAIN;
}
cookie.Expires = expires;
cookie.Value = HttpContext.Current.Server.UrlEncode(data);
HttpContext.Current.Response.Cookies.Add(cookie);
}
#endregion
官网示例：
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
StringBuilder sb = new StringBuilder();
// Get cookie from the current request.
HttpCookie cookie = Request.Cookies.Get("DateCookieExample");
// Check if cookie exists in the current request.
if (cookie == null)
{
sb.Append("Cookie was not received from the client. ");
sb.Append("Creating cookie to add to the response. <br/>");
// Create cookie.
cookie = new HttpCookie("DateCookieExample");
// Set value of cookie to current date time.
cookie.Value = DateTime.Now.ToString();
// Set cookie to expire in 10 minutes.
cookie.Expires = DateTime.Now.AddMinutes(10d);
// Insert the cookie in the current HttpResponse.
Response.Cookies.Add(cookie);
}
else
{
sb.Append("Cookie retrieved from client. <br/>");
sb.Append("Cookie Name: " + cookie.Name + "<br/>");
sb.Append("Cookie Value: " + cookie.Value + "<br/>");
sb.Append("Cookie Expiration Date: " +
cookie.Expires.ToString() + "<br/>");
}
Label1.Text = sb.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>HttpCookie Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label id="Label1" runat="server"></asp:Label>
</div>
</form>
</body>
</html>