ASP.NET Session的生命周期问题

/// <summary>
/// 设置session
/// </summary>
/// <param name="name">session 名</param>
/// <param name="val">session 值</param>
public static void SetSession(string name, object val)
{
HttpContext.Current.Session.Remove(name);
HttpContext.Current.Session.Add(name, val);
HttpContext.Current.Session.Timeout = 1440;
}
/// <summary>
/// 添加Session，调动有效期为1440分钟
/// </summary>
/// <param name="strSessionName">Session对象名称</param>
/// <param name="strValue">Session值</param>
public static void Add(string strSessionName, string strValue)
{
HttpContext.Current.Session[strSessionName] = strValue;
HttpContext.Current.Session.Timeout = 1440;
}

/// <summary>
/// 添加Session，调动有效期为1440分钟
/// </summary>
/// <param name="strSessionName">Session对象名称</param>
/// <param name="strValues">Session值数组</param>
public static void Adds(string strSessionName, string[] strValues)
{
HttpContext.Current.Session[strSessionName] = strValues;
HttpContext.Current.Session.Timeout = 1440;
}