.NET Session操作

public class SessionHelper
{
/// <summary>
/// 根据session名获取session对象
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public static object GetSession(string name)
{
return HttpContext.Current.Session[name];
}
/// <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);
}
/// <summary>
/// 添加Session，调动有效期为20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 = 20;
}

/// <summary>
/// 添加Session，调动有效期为20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 = 20;
}

/// <summary>
/// 添加Session
/// </summary>
/// <param name="strSessionName">Session对象名称</param>
/// <param name="strValue">Session值</param>
/// <param name="iExpires">调动有效期（分钟）</param>
public static void Add(string strSessionName, string strValue, int iExpires)
{
HttpContext.Current.Session[strSessionName] = strValue;
HttpContext.Current.Session.Timeout = iExpires;
}

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

/// <summary>
/// 读取某个Session对象值
/// </summary>
/// <param name="strSessionName">Session对象名称</param>
/// <returns>Session对象值</returns>
public static string Get(string strSessionName)
{
if (HttpContext.Current.Session[strSessionName] == null)
{
return null;
}
else
{
return HttpContext.Current.Session[strSessionName].ToString();
}
}

public static void Set<T>(string strSessionName, T value) where T : class , new()
{
HttpContext.Current.Session[strSessionName] = value;
HttpContext.Current.Session.Timeout = 24 * 60;
}

/// <summary>
/// 读取某个Session对象值
/// </summary>
/// <param name="strSessionName">Session对象名称</param>
/// <returns>Session对象值</returns>
public static T Get<T>(string strSessionName) where T : class , new()
{
if (HttpContext.Current == null || HttpContext.Current.Session == null || HttpContext.Current.Session[strSessionName] == null)
{
return null;
}
else
{
return HttpContext.Current.Session[strSessionName] as T;
}
}

/// <summary>
/// 读取某个Session对象值数组
/// </summary>
/// <param name="strSessionName">Session对象名称</param>
/// <returns>Session对象值数组</returns>
public static string[] Gets(string strSessionName)
{
if (HttpContext.Current.Session[strSessionName] == null)
{
return null;
}
else
{
return (string[])HttpContext.Current.Session[strSessionName];
}
}

/// <summary>
/// 删除某个Session对象
/// </summary>
/// <param name="strSessionName">Session对象名称</param>
public static void Del(string strSessionName)
{
HttpContext.Current.Session[strSessionName] = null;
}
}