/// <summary>
/// 从保存的位置加载数据。
/// </summary>
private void LoadViewState()
{
//加载
string str = "";
#region 提取数据
switch (SaveLocation)
{
case SaveViewStateLocation.Cookie:
if (HttpContext.Current.Request.Cookies[ClientID] == null)
{
return;
}
str = HttpContext.Current.Request.Cookies[ClientID].Value;
break;
case SaveViewStateLocation.Hidden:
if (Page == null)
{
return;
}
if (HttpContext.Current.Request[ClientID] == null)
{
return;
}
str = HttpContext.Current.Request[ClientID];
break;
case SaveViewStateLocation.Session:
str = HttpContext.Current.Session[ClientID].ToString();
break;
case SaveViewStateLocation.Cache:
str = HttpContext.Current.Cache[ClientID].ToString();
break;
case SaveViewStateLocation.Application:
str = HttpContext.Current.Application[ClientID].ToString();
break;
}
#endregion
if (str.Length == 0) //没有取到值
{
return;
}
if (Key.Length > 0)
{
//解密
str = DesBase64.Decrypt(str, Key);
}
//拆分
string[] arr = str.Split('`');
//赋值
for (int i = 0; i < arr.Length; i += 2)
{
if (!vs.ContainsKey(arr[i]))
{
vs.Add(arr[i], arr[i + 1]);
}
}
}
/// <summary>
/// 把数据保存到指定的位置里面。
/// </summary>
private void SaveViewState() //virtual object
{
//拼接字符串
var str = new StringBuilder(1000);
foreach (KeyValuePair <string, string> entry in vs)
{
str.Append(entry.Key);
str.Append("`");
str.Append(entry.Value);
str.Append("`");
}
if (str.Length == 0) //没有赋值
{
return;
}
str.Remove(str.Length - 1, 1);
string myData = str.ToString();
if (Key.Length > 0)
{
//加密
myData = DesBase64.Encrypt(myData, Key);
}
str.Length = 0;
#region 保存
switch (SaveLocation)
{
case SaveViewStateLocation.Cookie:
//HttpContext.Current.Response.Cookies[ClientID].Value = myData;
var httpCookie = HttpContext.Current.Response.Cookies[ClientID];
if (httpCookie != null)
{
httpCookie.Value = myData;
}
break;
case SaveViewStateLocation.Hidden:
#region
if (Page != null)
{
Page.ClientScript.RegisterHiddenField(ClientID, myData);
}
#endregion
break;
case SaveViewStateLocation.Session:
HttpContext.Current.Session[ClientID] = myData;
break;
case SaveViewStateLocation.Cache:
HttpContext.Current.Cache[ClientID] = myData;
break;
case SaveViewStateLocation.Application:
HttpContext.Current.Application[ClientID] = myData;
break;
}
#endregion
}