void DeserializeItem(String name, bool check)
{
object val;
lock (_serializedItemsLock) {
if (check)
{
// No-op if SessionStateItemCollection is not deserialized from a persistent storage,
if (_serializedItems == null)
{
return;
}
// User is asking for an item we don't have.
if (!_serializedItems.ContainsKey(name))
{
return;
}
}
Debug.Assert(_serializedItems != null);
Debug.Assert(_stream != null);
SerializedItemPosition position = (SerializedItemPosition)_serializedItems[name];
if (position.IsDeserialized)
{
// It has been deserialized already.
return;
}
// Position the stream to the place where the item is stored.
_stream.Seek(position.Offset, SeekOrigin.Begin);
// Set the value
Debug.Trace("SessionStateItemCollection", "Deserialized an item: keyname=" + name);
if (!HttpRuntime.DisableProcessRequestInApplicationTrust)
{
// VSWhidbey 427316: Sandbox Serialization in non full trust cases
if (HttpRuntime.NamedPermissionSet != null && HttpRuntime.ProcessRequestInApplicationTrust)
{
HttpRuntime.NamedPermissionSet.PermitOnly();
}
}
// This deserialization work used to be done in AcquireRequestState event when
// there is no user code on the stack.
// In whidbey we added this on-demand deserialization for performance reason. However,
// in medium and low trust cases the page doesn't have permission to do it.
// So we have to assert the permission.
// (See VSWhidbey 275003)
val = ReadValueFromStreamWithAssert();
BaseSet(name, val);
// At the end, mark the item as deserialized by making the offset -1
position.MarkDeserializedOffsetAndCheck();
}
}
private void DeserializeItem(string name, bool check)
{
lock (this._serializedItemsLock)
{
if (!check || ((this._serializedItems != null) && this._serializedItems.ContainsKey(name)))
{
SerializedItemPosition position = (SerializedItemPosition)this._serializedItems[name];
if (!position.IsDeserialized)
{
this._stream.Seek((long)position.Offset, SeekOrigin.Begin);
if ((!HttpRuntime.DisableProcessRequestInApplicationTrust && (HttpRuntime.NamedPermissionSet != null)) && HttpRuntime.ProcessRequestInApplicationTrust)
{
HttpRuntime.NamedPermissionSet.PermitOnly();
}
object obj2 = this.ReadValueFromStreamWithAssert();
base.BaseSet(name, obj2);
position.MarkDeserializedOffsetAndCheck();
}
}
}
}