internal DelegateSessionEntry GetDelegateSessionEntry(IExchangePrincipal principal, OpenBy openBy)
{
MailboxSession mailboxSession = null;
DelegateSessionEntry delegateSessionEntry = null;
bool flag = false;
try
{
if (!this.DelegateSessionCacheInstance.TryGet(principal, openBy, out delegateSessionEntry))
{
mailboxSession = MailboxSession.InternalOpenDelegateAccess(this.masterMailboxSession, principal);
delegateSessionEntry = this.DelegateSessionCacheInstance.Add(new DelegateSessionEntry(mailboxSession, openBy));
}
if (!delegateSessionEntry.IsConnected)
{
delegateSessionEntry.Connect();
}
flag = true;
}
finally
{
if (!flag)
{
if (delegateSessionEntry != null)
{
this.DelegateSessionCacheInstance.RemoveEntry(delegateSessionEntry);
}
else if (mailboxSession != null)
{
mailboxSession.CanDispose = true;
mailboxSession.Dispose();
mailboxSession = null;
}
}
}
return(delegateSessionEntry);
}
