static void AddShell(Shell shell)
{
if ((shell != null) && !String.IsNullOrWhiteSpace(shell.ShellId))
{
try {
if (Shells.ContainsKey(shell.ShellId))
{
Shell s = (Shell)Shells[shell.ShellId];
if (s.Equals(shell))
{
return;
}
s.Close();
}
Shells[shell.ShellId] = shell;
} catch (Exception) {
}
}
}