private void rebuildTheGraphAndTuneToolStripMenuItem_Click(object sender, EventArgs e)
{
if (this.treeViewChannel.SelectedNode != null && this.treeViewChannel.SelectedNode.Tag is ChannelTV)
{
ChannelTV channel = this.treeViewChannel.SelectedNode.Tag as ChannelTV;
MainForm.TuneChannelGUI((Channel)channel, true);
}
}