public frmHelp()
{
InitializeComponent();
help = this;
}
private void tsbtnHelp_Click(object sender, RoutedEventArgs e)
{
if (frmHelp.help == null)
{
frmHelp help = new frmHelp();
help.Show();
}
else
{
frmHelp.help.Show();
frmHelp.help.WindowState = System.Windows.WindowState.Normal;
}
}