private void _downloadSignatureListView_ContextMenuOpening(object sender, ContextMenuEventArgs e)
{
var selectItems = _downloadSignatureListView.SelectedItems;
_downloadSignatureListViewDeleteMenuItem.IsEnabled = (selectItems == null) ? false : (selectItems.Count > 0);
_downloadSignatureListViewCutMenuItem.IsEnabled = (selectItems == null) ? false : (selectItems.Count > 0);
_downloadSignatureListViewCopyMenuItem.IsEnabled = (selectItems == null) ? false : (selectItems.Count > 0);
{
bool flag = false;
if (Clipboard.ContainsText())
{
var line = Clipboard.GetText().Split('\r', '\n');
flag = Signature.Check(line[0]);
}
_downloadSignatureListViewPasteMenuItem.IsEnabled = flag;
}
}