private void toolStripMenuItem1_Click(object sender, EventArgs e)
 {
     if (MessageBox.Show($"Вы уверены, что хотите удалить {_active.FocusedItem.Text} ?", "Удаление", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
     {
         ContextMenuMethods.Delete(_active, (_active == listView1 ? label1 : label2).Text);
         Update(_active, _active == listView1 ? _left : _right);
     }
 }
 protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
 {
     if (keyData == (Keys.Control | Keys.C))
     {
         ContextMenuMethods.Copy(_active, (_active == listView1 ? label1 : label2).Text);
         return(true);
     }
     else if (keyData == (Keys.Control | Keys.V))
     {
         ContextMenuMethods.Paste(_active, (_active == listView1 ? label1 : label2).Text + "\\" + _active.FocusedItem.Text);
         return(true);
     }
     return(base.ProcessCmdKey(ref msg, keyData));
 }
 private void вставитьToolStripMenuItem_Click(object sender, EventArgs e)
 {
     ContextMenuMethods.Paste(_active, (_active == listView1 ? label1 : label2).Text + "\\" + _active.FocusedItem.Text);
     Update(_active, _active == listView1 ? _left : _right);
 }
 private void коопироватьToolStripMenuItem_Click(object sender, EventArgs e)
 {
     ContextMenuMethods.Copy(_active, (_active == listView1 ? label1 : label2).Text);
     Update(_active, _active == listView1 ? _left : _right);
 }