title: How to identify which ListView was rightclicked ?
body: <p>I have a <code>ContextMenu</code> assigned to two <code>ListView</code>s. How to know which <code>ListView</code> it was used with so I can apply correct method? I guess <code>sender</code> is important here but how do I use it? How to know what <code>sender</code> is at this very moment?</p>
  
  <pre><code>private void contextMenuDokumentyDodaj_Click(object sender, EventArgs e) {
      var dokumenty = new DocumentsGui(varKlienciID, varPortfelID);
      dokumenty.Show();
      dokumenty.FormClosed += varDocumentsGui_FormClosed;
  }
  </code></pre>