Question

I have a Checkbox array. I placed it in a Listview. I set the CheckedChanged event handler for them. The CheckedChanged event fires successfully and I want to get the GUID of the control from the sender object. How can I get the GUID?

_ckeckBox[i].CheckedChanged += new EventHandler(frmMain_CheckedChanged);

void frmMain_CheckedChanged(object sender, EventArgs e)
{ 

}

Answer 1

As commentators have mentioned, the sender parameter tells you which control is calling the event:

void frmMain_CheckedChanged(object sender, EventArgs e)
{ 
  CheckBox cb = sender as CheckBox;
  if (cb != null) {
    MessageBox.Show("Checked " + cb.Name);
  }
}