public void EditParticipant_Click(object sender, EventArgs e)
{
int ID = Convert.ToInt32(ParticipantControl.listView.SelectedItems[0].SubItems[0]);
AddParticipantForm addPar = new AddParticipantForm();
addPar.ShowForm(ID);
}
public void AddParticipant_Click(object sender, EventArgs e)
{
AddParticipantForm addPar = new AddParticipantForm();
addPar.ShowForm();
}