private void buttonAddBug_Click(object sender, EventArgs e)
{
dataGridViewList.Hide();
if (abf == null)
{
abf = new AddbugForm();
abf.MdiParent = this;
abf.FormClosed += abf_FormClosed;
abf.Show();
}
else
{
abf.Activate();
}
}
void abf_FormClosed(object sender, FormClosedEventArgs e)
{
abf = null;
// throw new NotImplementedException();
}