private void add_ToolStripButton_Click(object sender, EventArgs e)
{
ActiveDirectoryGroup group = new ActiveDirectoryGroup();
if (EditEntry(group) == DialogResult.OK)
{
_context.AddToActiveDirectoryGroups(group);
_selectedItemsList.Add(group);
int index = activeDirectory_DataGridView.Rows.Count - 1;
activeDirectory_DataGridView.Rows[index].Selected = true;
//In case if you want to scroll down as well.
activeDirectory_DataGridView.FirstDisplayedScrollingRowIndex = index;
}
}