private void tbxSearch_TextChanged(object sender, EventArgs e)
{
string fname = tbxSearch.Text;
if (fname == "")
{
UpdateDataGridView();
}
else
{
List <PositionLog> eList = new List <PositionLog>();
eList.Add(managment.GetPositionLogByName(fname));
BindingList <PositionLog> pos = new BindingList <PositionLog>(eList);
BindingSource source = new BindingSource(pos, null);
dataGridView3.DataSource = source;
}
}