why doesn't datagridview refresh?

Question

here is what happens after i press a button:

    dataGridView1.DataSource = ConnectandReadList(some_query);
    dataGridView1.Refresh();

pl

Answer 1

try this?

dataGridView1.DataSource = null;
dataGridView1.DataSource = ConnectandReadList(some_query);
dataGridView1.Refresh();