string connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\myDatabase.mdb";
string query = "SELECT * FROM MyTable";
OleDbDataAdapter dAdapter = new OleDbDataAdapter(query, connString);
OleDbCommandBuilder cBuilder = new OleDbCommandBuilder(dAdapter);
DataTable dTable = new DataTable();
dAdapter.Fill(dTable);
DataGridView dgView = new DataGridView();
BindingSource bSource = new BindingSource();
bSource.DataSource = dTable;
dgView.DataSource = bSource;
dAdapter.Update(dTable);