string conStr;

string strSql;

conStr = "provider = microsoft.jet.OLEDB.4.0;" + "Data Source =d:\\db1.mdb";

OleDbConnection con = new OleDbConnection(conStr);

strSql = "Select * from Table1";

OleDbDataAdapter da = new OleDbDataAdapter(strSql, con);

DataSet ds = new DataSet();

da.Fill(ds, "Table1");

dataGridView1.DataBindings.Add(new Binding("DataSource", ds, "Table1"));