string sAccessFilePath = SuspenseMgrAccess

Properties.Settings.Default.AccessFilePathAndname;

if (File.Exists(sAccessFilePath))
{
ConnectionString = SuspenseMgrAccess.Properties.Settings.Default.AccessConnectionString;
OleDbConnection objConn = new System.Data.OleDb.OleDbConnection(ConnectionString);

String QueryString = "SELECT * FROM tbl_Loan";
OleDbCommand Cmd = new OleDbCommand(QueryString, objConn);

objConn.Open();
OleDbDataReader reader = Cmd.ExecuteReader();

OleDbDataAdapter dataAdapter = new OleDbDataAdapter(QueryString, objConn);
OleDbCommandBuilder commandBuilder = new OleDbCommandBuilder(dataAdapter);
DataTable table = new DataTable();
dataAdapter.Fill(table);

dataGridView1.DataSource = table;
objConn.Close();
}