Работа с dbf в C# - вывести содержимое dbf в dataGridView

string FilePath= "C:\\Users\\Administrator\\Desktop\\";
       string DBF_FileName = "SCTFIN.dbf";
       OdbcConnection obdcconn = new System.Data.Odbc.OdbcConnection();       
       obdcconn.ConnectionString = "Driver={Microsoft dBase Driver (*.dbf)};SourceType=DBF;SourceDB=" + FilePath+ ";Exclusive=No; NULL=NO;DELETED=NO;BACKGROUNDFETCH=NO;";
       obdcconn.Open();
       OdbcCommand oCmd = obdcconn.CreateCommand();
       oCmd.CommandText = "SELECT * FROM " + FilePath + DBF_FileName;
 
         /*Load data to table*/
 
       DataTable dt1 = new DataTable();
       dt1.Load(oCmd.ExecuteReader());
       obdcconn.Close();
 
         /*Bind data to grid*/
 
       gv1.DataSource = dt1;
       gv1.DataBind();

class WDBF
    {
        private OdbcConnection _connection = null;
        public DataTable Execute(string command)
        {
            DataTable dt = null;
            if (_connection != null)
            {
                try
                {
                    _connection.Open();
                    dt = new DataTable();
                    System.Data.Odbc.OdbcCommand oCmd = _connection.CreateCommand();
                    oCmd.CommandText = command;
                    dt.Load(oCmd.ExecuteReader());
                    _connection.Close();
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.Message);
                }
            }
            return dt;
        }
        public DataTable GetAll(string dbpath)
        {
            return Execute("SELECT * FROM " + dbpath);
        }
 
        public WorkDBF()
        {
            this._connection = new System.Data.Odbc.OdbcConnection();
            _connection.ConnectionString = @"Driver={Microsoft dBase Driver (*.dbf)};" +
                "SourceType=DBF;Exclusive=No;" +
                "Collate=Machine;NULL=NO;DELETED=NO;" +
                "BACKGROUNDFETCH=NO;";
        }
    }
}

WorkDBF WDBF = new WorkDBF();
            var dt = WDBF.GetAll("C:\\Users\\******\\Documents\\BNKSEEK.DBF");
            dataGridView1.DataSource = dt;

            
            OleDbConnection conn;
            OleDbDataAdapter oledbAdapter;
            DataSet ds;
            OleDbCommand cmd;
            ds = new DataSet();
            string connetionString = null;
            connetionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + putFileName + "; Extended Properties=dBASE IV;";
            conn = new OleDbConnection(connetionString);
            try
            {
                conn.Open();
                toolStripStatusLabel2.Text = "Open File:" + strFileName;
            }
            catch (Exception ex)
            {
                toolStripStatusLabel2.Text = "Can not open connection ! " + ex;
            }
            string Sql = "select * from " + strFileName;
            oledbAdapter = new OleDbDataAdapter(Sql, conn);
            oledbAdapter.Fill(ds);
            dataGridView1.DataSource = ds.Tables[0];