How to delete the single quotes( ' ) from my out put grid view C#

String name = "exx";
           String constr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" +
                           "C:\\fingerprint\\exx.csv" +
                           ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=1\";";


           OleDbConnection con = new OleDbConnection(constr);
           OleDbCommand oconn = new OleDbCommand("Select * From [" + name + "$]", con);
           con.Open();

           OleDbDataAdapter sda = new OleDbDataAdapter(oconn);
           data = new DataTable();
           sda.Fill(data);
           dataGridView1.DataSource = data;

           ds = new DataSet();
           OleDbConnection conn = new OleDbConnection(constr);
           OleDbCommand oconnn = new OleDbCommand("Select * From [" + name + "$]", conn);

           OleDbDataAdapter sdaa = new OleDbDataAdapter(oconnn);
           sda.Fill(ds);