C# to Access connection in Visual Form OleDb No data exists for the row/column OR invalid output

Question

I am trying to get a Text value from a single cell in an Access form, but this code gives me System.Data.OleDb.OleDbDataReader as an output instead. When I change Sell to *, and Convert.ToString(cusReader) to Convert.ToString(cusReader.getValue(1)), I get the error in the title. How do I fix this? Thanks, Jack.

 OleDbCommand cmd = new OleDbCommand("SELECT Sell FROM Product WHERE ID = " + Count, conn);
            OleDbDataReader cusReader = cmd.ExecuteReader();

            if (Count != 0)
            {
                labelInsertedExtra.Visible = true;
                labelInserted.Visible = true;
                labelInsertedExtra.Text = Convert.ToString(cusReader);
            }
            else
            {
                labelInsertedExtra.Visible = false;
                labelInserted.Visible = false;
            }
            cusReader.Close();

Answer 1

Indice start to 0

   Convert.ToString(cusReader.getValue(0)) 

you should test dbnullvalue too

      while (cusReader.Read())
      {

        if (Count != 0 && cusReader["Sell"] != DBNull.Value)
        {
            labelInsertedExtra.Visible = true;
            labelInserted.Visible = true;
            labelInsertedExtra.Text = cusReader["Sell"].ToString(); 
        }
        else
        {
            labelInsertedExtra.Visible = false;
            labelInserted.Visible = false;
        }

        break;
      }