//does not include order date because that is indicated by file name
public string OrderToLineInFile()
{
string result = string.Format("{0},{1},{2},{3},{4},{5},{6},{7},{8},{9},{10},{11}", OrderNumber, CustomerName, State.ToString(),
TaxRate.ToString(), ProductType.ToString(), Area.ToString(), CostPerSquareFoot.ToString(),
LaborCostPerSquareFoot.ToString(), MaterialCost.ToString(), LaborCost.ToString(),
Tax.ToString(), Total.ToString());
return(result);
}
public override string ToString()
{
return(MaterialCost.ToString());
}