Question

Let’s say you have a light shop where you sale and purchase having different types of light and different electric appliances. Now using principles of OOP I want you want make an OOP program which can cater the aforementioned problem.(show different types of purchase and sales )

C#

Answer 1

public List<PurchaseOrder> Save(PurchaseOrder po)

{

List<PurchaseOrder> poList = InitialData();

po.PoNumber = "PO010003";

poList.Add(po);

return poList;

}

public ActionResult Update([DataSourceRequest] DataSourceRequest request, [Bind(Prefix = "models")]IEnumerable<ProductViewModel> products)

{

if (products != null && this.ModelState.IsValid)

{

var purchaseOrder = new PurchaseOrder()

{

DateOfOrder = DateTime.Now,

DateOfDelivery = DateTime.Now.AddDays(2),

ClientId = this.UserProfile.OrganizationId ?? 0,

SupplierId = products.FirstOrDefault().SupplierId,

CreatorId = this.UserProfile.Id

};

this.PurchaseOrders.Add(purchaseOrder);

var order = products.Select(product => new OrderQuantity()

{

ProductId = product.Id, PurchaseOrderId = purchaseOrder.Id, Quantity = product.Quantities

}).ToList();

this.OrderQuantities.Add(order);

this.AddToastMessage("Succefull", "You made order !", ToastType.Success);

return this.Redirect("/Private/Orders/All");

}

this.AddToastMessage("Error!", string.Empty, ToastType.Error);

return this.Json(products.ToDataSourceResult(request, this.ModelState));

}

public static Batch CreateOrders2()

{

var b = new Batch();

var o = new PurchaseOrder();

o.CustId = "001";

var i = new light();

i.ProdId = "111";

i.Price = 500;

i.Quantity = 1;

o.Item.Add(i);

i = new fan();

i.ProdId = "222";

i.Price = 150;

i.Quantity = 3;

o.light.Add(i);

o.fan.Add(i);

b.PurchaseOrder.Add(o);

o = new PurchaseOrder();

o.CustId = "002";

i = new cooker();

i.ProdId = "333";

i.Price = 250;

i.Quantity = 1;

b.PurchaseOrder.Add(o);

return b;

}

protected void btnSave_Click(object sender, EventArgs e)

{

PurchaseOrderModule module = new PurchaseOrderModule();

PurchaseOrder purchaseOrder = new PurchaseOrder();

try

{

purchaseOrder.CustomerId = Convert.ToInt32(ddlCustomers.SelectedValue);

purchaseOrder.PONo = txtPONo.Text;

purchaseOrder.Price = Convert.ToDecimal(txtPrice.Text);

purchaseOrder.CreatedBy = txtCreatedBy.Text;

purchaseOrder.DateCreated = Convert.ToDateTime(txtDateCreated.Text);

purchaseOrder.DeliveryDateTime = Convert.ToDateTime(txtDeliveryDate.Text);

purchaseOrder.Quantity = Convert.ToInt32(txtQuantity.Text);

purchaseOrder.Remarks = txtRemarks.Text;

purchaseOrder.Status = Convert.ToInt32(ddlStatus.SelectedValue);

purchaseOrder.TotalPrice = Convert.ToDecimal(txtTotalPrice.Text);

if (ViewState["id"] != null)

purchaseOrder.Id = Convert.ToInt32(ViewState["id"]);

module.Save(purchaseOrder);

Response.Redirect("~/PurchasedOrder.aspx");

//lblCustomer.Text = ddlCustomers.SelectedValue;

//Helper.EnableControls(false, Helper.GetControlsInPlaceHolder("InfoPlaceHolder", Master));

}

catch (Exception ex)

{

lblError.Text = "Please contact administrator. Error message : " + ex.Message;

}

}

public PurchaseOrder Add(PurchaseOrder order)

{

this.orders.Add(order);

this.orders.Save();

return order;

public CheckoutDetailsVM(PurchaseOrder p, string FullName, string Email, string BillingAddress, string ShippingAddress)

{

this.LastOrder = p;

this.FullName = FullName;

this.Email = Email;

this.BillingAddress = BillingAddress;

this.ShippingAddress = ShippingAddress;

}

public void CreateUpdateCustomer(PurchaseOrder order, IIdentity identity)

{

// try catch so this does not interrupt the order process.

try

{

var billingAddress = order.OrderAddresses.FirstOrDefault(x => x.Name == Constants.Order.BillingAddressName);

var shippingAddress = order.OrderAddresses.FirstOrDefault(x => x.Name == Constants.Order.ShippingAddressName);

MembershipUser user = null;

if (!identity.IsAuthenticated)

{

string email = null;

if (billingAddress != null)

{

email = billingAddress.Email.Trim();

user = Membership.GetUser(email);

}

if (user == null)

{

var customer = CreateCustomer(email, Guid.NewGuid().ToString(), billingAddress.DaytimePhoneNumber, billingAddress, shippingAddress, false,

createStatus => Log.Error("Failed to create user during order completion. " + createStatus.ToString()));

if (customer != null)

{

order.CustomerId = Guid.Parse(customer.PrimaryKeyId.Value.ToString());

order.CustomerName = customer.FirstName + " " + customer.LastName;

order.AcceptChanges(); SetExtraCustomerProperties(order, customer); _emailService.SendWelcomeEmail(billingAddress.Email);

}

}

else

{

var customer = CustomerContext.Current.GetContactForUser(user);

order.CustomerName = customer.FirstName + " " + customer.LastName;

order.CustomerId = Guid.Parse(customer.PrimaryKeyId.Value.ToString());

order.AcceptChanges();

SetExtraCustomerProperties(order, customer);

}

}

else

{

user = Membership.GetUser(identity.Name);

var customer = CustomerContext.Current.GetContactForUser(user);

SetExtraCustomerProperties(order, customer);

}

}

catch (Exception ex)

{

// Log here

Log.Error("Error during creating / update user", ex);

}

}

private void Create(string filename)

{

XmlSerializer ser=new XmlSerializer(typeof(PurchaseOrder));

PurchaseOrder po=new PurchaseOrder();

Address addr=new Address();

addr.FirstName="xxxx";

po.MyAddress=addr;

TextWriter writer=new StreamWriter(filename);

ser.Serialize(writer, po);

writer.Close();

}

private void Create(string filename)

{

XmlSerializer ser=new XmlSerializer(typeof(PurchaseOrder));

PurchaseOrder po=new PurchaseOrder();

Light item1=new Light("Philips", (decimal)500.2);

Fan item2=new Fan("Usha", (decimal)150.4);

Cooker item3=new Cooker("Prestige",(decimal)250.33)

po.ItemsOrdered=new Light[1];

po.ItemsOrdered=new Fan[3];

po.ItemsOrdered=new Cooker [1];

po.ItemsOrdered[0]=item1;

po.ItemsOrdered[1]=item2;

TextWriter writer=new StreamWriter(filename);

ser.Serialize(writer, po);

writer.Close();

}