In Visual Basic:
Imports System.ComponentModel
Imports System.Collections.Generic
Namespace DataUtilVB
Public Class DataUtil
#Region "private members"
#Region "private fields"
Private Shared m_categories As List(Of Category)
Private Shared m_products As List(Of Product)
Private Shared m_categoriesAndProducts As List(Of Category)
#End Region
#Region "private methods"
Private Shared Function CreateCategories() As List(Of Category)
Dim retVal As New List(Of Category)()
retVal.Add(New Category With {.CategoryID = 1, .CategoryName = "Beverages", .Description = "Soft drinks, coffees, teas, beers, and ales"})
retVal.Add(New Category With {.CategoryID = 2, .CategoryName = "Condiments", .Description = "Sweet and savory sauces, relishes, spreads, and seasonings"})
retVal.Add(New Category With {.CategoryID = 3, .CategoryName = "Confections", .Description = "Desserts, candies, and sweet breads"})
retVal.Add(New Category With {.CategoryID = 4, .CategoryName = "Dairy Products", .Description = "Cheeses"})
retVal.Add(New Category With {.CategoryID = 5, .CategoryName = "Grains/Cereals", .Description = "Breads, crackers, pasta, and cereal"})
retVal.Add(New Category With {.CategoryID = 6, .CategoryName = "Meat/Poultry", .Description = "Prepared meats"})
retVal.Add(New Category With {.CategoryID = 7, .CategoryName = "Produce", .Description = "Dried fruit and bean curd"})
retVal.Add(New Category With {.CategoryID = 8, .CategoryName = "Seafood", .Description = "Seaweed and fish"})
Return retVal
End Function
Private Shared Function CreateProducts() As List(Of Product)
Dim retVal As New List(Of Product)()
retVal.Add(New Product With {.ProductID = 1, .ProductName = "Chai", .CategoryID = 1, .QuantityPerUnit = "10 boxes x 20 bags", .UnitPrice = 18D, .UnitsInStock = 39, .UnitsOnOrder = 0, .ReorderLevel = 10, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 2, .ProductName = "Chang", .CategoryID = 1, .QuantityPerUnit = "24 - 12 oz bottles", .UnitPrice = 19D, .UnitsInStock = 17, .UnitsOnOrder = 40, .ReorderLevel = 25, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 24, .ProductName = "Guaraná Fantástica", .CategoryID = 1, .QuantityPerUnit = "12 - 355 ml cans", .UnitPrice = 4.5D, .UnitsInStock = 20, .UnitsOnOrder = 0, .ReorderLevel = 0, .Discontinued = True})
retVal.Add(New Product With {.ProductID = 77, .ProductName = "Original Frankfurter grüne Soße", .CategoryID = 2, .QuantityPerUnit = "12 boxes", .UnitPrice = 13D, .UnitsInStock = 32, .UnitsOnOrder = 0, .ReorderLevel = 15, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 61, .ProductName = "Sirop d'érable", .CategoryID = 2, .QuantityPerUnit = "24 - 500 ml bottles", .UnitPrice = 28.5D, .UnitsInStock = 113, .UnitsOnOrder = 0, .ReorderLevel = 25, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 63, .ProductName = "Vegie-spread", .CategoryID = 2, .QuantityPerUnit = "15 - 625 g jars", .UnitPrice = 43.9D, .UnitsInStock = 24, .UnitsOnOrder = 0, .ReorderLevel = 5, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 16, .ProductName = "Pavlova", .CategoryID = 3, .QuantityPerUnit = "32 - 500 g boxes", .UnitPrice = 17.45D, .UnitsInStock = 29, .UnitsOnOrder = 0, .ReorderLevel = 10, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 19, .ProductName = "Teatime Chocolate Biscuits", .CategoryID = 3, .QuantityPerUnit = "10 boxes x 12 pieces", .UnitPrice = 9.2D, .UnitsInStock = 25, .UnitsOnOrder = 0, .ReorderLevel = 5, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 20, .ProductName = "Sir Rodney's Marmalade", .CategoryID = 3, .QuantityPerUnit = "30 gift boxes", .UnitPrice = 81D, .UnitsInStock = 40, .UnitsOnOrder = 0, .ReorderLevel = 0, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 69, .ProductName = "Gudbrandsdalsost", .CategoryID = 4, .QuantityPerUnit = "10 kg pkg.", .UnitPrice = 36D, .UnitsInStock = 26, .UnitsOnOrder = 0, .ReorderLevel = 15, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 71, .ProductName = "Flotemysost", .CategoryID = 4, .QuantityPerUnit = "10 - 500 g pkgs.", .UnitPrice = 21.5D, .UnitsInStock = 26, .UnitsOnOrder = 0, .ReorderLevel = 0, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 72, .ProductName = "Mozzarella di Giovanni", .CategoryID = 4, .QuantityPerUnit = "24 - 200 g pkgs.", .UnitPrice = 34.8D, .UnitsInStock = 14, .UnitsOnOrder = 0, .ReorderLevel = 0, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 22, .ProductName = "Gustaf's Knäckebröd", .CategoryID = 5, .QuantityPerUnit = "24 - 500 g pkgs.", .UnitPrice = 21D, .UnitsInStock = 104, .UnitsOnOrder = 0, .ReorderLevel = 25, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 23, .ProductName = "Tunnbröd", .CategoryID = 5, .QuantityPerUnit = "12 - 250 g pkgs.", .UnitPrice = 9D, .UnitsInStock = 61, .UnitsOnOrder = 0, .ReorderLevel = 25, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 64, .ProductName = "Wimmers gute Semmelknödel", .CategoryID = 5, .QuantityPerUnit = "20 bags x 4 pieces", .UnitPrice = 33.25D, .UnitsInStock = 22, .UnitsOnOrder = 80, .ReorderLevel = 30, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 53, .ProductName = "Perth Pasties", .CategoryID = 6, .QuantityPerUnit = "48 pieces", .UnitPrice = 32.8D, .UnitsInStock = 0, .UnitsOnOrder = 0, .ReorderLevel = 0, .Discontinued = True})
retVal.Add(New Product With {.ProductID = 54, .ProductName = "Tourtière", .CategoryID = 6, .QuantityPerUnit = "16 pies", .UnitPrice = 7.45D, .UnitsInStock = 21, .UnitsOnOrder = 0, .ReorderLevel = 10, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 55, .ProductName = "Pâté chinois", .CategoryID = 6, .QuantityPerUnit = "24 boxes x 2 pies", .UnitPrice = 24D, .UnitsInStock = 115, .UnitsOnOrder = 0, .ReorderLevel = 20, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 28, .ProductName = "Rössle Sauerkraut", .CategoryID = 7, .QuantityPerUnit = "25 - 825 g cans", .UnitPrice = 45.6D, .UnitsInStock = 26, .UnitsOnOrder = 0, .ReorderLevel = 0, .Discontinued = True})
retVal.Add(New Product With {.ProductID = 7, .ProductName = "Uncle Bob's Organic Dried Pears", .CategoryID = 7, .QuantityPerUnit = "12 - 1 lb pkgs.", .UnitPrice = 30D, .UnitsInStock = 15, .UnitsOnOrder = 0, .ReorderLevel = 10, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 14, .ProductName = "Tofu", .CategoryID = 7, .QuantityPerUnit = "40 - 100 g pkgs.", .UnitPrice = 23.25D, .UnitsInStock = 35, .UnitsOnOrder = 0, .ReorderLevel = 0, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 45, .ProductName = "Rogede sild", .CategoryID = 8, .QuantityPerUnit = "1k pkg.", .UnitPrice = 9.5D, .UnitsInStock = 5, .UnitsOnOrder = 70, .ReorderLevel = 15, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 46, .ProductName = "Spegesild", .CategoryID = 8, .QuantityPerUnit = "4 - 450 g glasses", .UnitPrice = 12D, .UnitsInStock = 95, .UnitsOnOrder = 0, .ReorderLevel = 0, .Discontinued = False})
retVal.Add(New Product With {.ProductID = 58, .ProductName = "Escargots de Bourgogne", .CategoryID = 8, .QuantityPerUnit = "24 pieces", .UnitPrice = 13.25D, .UnitsInStock = 62, .UnitsOnOrder = 0, .ReorderLevel = 20, .Discontinued = False})
Return retVal
End Function
Private Shared Function CreateCategoriesAndProducts() As List(Of Category)
Dim retVal As List(Of Category) = CreateCategories()
Dim tempProducts As List(Of Product) = CreateProducts()
Dim parentCategory As Category = Nothing
For Each p As Product In tempProducts
If parentCategory Is Nothing OrElse parentCategory.CategoryID <> p.CategoryID Then
parentCategory = retVal.Find(Function(category) category.CategoryID = p.CategoryID)
End If
parentCategory.Products.Add(p)
Next
Return retVal
End Function
#End Region
#End Region
#Region "public members"
#Region "public properties"
Public Shared ReadOnly Property Categories() As List(Of Category)
Get
If m_categories Is Nothing Then
m_categories = CreateCategories()
End If
Return m_categories
End Get
End Property
Public Shared ReadOnly Property Products() As List(Of Product)
Get
If m_products Is Nothing Then
m_products = CreateProducts()
End If
Return m_products
End Get
End Property
Public Shared ReadOnly Property CategoriesAndProducts() As List(Of Category)
Get
If m_categoriesAndProducts Is Nothing Then
m_categoriesAndProducts = CreateCategoriesAndProducts()
End If
Return m_categoriesAndProducts
End Get
End Property
#End Region
#End Region
End Class
Public Class Category
Implements INotifyPropertyChanged
#Region "private fields"
Private m_categoryID As Integer
Private m_categoryName As String
Private m_description As String
Private m_products As List(Of Product)
#End Region
#Region "public properties"
Public Property CategoryID() As Integer
Get
Return Me.m_categoryID
End Get
Set(ByVal value As Integer)
If Me.m_categoryID <> value Then
Me.m_categoryID = value
OnPropertyChanged("CategoryID")
End If
End Set
End Property
Public Property CategoryName() As String
Get
Return Me.m_categoryName
End Get
Set(ByVal value As String)
If Me.m_categoryName <> value Then
Me.m_categoryName = value
OnPropertyChanged("CategoryName")
End If
End Set
End Property
Public Property Description() As String
Get
Return Me.m_description
End Get
Set(ByVal value As String)
If Me.m_description <> value Then
Me.m_description = value
OnPropertyChanged("Description")
End If
End Set
End Property
Public ReadOnly Property Products() As List(Of Product)
Get
If m_products Is Nothing Then
m_products = New List(Of Product)()
End If
Return Me.m_products
End Get
End Property
#End Region
#Region "INotifyPropertyChanged Members"
Public Event PropertyChanged(ByVal sender As Object, ByVal e As PropertyChangedEventArgs) Implements INotifyPropertyChanged.PropertyChanged
Protected Overridable Sub OnPropertyChanged(ByVal propertyName As String)
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(propertyName))
End Sub
#End Region
End Class
Public Class Product
Implements INotifyPropertyChanged
#Region "INotifyPropertyChanged Members"
Public Event PropertyChanged(ByVal sender As Object, ByVal e As PropertyChangedEventArgs) Implements INotifyPropertyChanged.PropertyChanged
Protected Overridable Sub OnPropertyChanged(ByVal propertyName As String)
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(propertyName))
End Sub
#End Region
#Region "private members"
Private m_productID As Integer
Private m_productName As String
Private m_categoryID As Integer
Private m_quantityPerUnit As String
Private m_unitPrice As Decimal
Private m_unitsInStock As Integer
Private m_unitsOnOrder As Integer
Private m_reorderLevel As Integer
Private m_discontinued As Boolean
#End Region
#Region "public properties"
Public Property ProductID() As Integer
Get
Return Me.m_productID
End Get
Set(ByVal value As Integer)
If Me.m_productID <> value Then
Me.m_productID = value
OnPropertyChanged("ProductID")
End If
End Set
End Property
Public Property ProductName() As String
Get
Return Me.m_productName
End Get
Set(ByVal value As String)
If Me.m_productName <> value Then
Me.m_productName = value
OnPropertyChanged("ProductName")
End If
End Set
End Property
Public Property CategoryID() As Integer
Get
Return Me.m_categoryID
End Get
Set(ByVal value As Integer)
If Me.m_categoryID <> value Then
Me.m_categoryID = value
OnPropertyChanged("CategoryID")
End If
End Set
End Property
Public Property QuantityPerUnit() As String
Get
Return Me.m_quantityPerUnit
End Get
Set(ByVal value As String)
If Me.m_quantityPerUnit <> value Then
Me.m_quantityPerUnit = value
OnPropertyChanged("QuantityPerUnit")
End If
End Set
End Property
Public Property UnitPrice() As Decimal
Get
Return Me.m_unitPrice
End Get
Set(ByVal value As Decimal)
If value < 0 Then
Throw New Exception("Negative numbers are not allowed")
End If
Me.m_unitPrice = value
OnPropertyChanged("UnitPrice")
End Set
End Property
Public Property UnitsInStock() As Integer
Get
Return Me.m_unitsInStock
End Get
Set(ByVal value As Integer)
If value < 0 Then
Throw New Exception("Negative numbers are not allowed")
End If
Me.m_unitsInStock = value
OnPropertyChanged("UnitsInStock")
End Set
End Property
Public Property UnitsOnOrder() As Integer
Get
Return Me.m_unitsOnOrder
End Get
Set(ByVal value As Integer)
If Me.m_unitsOnOrder <> value Then
Me.m_unitsOnOrder = value
OnPropertyChanged("UnitsOnOrder")
End If
End Set
End Property
Public Property ReorderLevel() As Integer
Get
Return Me.m_reorderLevel
End Get
Set(ByVal value As Integer)
If Me.m_reorderLevel <> value Then
Me.m_reorderLevel = value
OnPropertyChanged("ReorderLevel")
End If
End Set
End Property
Public Property Discontinued() As Boolean
Get
Return Me.m_discontinued
End Get
Set(ByVal value As Boolean)
If Me.m_discontinued <> value Then
Me.m_discontinued = value
OnPropertyChanged("Discontinued")
End If
End Set
End Property
#End Region
End Class
End Namespace
In C#:
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System;
using System.Collections.Generic;
namespace IGDocumentation
{
public class DataUtil
{
#region private members
#region private fields
private static List<Category> categories;
private static List<Product> products;
private static List<Category> categoriesAndProducts;
#endregion
#region private methods
private static List<Category> CreateCategories()
{
return new List<Category>
{
new Category
{
CategoryID = 1,
CategoryName = "Beverages",
Description = "Soft drinks, coffees, teas, beers, and ales"
},
new Category
{
CategoryID = 2,
CategoryName = "Condiments",
Description = "Sweet and savory sauces, relishes, spreads, and seasonings"
},
new Category
{
CategoryID = 3,
CategoryName = "Confections",
Description = "Desserts, candies, and sweet breads",
},
new Category
{
CategoryID = 4,
CategoryName = "Dairy Product",
Description = "Cheeses",
},
new Category
{
CategoryID = 5,
CategoryName = "Grains/Cereals",
Description = "Breads, crackers, pasta, and cereal",
},
new Category
{
CategoryID = 6,
CategoryName = "Meat/Poultry",
Description = "Prepared meats",
},
new Category
{
CategoryID = 7,
CategoryName = "Produce",
Description = "Dried fruit and bean curd",
},
new Category
{
CategoryID = 8,
CategoryName = "Seafood",
Description = "Seaweed and fish",
}
};
}
private static List<Product> CreateProducts()
{
return new List<Product>
{
new Product
{
ProductID = 1,
ProductName = "Chai",
CategoryID = 1,
QuantityPerUnit = "10 boxes x 20 bags",
UnitPrice = 18.0000m,
UnitsInStock = 39,
UnitsOnOrder = 0,
ReorderLevel = 10,
Discontinued = false
},
new Product
{
ProductID = 2,
ProductName = "Chang",
CategoryID = 1,
QuantityPerUnit = "24 - 12 oz bottles",
UnitPrice = 19.0000m,
UnitsInStock = 17,
UnitsOnOrder = 40,
ReorderLevel = 25,
Discontinued = false
},
new Product
{
ProductID = 24,
ProductName = "Guaraná Fantástica",
CategoryID = 1,
QuantityPerUnit = "12 - 355 ml cans",
UnitPrice = 4.5000m,
UnitsInStock = 20,
UnitsOnOrder = 0,
ReorderLevel = 0,
Discontinued = true
},
new Product
{
ProductID = 77,
ProductName = "Original Frankfurter grüne Soße",
CategoryID = 2,
QuantityPerUnit = "12 boxes",
UnitPrice = 13.0000m,
UnitsInStock = 32,
UnitsOnOrder = 0,
ReorderLevel = 15,
Discontinued = false
},
new Product
{
ProductID = 61,
ProductName = "Sirop d'érable",
CategoryID = 2,
QuantityPerUnit = "24 - 500 ml bottles",
UnitPrice = 28.5000m,
UnitsInStock = 113,
UnitsOnOrder = 0,
ReorderLevel = 25,
Discontinued = false
},
new Product
{
ProductID = 63,
ProductName = "Vegie-spread",
CategoryID = 2,
QuantityPerUnit = "15 - 625 g jars",
UnitPrice = 43.9000m,
UnitsInStock = 24,
UnitsOnOrder = 0,
ReorderLevel = 5,
Discontinued = false
},
new Product
{
ProductID = 16,
ProductName = "Pavlova",
CategoryID = 3,
QuantityPerUnit = "32 - 500 g boxes",
UnitPrice = 17.4500m,
UnitsInStock = 29,
UnitsOnOrder = 0,
ReorderLevel = 10,
Discontinued = false
},
new Product
{
ProductID = 19,
ProductName = "Teatime Chocolate Biscuits",
CategoryID = 3,
QuantityPerUnit = "10 boxes x 12 pieces",
UnitPrice = 9.2000m,
UnitsInStock = 25,
UnitsOnOrder = 0,
ReorderLevel = 5,
Discontinued = false
},
new Product
{
ProductID = 20,
ProductName = "Sir Rodney's Marmalade",
CategoryID = 3,
QuantityPerUnit = "30 gift boxes",
UnitPrice = 81.0000m,
UnitsInStock = 40,
UnitsOnOrder = 0,
ReorderLevel = 0,
Discontinued = false
},
new Product
{
ProductID = 69,
ProductName = "Gudbrandsdalsost",
CategoryID = 4,
QuantityPerUnit = "10 kg pkg.",
UnitPrice = 36.0000m,
UnitsInStock = 26,
UnitsOnOrder = 0,
ReorderLevel = 15,
Discontinued = false
},
new Product
{
ProductID = 71,
ProductName = "Flotemysost",
CategoryID = 4,
QuantityPerUnit = "10 - 500 g pkgs.",
UnitPrice = 21.5000m,
UnitsInStock = 26,
UnitsOnOrder = 0,
ReorderLevel = 0,
Discontinued = false
},
new Product
{
ProductID = 72,
ProductName = "Mozzarella di Giovanni",
CategoryID = 4,
QuantityPerUnit = "24 - 200 g pkgs.",
UnitPrice = 34.8000m,
UnitsInStock = 14,
UnitsOnOrder = 0,
ReorderLevel = 0,
Discontinued = false
},
new Product
{
ProductID = 22,
ProductName = "Gustaf's Knäckebröd",
CategoryID = 5,
QuantityPerUnit = "24 - 500 g pkgs.",
UnitPrice = 21.0000m,
UnitsInStock = 104,
UnitsOnOrder = 0,
ReorderLevel = 25,
Discontinued = false
},
new Product
{
ProductID = 23,
ProductName = "Tunnbröd",
CategoryID = 5,
QuantityPerUnit = "12 - 250 g pkgs.",
UnitPrice = 9.0000m,
UnitsInStock = 61,
UnitsOnOrder = 0,
ReorderLevel = 25,
Discontinued = false
},
new Product
{
ProductID = 53,
ProductName = "Perth Pasties",
CategoryID = 6,
QuantityPerUnit = "48 pieces",
UnitPrice = 32.8000m,
UnitsInStock = 0,
UnitsOnOrder = 0,
ReorderLevel = 0,
Discontinued = true
},
new Product
{
ProductID = 54,
ProductName = "Tourtière",
CategoryID = 6,
QuantityPerUnit = "16 pies",
UnitPrice = 7.4500m,
UnitsInStock = 21,
UnitsOnOrder = 0,
ReorderLevel = 10,
Discontinued = false
},
new Product
{
ProductID = 55,
ProductName = "Pâté chinois",
CategoryID = 6,
QuantityPerUnit = "24 boxes x 2 pies",
UnitPrice = 24.0000m,
UnitsInStock = 115,
UnitsOnOrder = 0,
ReorderLevel = 20,
Discontinued = false
},
new Product
{
ProductID = 28,
ProductName = "Rössle Sauerkraut",
CategoryID = 7,
QuantityPerUnit = "25 - 825 g cans",
UnitPrice = 45.6000m,
UnitsInStock = 26,
UnitsOnOrder = 0,
ReorderLevel = 0,
Discontinued = true
},
new Product
{
ProductID = 7,
ProductName = "Uncle Bob's Organic Dried Pears",
CategoryID = 7,
QuantityPerUnit = "12 - 1 lb pkgs.",
UnitPrice = 30.0000m,
UnitsInStock = 15,
UnitsOnOrder = 0,
ReorderLevel = 10,
Discontinued = false
},
new Product
{
ProductID = 14,
ProductName = "Tofu",
CategoryID = 7,
QuantityPerUnit = "40 - 100 g pkgs.",
UnitPrice = 23.2500m,
UnitsInStock = 35,
UnitsOnOrder = 0,
ReorderLevel = 0,
Discontinued = false
},
new Product
{
ProductID = 45,
ProductName = "Rogede sild",
CategoryID = 8,
QuantityPerUnit = "1k pkg.",
UnitPrice = 9.5000m,
UnitsInStock = 5,
UnitsOnOrder = 70,
ReorderLevel = 15,
Discontinued = false
},
new Product
{
ProductID = 46,
ProductName = "Spegesild",
CategoryID = 8,
QuantityPerUnit = "4 - 450 g glasses",
UnitPrice = 12.0000m,
UnitsInStock = 95,
UnitsOnOrder = 0,
ReorderLevel = 0,
Discontinued = false
},
new Product
{
ProductID = 58,
ProductName = "Escargots de Bourgogne",
CategoryID = 8,
QuantityPerUnit = "24 pieces",
UnitPrice = 13.2500m,
UnitsInStock = 62,
UnitsOnOrder = 0,
ReorderLevel = 20,
Discontinued = false
}
};
}
private static List<Category> CreateCategoriesAndProducts()
{
List<Category> retVal = CreateCategories();
List<Product> tempProducts = CreateProducts();
Category parentCategory = null;
foreach (Product p in tempProducts)
{
if (parentCategory == null || parentCategory.CategoryID != p.CategoryID)
{
parentCategory = retVal.First<Category>(category => category.CategoryID == p.CategoryID);
}
parentCategory.Products.Add(p);
}
return retVal;
}
#endregion
#endregion
#region public members
#region public properties
public static List<Category> Categories
{
get
{
if (categories == null)
categories = CreateCategories();
return categories;
}
}
public static List<Product> Products
{
get
{
if (products == null)
products = CreateProducts();
return products;
}
}
public static List<Category> CategoriesAndProducts
{
get
{
if (categoriesAndProducts == null)
categoriesAndProducts = CreateCategoriesAndProducts();
return categoriesAndProducts;
}
}
#endregion
#region Public Methods
public static List<Product> GetProducts()
{
return Products;
}
public static List<Category> GetCategories()
{
return Categories;
}
#endregion
#endregion
}
public class Category : INotifyPropertyChanged
{
#region private fields
private int categoryID;
private string categoryName;
private string description;
private List<Product> products;
#endregion
#region public properties
public int CategoryID
{
get
{
return this.categoryID;
}
set
{
if (this.categoryID != value)
{
this.categoryID = value;
OnPropertyChanged("CategoryID");
}
}
}
public string CategoryName
{
get
{
return this.categoryName;
}
set
{
if (this.categoryName != value)
{
this.categoryName = value;
OnPropertyChanged("CategoryName");
}
}
}
public string Description
{
get
{
return this.description;
}
set
{
if (this.description != value)
{
this.description = value;
OnPropertyChanged("Description");
}
}
}
public List<Product> Products
{
get
{
if (products == null)
{
products = new List<Product>();
}
return this.products;
}
}
#endregion
#region INotifyPropertyChanged Members
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
}
public class Product : INotifyPropertyChanged
{
#region INotifyPropertyChanged Members
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
#region private members
private int productID;
private string productName;
private int categoryID;
private string quantityPerUnit;
private decimal unitPrice;
private int unitsInStock;
private int unitsOnOrder;
private int reorderLevel;
private bool discontinued;
#endregion
#region public properties
public int ProductID
{
get
{
return this.productID;
}
set
{
if (this.productID != value)
{
this.productID = value;
OnPropertyChanged("ProductID");
}
}
}
public string ProductName
{
get
{
return this.productName;
}
set
{
if (this.productName != value)
{
this.productName = value;
OnPropertyChanged("ProductName");
}
}
}
public int CategoryID
{
get
{
return this.categoryID;
}
set
{
if (this.categoryID != value)
{
this.categoryID = value;
OnPropertyChanged("CategoryID");
}
}
}
public string QuantityPerUnit
{
get
{
return this.quantityPerUnit;
}
set
{
if (this.quantityPerUnit != value)
{
this.quantityPerUnit = value;
OnPropertyChanged("QuantityPerUnit");
}
}
}
public decimal UnitPrice
{
get
{
return this.unitPrice;
}
set
{
if (value < 0)
throw new Exception("Negative numbers are not allowed.");
this.unitPrice = value;
OnPropertyChanged("UnitPrice");
}
}
public int UnitsInStock
{
get
{
return this.unitsInStock;
}
set
{
if (value < 0)
throw new Exception("Negative numbers are not allowed.");
this.unitsInStock = value;
OnPropertyChanged("UnitsInStock");
}
}
public int UnitsOnOrder
{
get
{
return this.unitsOnOrder;
}
set
{
if (this.unitsOnOrder != value)
{
this.unitsOnOrder = value;
OnPropertyChanged("UnitsOnOrder");
}
}
}
public int ReorderLevel
{
get
{
return this.reorderLevel;
}
set
{
if (this.reorderLevel != value)
{
this.reorderLevel = value;
OnPropertyChanged("ReorderLevel");
}
}
}
public bool Discontinued
{
get
{
return this.discontinued;
}
set
{
if (this.discontinued != value)
{
this.discontinued = value;
OnPropertyChanged("Discontinued");
}
}
}
#endregion
}
}