DeleteWithChildren<T>(Object) Method

Visual Basic (Declaration)
Visual Basic (Usage)
C#
Managed Extensions for C++
C++/CLI

Overloads Function DeleteWithChildren(Of T As {Class, New})( _
   ByVal primaryKey As Object _
) As Integer

Dim instance As IDataHelper
Dim primaryKey As Object
Dim value As Integer
 
value = instance.DeleteWithChildren(Of T)(primaryKey)

int DeleteWithChildren<T>( 
   object primaryKey
)
where T: class, new()

int DeleteWithChildren<T>( 
   Object* primaryKey
) 
where T: ref class, gcnew()

int DeleteWithChildrengeneric<typename T>
( 
   Object^ primaryKey
) 
where T: ref class, gcnew()

Parameters

primaryKey: The primary key of the parent record

Type Parameters

T: Generic class type

Return Value

Number of records deleted

C#

//Get the current thread static safe instance of the helper
IDataHelper db = DataHelper.SessionFactory();
 
//Specify User Name and License Key from the receipt, leave blank for trial mode
//db.UserName = "John Smith 1234";
//db.LicenseKey = "asdfl219==";
 
//Open the database connection
db.OpenConnection();
 
//Build a record to save to the database
Order order = new Order();
order.Buyer = new Person();
order.Buyer.FirstName = "John";
order.Buyer.LastName = "Smith";
order.Buyer.DateCreated = DateTime.Now;
order.OrderDetails = new List<OrderDetail>();
 
OrderDetail detail1 = new OrderDetail();
detail1.Item = new Product();
detail1.Item.ProductName = "Wizard";
detail1.Item.Cost = 29.98M;
detail1.Quantity = 2;
detail1.Order = order;
order.OrderDetails.Add(detail1);
 
OrderDetail detail2 = new OrderDetail();
detail2.Item = new Product();
detail2.Item.ProductName = ".NET Caching Library";
detail2.Item.Cost = 199.95M;
detail2.Quantity = 1;
detail2.Order = order;
order.OrderDetails.Add(detail2);
 
//Save it
db.SaveWithChildren(order);
 
//Delete it
db.DeleteWithChildren<Order>(order.OrderId);
 
//Close the connection
db.CloseConnection();

VB.NET

'Get the current thread static safe instance of the helper
Dim db As IDataHelper = DataHelper.SessionFactory()
 
'Specify User Name and License Key from the receipt, leave blank for trial mode
'db.UserName = "John Smith 1234"
'db.LicenseKey = "asdfl219=="
 
'Open the database connection
db.OpenConnection()
 
'Build a record to save to the database
Dim order As New Order()
order.Buyer = New Person()
order.Buyer.FirstName = "John"
order.Buyer.LastName = "Smith"
order.Buyer.DateCreated = Date.Now
order.OrderDetails = New List(Of OrderDetail)()
 
Dim detail1 As New OrderDetail()
detail1.Item = New Product()
detail1.Item.ProductName = "Wizard"
detail1.Item.Cost = 29.98D
detail1.Quantity = 2
detail1.Order = order
order.OrderDetails.Add(detail1)
 
Dim detail2 As New OrderDetail()
detail2.Item = New Product()
detail2.Item.ProductName = ".NET Caching Library"
detail2.Item.Cost = 199.95D
detail2.Quantity = 1
detail2.Order = order
order.OrderDetails.Add(detail2)
 
'Save it
db.SaveWithChildren(order)
 
'Delete it
db.DeleteWithChildren(Of Order)(order.OrderId)
 
'Close the connection
db.CloseConnection()

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

IDataHelper Interface
IDataHelper Members
Overload List