Knight Data Access Layer
LoadByPrimaryKey<T> Method (IDataHelper)
Example 




KellermanSoftware.NetDataAccessLayer Namespace > IDataHelper Interface : LoadByPrimaryKey<T> Method
Generic class type
The primary key
Load a single record using the primary key
Syntax
Function LoadByPrimaryKey(Of T As {Class, New})( _
   ByVal primaryKey As Object _
) As T
Dim instance As IDataHelper
Dim primaryKey As Object
Dim value As T
 
value = instance.LoadByPrimaryKey(Of T)(primaryKey)
T LoadByPrimaryKey<T>( 
   object primaryKey
)
where T: class, new()
T* LoadByPrimaryKey<T>( 
   Object* primaryKey
) 
where T: ref class, gcnew()
T^ LoadByPrimaryKeygeneric<typename T>
( 
   Object^ primaryKey
) 
where T: ref class, gcnew()

Parameters

primaryKey
The primary key

Type Parameters

T
Generic class type

Return Value

Object
Example
//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==";
 
//Log to the console
db.EnableLogging();
 
//Open the database connection
db.OpenConnection();
 
//Create a new Person to save to the database
Person currentPerson = new Person();
currentPerson.FirstName = "John";
currentPerson.LastName = "Smith";
 
//Save it to the database 
db.Save(currentPerson);
 
Person personCopy = db.LoadOne<Person>(currentPerson.PersonId);           
 
//Close the connection
db.CloseConnection();
'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=="
 
'Log to the console
db.EnableLogging()
 
'Open the database connection
db.OpenConnection()
 
'Create a new Person to save to the database
Dim currentPerson As New Person()
currentPerson.FirstName = "John"
currentPerson.LastName = "Smith"
 
'Save it to the database 
db.Save(currentPerson)
 
Dim personCopy As Person = db.LoadOne(Of Person)(currentPerson.PersonId)
 
'Close the connection
db.CloseConnection()
Requirements

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

See Also

Reference

IDataHelper Interface
IDataHelper Members