Knight Data Access Layer
Update(String,String,Object,IEnumerable<Object>) Method
Example 




KellermanSoftware.NetDataAccessLayer Namespace > IDataHelper Interface > Update Method : Update(String,String,Object,IEnumerable<Object>) Method
The table to update
The name of the primary key
The value of the primary key
What to update
Update a record in the database by the primary key
Syntax
Overloads Function Update( _
   ByVal tableName As String, _
   ByVal primaryKey As String, _
   ByVal primaryKeyValue As Object, _
   ByVal nameValueParameters As IEnumerable(Of Object) _
) As Integer
Dim instance As IDataHelper
Dim tableName As String
Dim primaryKey As String
Dim primaryKeyValue As Object
Dim nameValueParameters As IEnumerable(Of Object)
Dim value As Integer
 
value = instance.Update(tableName, primaryKey, primaryKeyValue, nameValueParameters)

Parameters

tableName
The table to update
primaryKey
The name of the primary key
primaryKeyValue
The value of the primary key
nameValueParameters
What to update

Return Value

The number of records affected
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==";
 
//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);
 
//Update a record in the database by the primary key
int result = db.Update("Person", "PersonId", 1, new object[] {"FirstName", "John", "LastName", "Smith" });
 
//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=="
 
'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)
 
'Update a record in the database by the primary key
Dim result As Integer = db.Update("Person", "PersonId", 1, new object[] {"FirstName", "John", "LastName", "Smith" })
 
'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
Overload List