Knight Data Access Layer
Delete(String,Dictionary<String,Object>) Method
Example 




KellermanSoftware.NetDataAccessLayer Namespace > IDataHelper Interface > Delete Method : Delete(String,Dictionary<String,Object>) Method
The table name
The parameters for the where clause
Delete a record where all parameters are equal
Syntax
Overloads Function Delete( _
   ByVal tableName As String, _
   ByVal parameters As Dictionary(Of String,Object) _
) As Integer
Dim instance As IDataHelper
Dim tableName As String
Dim parameters As Dictionary(Of String,Object)
Dim value As Integer
 
value = instance.Delete(tableName, parameters)

Parameters

tableName
The table name
parameters
The parameters for the where clause

Return Value

Number of records deleted
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);
 
Dictionary<string, object> parameters = new Dictionary<string, object>();
 
parameters.Add("FirstName","John");
parameters.Add("LastName","Smith");
 
int result = db.Delete("Persons", parameters);
 
//This is the number of records deleted
Console.WriteLine(result);
 
//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 parameters As New Dictionary(Of String, Object)()
 
parameters.Add("FirstName","John")
parameters.Add("LastName","Smith")
 
Dim result As Integer = db.Delete("Persons", parameters)
 
'This is the number of records deleted
Console.WriteLine(result)
 
'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