Articolo
04/01/2012

Classe Task

Defines an abstract class that implements the methods and properties common to all tasks in Integration Services.

Gerarchia di ereditarietà

System. . :: . .Object
  Microsoft.SqlServer.Dts.Runtime. . :: . .DtsObject
    Microsoft.SqlServer.Dts.Runtime..::..Task
      Altro...

Spazio dei nomi Microsoft.SqlServer.Dts.Runtime
Assembly: Microsoft.SqlServer.ManagedDTS (in Microsoft.SqlServer.ManagedDTS.dll)

Sintassi

'Dichiarazione
Public MustInherit Class Task _
    Inherits DtsObject _
    Implements IDTSManagedTask
'Utilizzo
Dim instance As Task

public abstract class Task : DtsObject, 
    IDTSManagedTask

public ref class Task abstract : public DtsObject, 
    IDTSManagedTask

[<AbstractClassAttribute>]
type Task =  
    class
        inherit DtsObject
        interface IDTSManagedTask
    end

public abstract class Task extends DtsObject implements IDTSManagedTask

Nel tipo Task sono esposti i membri seguenti.

Costruttori

	Nome	Descrizione
	Task	Initializes a new instance of the Task class.

In alto

Proprietà

	Nome	Descrizione
	ExecutionValue	Returns a user-defined object. This field is read-only.
	Version	* Member deprecated; see Remarks. * Returns the version of the task. This property is read-only.

In alto

Metodi

	Nome	Descrizione
	CanUpdate	* Member deprecated; see Remarks. * A Boolean that indicates whether the new package XML can update the old package XML.
	Equals	Determines whether two object instances are equal. Ereditato da DtsObject.
	Execute	Runs the task.
	Finalize	Ereditato da Object.
	GetConnectionID	Gets a String containing the ID of the connection.
	GetConnectionName	Gets a String containing the name of the connection.
	GetHashCode	Returns the hash code for this instance. Ereditato da DtsObject.
	GetType	Ereditato da Object.
	InitializeTask	Initializes the properties associated with the task. This method is called by the runtime and is not used in code.
	MemberwiseClone	Ereditato da Object.
	ToString	Ereditato da Object.
	Update	* Member deprecated; see Remarks. * This method updates the old package XML with the new package XML if CanUpdate is set to true.
	Validate	Verifies that the component is properly configured.

In alto

Osservazioni

A package consists of one or more tasks. These tasks define units of work that are performed as part of copying and transforming data, communicating with other processes, and performing database management functions.

Inherits from DtsObject and IDTSManagedTask.

Esempi

The following code example is a very simple task implementation for a custom task that inherits from Task.

using System;
using Microsoft.SqlServer.Dts.Runtime;

class MyTask : Task
{
    private int m_value = 123;

    public override DTExecResult Execute(Connections connections,
Variables variables, IDTSEvents events,
IDTSLogging log, int lastExecResult, DtsTransaction txn)
    {
        return m_value;
    }
}

Imports System
Imports Microsoft.SqlServer.Dts.Runtime
 
Class MyTask
    Inherits Task
    Private m_value As Integer =  123 
    Public Overrides DTExecResult Property connections,() As Execute(Connections
    End Property
Variables variables, IDTSEvents events,
IDTSLogging log,int Function txn)() As lastExecResult,DtsTransaction
        Return m_value
End Function
End Class

Protezione dei thread

I membri static (Shared in Visual Basic) pubblici di questo tipo sono affidabili. Non è invece garantita la sicurezza dei membri dell'istanza.

Vedere anche

Riferimento

Spazio dei nomi Microsoft.SqlServer.Dts.Runtime

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Classe Task

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Sintassi

Costruttori

Proprietà

Metodi

Osservazioni

Esempi

Protezione dei thread

Vedere anche

Riferimento

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