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Classe Task

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

Hierarquia de herança

System.Object
  Microsoft.SqlServer.Dts.Runtime.DtsObject
    Microsoft.SqlServer.Dts.Runtime.Task
      Mais...

Namespace:  Microsoft.SqlServer.Dts.Runtime
Assembly:  Microsoft.SqlServer.ManagedDTS (em Microsoft.SqlServer.ManagedDTS.dll)

Sintaxe

'Declaração
Public MustInherit Class Task _
    Inherits DtsObject _
    Implements IDTSManagedTask
'Uso
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

O tipo Task expõe os membros a seguir.

Construtores

  Nome Descrição
Método protegido Task Initializes a new instance of the Task class.

Início

Propriedades

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

Início

Métodos

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

Início

Comentários

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.

Exemplos

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

Segurança de thread

Qualquer membro público static (Shared no Visual Basic) desse tipo é seguro para threads. Não há garantia de que qualquer membro de instância seja seguro para threads.

Consulte também

Referência

Namespace Microsoft.SqlServer.Dts.Runtime

Hierarquia de herança

System.Object
  Microsoft.SqlServer.Dts.Runtime.DtsObject
    Microsoft.SqlServer.Dts.Runtime.Task
      Microsoft.DataTransformationServices.Tasks.DTSProcessingTask.ASTaskBase
      Microsoft.SqlServer.Dts.Tasks.BulkInsertTask.BulkInsertTask
      Microsoft.SqlServer.Dts.Tasks.DataProfilingTask.DataProfilingTask
      Microsoft.SqlServer.Dts.Tasks.DMQueryTask.DMQueryTask
      Microsoft.SqlServer.Dts.Tasks.ExecuteProcess.ExecuteProcess
      Microsoft.SqlServer.Dts.Tasks.ExecuteSQLTask.ExecuteSQLTask
      Microsoft.SqlServer.Dts.Tasks.ExpressionTask.ExpressionTask
      Microsoft.SqlServer.Dts.Tasks.FileSystemTask.FileSystemTask
      Microsoft.SqlServer.Dts.Tasks.FtpTask.FtpTask
      Microsoft.SqlServer.Dts.Tasks.MessageQueueTask.MessageQueueTask
      Microsoft.SqlServer.Dts.Tasks.ScriptTask.ScriptTask
      Microsoft.SqlServer.Dts.Tasks.SendMailTask.SendMailTask
      Microsoft.SqlServer.Dts.Tasks.TransferDatabaseTask.TransferDatabaseTask
      Microsoft.SqlServer.Dts.Tasks.TransferErrorMessagesTask.TransferErrorMessagesTask
      Microsoft.SqlServer.Dts.Tasks.TransferJobsTask.TransferJobsTask
      Microsoft.SqlServer.Dts.Tasks.TransferLoginsTask.TransferLoginsTask
      Microsoft.SqlServer.Dts.Tasks.TransferSqlServerObjectsTask.TransferSqlServerObjectsTask
      Microsoft.SqlServer.Dts.Tasks.TransferStoredProceduresTask.TransferStoredProceduresTask
      Microsoft.SqlServer.Dts.Tasks.WebServiceTask.WebServiceTask
      Microsoft.SqlServer.Dts.Tasks.WmiDataReaderTask.WmiDataReaderTask
      Microsoft.SqlServer.Dts.Tasks.WmiEventWatcherTask.WmiEventWatcherTask
      Microsoft.SqlServer.Dts.Tasks.XMLTask.XMLTask