Freigeben über


Task-Klasse

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

Vererbungshierarchie

System. . :: . .Object
  Microsoft.SqlServer.Dts.Runtime. . :: . .DtsObject
    Microsoft.SqlServer.Dts.Runtime..::..Task
      Mehr…

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

Syntax

'Declaration
Public MustInherit Class Task _
    Inherits DtsObject _
    Implements IDTSManagedTask
'Usage
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

Der Task-Typ macht folgende Elemente verfügbar.

Konstruktoren

  Name Beschreibung
Geschützte Methode Task Initializes a new instance of the Task class.

Zum Anfang

Eigenschaften

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

Zum Anfang

Methoden

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

Zum Anfang

Hinweise

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.

Beispiele

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

Threadsicherheit

Alle öffentlichen static (Shared in Visual Basic)-Elemente dieses Typs sind Threadsicher. Für Instanzelemente wird die Threadsicherheit nicht gewährleistet.

Vererbungshierarchie

System. . :: . .Object
  Microsoft.SqlServer.Dts.Runtime. . :: . .DtsObject
    Microsoft.SqlServer.Dts.Runtime..::..Task
      Microsoft.DataTransformationServices.Tasks.DTSProcessingTask. . :: . .ASTaskBase
      Microsoft.SqlServer.Dts.Tasks.ActiveXScriptTask. . :: . .ActiveXScriptTask
      Microsoft.SqlServer.Dts.Tasks.BulkInsertTask. . :: . .BulkInsertTask
      Microsoft.SqlServer.Dts.Tasks.DataProfilingTask. . :: . .DataProfilingTask
      Microsoft.SqlServer.Dts.Tasks.DMQueryTask. . :: . .DMQueryTask
      Microsoft.SqlServer.Dts.Tasks.Exec80PackageTask. . :: . .Exec80PackageTask
      Microsoft.SqlServer.Dts.Tasks.ExecuteProcess. . :: . .ExecuteProcess
      Microsoft.SqlServer.Dts.Tasks.ExecuteSQLTask. . :: . .ExecuteSQLTask
      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