發行項
04/02/2012

Task 類別

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

繼承階層

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

命名空間： Microsoft.SqlServer.Dts.Runtime
組件： Microsoft.SqlServer.ManagedDTS (在 Microsoft.SqlServer.ManagedDTS.dll 中)

語法

'宣告
Public MustInherit Class Task _
    Inherits DtsObject _
    Implements IDTSManagedTask
'用途
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

Task 型別公開下列成員。

建構函式

	名稱	說明
	Task	Initializes a new instance of the Task class.

上層

屬性

	名稱	說明
	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.

上層

方法

	名稱	說明
	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. (繼承自 DtsObject。)
	Execute	Runs the task.
	Finalize	(繼承自 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. (繼承自 DtsObject。)
	GetType	(繼承自 Object。)
	InitializeTask	Initializes the properties associated with the task. This method is called by the runtime and is not used in code.
	MemberwiseClone	(繼承自 Object。)
	ToString	(繼承自 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.

上層

備註

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.

範例

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

執行緒安全性

這個型別的任何公用 static (在 Visual Basic 中為 Shared) 成員都是執行緒安全的。並不是所有的執行個體成員都保證可以用於所有的執行緒。

請參閱

參考

Microsoft.SqlServer.Dts.Runtime 命名空間

繼承階層

共用方式為

Task 類別

繼承階層

語法

建構函式

屬性

方法

備註

範例

執行緒安全性

請參閱

參考

繼承階層

其他資源