ExpressionTask 類別

Contains the members used to configure and run an Expression task.

繼承階層

System.Object
  Microsoft.SqlServer.Dts.Runtime.DtsObject
    Microsoft.SqlServer.Dts.Runtime.Task
      Microsoft.SqlServer.Dts.Tasks.ExpressionTask.ExpressionTask

命名空間：  Microsoft.SqlServer.Dts.Tasks.ExpressionTask
組件：  Microsoft.SqlServer.ExpressionTask (在 Microsoft.SqlServer.ExpressionTask.dll 中)

語法

'宣告
<GuidAttribute("2EE7D9A9-DA39-4F6F-A1E4-804F1FBC544C")> _
Public Class ExpressionTask _
    Inherits Task _
    Implements IDTSBreakpointSite, IDTSSuspend, IDTSComponentPersist
'用途
Dim instance As ExpressionTask

[GuidAttribute("2EE7D9A9-DA39-4F6F-A1E4-804F1FBC544C")]
public class ExpressionTask : Task, 
    IDTSBreakpointSite, IDTSSuspend, IDTSComponentPersist

[GuidAttribute(L"2EE7D9A9-DA39-4F6F-A1E4-804F1FBC544C")]
public ref class ExpressionTask : public Task, 
    IDTSBreakpointSite, IDTSSuspend, IDTSComponentPersist

[<GuidAttribute("2EE7D9A9-DA39-4F6F-A1E4-804F1FBC544C")>]
type ExpressionTask =  
    class 
        inherit Task 
        interface IDTSBreakpointSite 
        interface IDTSSuspend 
        interface IDTSComponentPersist 
    end

public class ExpressionTask extends Task implements IDTSBreakpointSite, IDTSSuspend, IDTSComponentPersist

ExpressionTask 型別公開下列成員。

建構函式

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

上層

屬性

	名稱	說明
	DebugMode	Gets or sets a Boolean that indicates whether a task should determine whether breakpoints are enabled.
	ExecutionValue	Returns the result of the task execution. (覆寫 Task.ExecutionValue。)
	Expression	Gets or sets the expression to be executed by the task.
	SuspendRequired	Gets or sets a Boolean that indicates whether tasks should suspend when they encounter a breakpoint. This value is set by the runtime engine for tasks and containers when a breakpoint is encountered.
	Version	*** Member deprecated; see Remarks. ***    Returns the version of the task. This property is read-only. (繼承自 Task。)

上層

方法

	名稱	說明
	AcceptBreakpointManager	Called by the run-time engine when a task or container is created, and is passed a BreakpointManager to enable the task to create, remove, and check the status of breakpoints. This method is called by the runtime and is not used in code.
	CanUpdate	*** Member deprecated; see Remarks. ***    A Boolean that indicates whether the new package XML can update the old package XML. (繼承自 Task。)
	Equals	Determines whether two object instances are equal. (繼承自 DtsObject。)
	Execute	Runs the task. (覆寫 Task.Execute(Connections, VariableDispenser, IDTSComponentEvents, IDTSLogging, Object)。)
	Finalize	(繼承自 Object。)
	GetConnectionID	Gets a String containing the ID of the connection. (繼承自 Task。)
	GetConnectionName	Gets a String containing the name of the connection. (繼承自 Task。)
	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. (繼承自 Task。)
	LoadFromXML	Loads the definition of the task, in XML format, from the XML definition of the package.
	MemberwiseClone	(繼承自 Object。)
	ResumeExecution	Resumes execution of the task after pausing. The task or container is resumed by the runtime engine.
	SaveToXML	Saves the definition of the task, in XML format, into the XML definition of the package.
	SuspendExecution	Indicates that the executable needs to suspend. This method is called by the runtime engine.
	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. (繼承自 Task。)
	Validate	Verifies that the task is properly configured. (覆寫 Task.Validate(Connections, VariableDispenser, IDTSComponentEvents, IDTSLogging)。)
	ValidateExpression	Verifies that the expression is properly configured.

上層

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.Tasks.ExpressionTask 命名空間