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TaskUILifetimeHintAttribute 類別

Defines a task lifetime attribute that specifies how expensive a user interface is to re-create.

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

語法

'宣告
<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple := False)> _
Public NotInheritable Class TaskUILifetimeHintAttribute _
    Inherits Attribute
'用途
Dim instance As TaskUILifetimeHintAttribute

[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = false)]
public sealed class TaskUILifetimeHintAttribute : Attribute

[AttributeUsageAttribute(AttributeTargets::Class, AllowMultiple = false)]
public ref class TaskUILifetimeHintAttribute sealed : public Attribute

[<SealedAttribute>]
[<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = false)>]
type TaskUILifetimeHintAttribute =  
    class
        inherit Attribute
    end

public final class TaskUILifetimeHintAttribute extends Attribute

備註

In Integration Services, this attribute allows you to specify how expensive it is to recreate a specific user interface. For example, if a user interface displays a drop-down list with only five fields, all obtained from the local computer, the user interface may be fairly fast and inexpensive to process. However, if a drop-down list in a user interface contains information that was gathered from a remote server, or from across a network that was slow, the user interface may be expensive and time-consuming to re-create. To keep the user interface in memory until the package designer is closed, set the TaskUILifetimeHint property to RecreationExpensive. To dispose of the user interface as soon as the user closes the dialog, set the TaskUILifetimeHint property to RecreationInexpensive.

繼承階層

System. . :: . .Object
  System. . :: . .Attribute
    Microsoft.SqlServer.Dts.Runtime.Design..::..TaskUILifetimeHintAttribute

執行緒安全性

這個類型的任何公用static (在 Visual Basic 中為 Shared) 成員都是安全執行緒。不保證任何執行個體成員都可以是安全執行緒。