Класс ForLoop

Provides a container that defines an iterative workflow in a package, using the for iteration statement.

Иерархия наследования

System. . :: . .Object
  Microsoft.SqlServer.Dts.Runtime. . :: . .DtsObject
    Microsoft.SqlServer.Dts.Runtime. . :: . .Executable
      Microsoft.SqlServer.Dts.Runtime. . :: . .DtsContainer
        Microsoft.SqlServer.Dts.Runtime. . :: . .EventsProvider
          Microsoft.SqlServer.Dts.Runtime..::..ForLoop

Пространство имен:  Microsoft.SqlServer.Dts.Runtime
Сборка:  Microsoft.SqlServer.ManagedDTS (в Microsoft.SqlServer.ManagedDTS.dll)

Синтаксис

'Декларация
Public NotInheritable Class ForLoop _
    Inherits EventsProvider _
    Implements IDTSSequence, IDTSPropertiesProvider, IDTSPackagePath
'Применение
Dim instance As ForLoop

public sealed class ForLoop : EventsProvider, 
    IDTSSequence, IDTSPropertiesProvider, IDTSPackagePath

public ref class ForLoop sealed : public EventsProvider, 
    IDTSSequence, IDTSPropertiesProvider, IDTSPackagePath

[<SealedAttribute>]
type ForLoop =  
    class
        inherit EventsProvider
        interface IDTSSequence
        interface IDTSPropertiesProvider
        interface IDTSPackagePath
    end

public final class ForLoop extends EventsProvider implements IDTSSequence, IDTSPropertiesProvider, IDTSPackagePath

Тип ForLoop обеспечивает доступ к следующим элементам.

Свойства

	Имя	Описание
	AssignExpression	Gets or sets an expression to increment or decrement the loop counter.
	CreationName	Returns the string that is used to create an instance of the DtsContainer object. This property is read-only. (Производный от DtsContainer.)
	DebugMode	Gets or sets a Boolean that indicates whether the DtsContainer object is in debug mode and whether it should fire the OnBreakpointHit event while running. (Производный от DtsContainer.)
	DelayValidation	Gets or sets a Boolean that indicates whether validation of the task is delayed until run time. The default value is false. (Производный от DtsContainer.)
	Description	Gets or sets the description of the DtsContainer object. (Производный от DtsContainer.)
	Disable	A Boolean that indicates if the DtsContainer object is disabled. (Производный от DtsContainer.)
	DisableEventHandlers	Gets or sets a Boolean that indicates whether the event handlers on task are disabled. (Производный от EventsProvider.)
	EvalExpression	Gets or sets the expression that is evaluated on each pass of the loop.
	EventHandlers	Returns a collection of event handler objects. This field is read-only. (Производный от EventsProvider.)
	EventInfos	Returns a collection of EventInfo objects. This field is read-only. (Производный от EventsProvider.)
	Executables	Returns a collection of executable objects that are processed during the ForLoop iteration.
	ExecutionDuration	Returns a value that indicates the amount of time that the container spent in execution, in milliseconds. This property is read-only. (Производный от DtsContainer.)
	ExecutionResult	Returns a value that indicates the success or failure of the execution of the DtsContainer object. (Производный от DtsContainer.)
	ExecutionStatus	Returns a value that indicates the current status of the execution of the DtsContainer object at the time of the call. (Производный от DtsContainer.)
	FailPackageOnFailure	Gets or sets a Boolean that indicates whether the package fails when a child container fails. This property is used on containers, not the package itself. (Производный от DtsContainer.)
	FailParentOnFailure	Gets or sets a Boolean that defines whether the parent container fails when a child container fails. (Производный от DtsContainer.)
	ForcedExecutionValue	If the ForceExecutionValue property is set to true, gets or sets a value that specifies the optional execution value that the package returns. (Производный от DtsContainer.)
	ForceExecutionResult	Gets or sets a DTSForcedExecResult enumeration value that specifies the forced execution result of the container. (Производный от DtsContainer.)
	ForceExecutionValue	Gets or sets a Boolean that indicates whether the execution value of the container should be forced to contain a particular value. (Производный от DtsContainer.)
	ID	Returns the ID, which is a GUID, of the DtsContainer. The value is read-only. (Производный от DtsContainer.)
	InitExpression	Gets or sets an optional initialization expression.
	IsDefaultLocaleID	A Boolean that indicates whether the container uses the default locale. This property is read-only. (Производный от DtsContainer.)
	IsolationLevel	Gets or sets the isolation level of the transaction in the DtsContainer object. (Производный от DtsContainer.)
	LocaleID	Gets or sets an Integer that indicates the Microsoft Win32® localeID to use when the DtsContainer object is executed. (Производный от DtsContainer.)
	LogEntryInfos	Returns a LogEntryInfos object. This property is read-only. (Производный от DtsContainer.)
	LoggingMode	Gets or sets a valid value from the DTSLoggingMode enumeration that indicates the logging mode of the container. (Производный от DtsContainer.)
	LoggingOptions	Returns an object that contains properties that indicates the filtering and logging resource for containers. This property is read-only. (Производный от DtsContainer.)
	MaximumErrorCount	Gets or sets an Integer value that indicates the maximum number of errors that can occur before the DtsContainer object stops running. (Производный от DtsContainer.)
	Name	Gets or sets the name of the DtsContainer. (Производный от DtsContainer.)
	Parent	Returns the parent container. The value is read-only. (Производный от DtsContainer.)
	PrecedenceConstraints	Returns a PrecedenceConstraints collection. This field is read-only.
	Properties	Returns a set of properties for the ForLoop into a DtsProperties collection.
	Site	Инфраструктура. (Производный от DtsContainer.)
	StartTime	Returns the time that the container began execution. This property is read-only. (Производный от DtsContainer.)
	StopTime	Returns the time that the container ended execution. This property is read-only. (Производный от DtsContainer.)
	SuspendRequired	Gets or sets a Boolean that indicates if 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. (Производный от DtsContainer.)
	TransactionOption	Gets or sets a DTSTransactionOption enumeration value that indicates whether the container participates in transactions. (Производный от DtsContainer.)
	VariableDispenser	Returns a VariableDispenser object so variables associated with the container can be locked. (Производный от DtsContainer.)
	Variables	Returns a collection that contains the variables associated with this container. This property is read-only. (Производный от DtsContainer.)

В начало

Методы

	Имя	Описание
	AcceptBreakpointManager	This method is called by the run-time engine when a task or container is created, and passes it a BreakpointManager manager to allow the task to create, remove, and check the status of breakpoints. This method is called by the runtime and is not used in code. (Производный от DtsContainer.)
	Dispose	Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. (Производный от DtsContainer.)
	Equals	Determines whether two object instances are equal. (Производный от DtsObject.)
	Execute	Runs the application, container, or package as part of a package workflow. (Производный от DtsContainer.)
	Finalize	(Производный от Object.)
	GetExpression	Returns a String that contains the expression for the specified property. Null means no expression is assigned.
	GetHashCode	Returns the hash code for this instance. (Производный от DtsObject.)
	GetPackagePath	Returns a String that contains the relative path to the package location.
	GetType	(Производный от Object.)
	LoadFromXML	This method is not callable by your application code. To load a package saved as .xml, use the Application..::..LoadPackage method. (Производный от DtsContainer.)
	MemberwiseClone	(Производный от Object.)
	ResumeExecution	Resumes execution of the task after pausing. The task or container is resumed by the runtime engine. (Производный от DtsContainer.)
	SaveToXML	This method is not callable by your application code. To save a package as .xml, use the Application..::..SaveToXml method. (Производный от DtsContainer.)
	SetExpression	Assigns the specified expression to the property. Specify nullNothingnullptrunitпустая ссылка (Nothing в Visual Basic) to remove an existing expression from the property.
	SetWrappedExecutable	Инфраструктура. (Производный от EventsProvider.)
	SuspendExecution	Called when the executable needs to suspend. This method is called by the runtime engine. (Производный от DtsContainer.)
	ToString	(Производный от Object.)
	Validate	Allows the container to determine if it contains invalid settings that will prevent it from executing successfully. (Производный от DtsContainer.)

В начало

События

	Имя	Описание
	Disposed	Adds an event handler to listen to the Disposed event on the component. (Производный от DtsContainer.)

В начало

Поля

	Имя	Описание
	m_executable	Инфраструктура. (Производный от Executable.)

В начало

Замечания

At run time, the control flow in the ForLoop container is repeated within the overall package control flow. In each iteration of the loop, the ForLoop container evaluates an expression and repeats its workflow until the expression evaluates to false. For more information, see Контейнер «цикл по элементам».

Безопасность многопоточности

Любые открытые статический (Shared в Visual Basic) элементы этого типа потокобезопасны. Потокобезопасность с элементами экземпляров не гарантируется.

См. также

Справочник

Пространство имен Microsoft.SqlServer.Dts.Runtime