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ForLoop 类

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

命名空间：  Microsoft.SqlServer.Dts.Runtime
程序集：  Microsoft.SqlServer.ManagedDTS（在 Microsoft.SqlServer.ManagedDTS.dll 中）

语法

声明
Public NotInheritable Class ForLoop _
    Inherits EventsProvider _
    Implements IDTSSequence, IDTSPropertiesProvider, IDTSPackagePath
用法
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

ForLoop 类型公开以下成员。

属性

  名称 说明
公共属性 AssignExpression Gets or sets an expression to increment or decrement the loop counter.
公共属性 CreationName Returns the string that is used to create an instance of the DtsContainer object. This property is read-only. （从 DtsContainer 继承。）
公共属性 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. （从 DtsContainer 继承。）
公共属性 DelayValidation Gets or sets a Boolean that indicates whether validation of the task is delayed until run time. The default value is false. （从 DtsContainer 继承。）
公共属性 Description Gets or sets the description of the DtsContainer object. （从 DtsContainer 继承。）
公共属性 Disable A Boolean that indicates if the DtsContainer object is disabled. （从 DtsContainer 继承。）
公共属性 DisableEventHandlers Gets or sets a Boolean that indicates whether the event handlers on task are disabled. （从 EventsProvider 继承。）
公共属性 EvalExpression Gets or sets the expression that is evaluated on each pass of the loop.
公共属性 EventHandlers Returns a collection of event handler objects. This field is read-only. （从 EventsProvider 继承。）
公共属性 EventInfos Returns a collection of EventInfo objects. This field is read-only. （从 EventsProvider 继承。）
公共属性 Executables Returns a collection of executable objects that are processed during the ForLoop iteration.
公共属性 ExecutionDuration Returns a value that indicates the amount of time that the container spent in execution, in milliseconds. This property is read-only. （从 DtsContainer 继承。）
公共属性 ExecutionResult Returns a value that indicates the success or failure of the execution of the DtsContainer object. （从 DtsContainer 继承。）
公共属性 ExecutionStatus Returns a value that indicates the current status of the execution of the DtsContainer object at the time of the call. （从 DtsContainer 继承。）
公共属性 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. （从 DtsContainer 继承。）
公共属性 FailParentOnFailure Gets or sets a Boolean that defines whether the parent container fails when a child container fails. （从 DtsContainer 继承。）
公共属性 ForcedExecutionValue If the ForceExecutionValue property is set to true, gets or sets a value that specifies the optional execution value that the package returns. （从 DtsContainer 继承。）
公共属性 ForceExecutionResult Gets or sets a DTSForcedExecResult enumeration value that specifies the forced execution result of the container. （从 DtsContainer 继承。）
公共属性 ForceExecutionValue Gets or sets a Boolean that indicates whether the execution value of the container should be forced to contain a particular value. （从 DtsContainer 继承。）
公共属性 ID Returns the ID, which is a GUID, of the DtsContainer. The value is read-only. （从 DtsContainer 继承。）
公共属性 InitExpression Gets or sets an optional initialization expression.
公共属性 IsDefaultLocaleID A Boolean that indicates whether the container uses the default locale. This property is read-only. （从 DtsContainer 继承。）
公共属性 IsolationLevel Gets or sets the isolation level of the transaction in the DtsContainer object. （从 DtsContainer 继承。）
公共属性 LocaleID Gets or sets an Integer that indicates the Microsoft Win32® localeID to use when the DtsContainer object is executed. （从 DtsContainer 继承。）
公共属性 LogEntryInfos Returns a LogEntryInfos object. This property is read-only. （从 DtsContainer 继承。）
公共属性 LoggingMode Gets or sets a valid value from the DTSLoggingMode enumeration that indicates the logging mode of the container. （从 DtsContainer 继承。）
公共属性 LoggingOptions Returns an object that contains properties that indicates the filtering and logging resource for containers. This property is read-only. （从 DtsContainer 继承。）
公共属性 MaximumErrorCount Gets or sets an Integer value that indicates the maximum number of errors that can occur before the DtsContainer object stops running. （从 DtsContainer 继承。）
公共属性 Name Gets or sets the name of the DtsContainer. （从 DtsContainer 继承。）
公共属性 Parent Returns the parent container. The value is read-only. （从 DtsContainer 继承。）
公共属性 PrecedenceConstraints Returns a PrecedenceConstraints collection. This field is read-only.
公共属性 Properties Returns a set of properties for the ForLoop into a DtsProperties collection.
公共属性 Site 基础结构。 （从 DtsContainer 继承。）
公共属性 StartTime Returns the time that the container began execution. This property is read-only. （从 DtsContainer 继承。）
公共属性 StopTime Returns the time that the container ended execution. This property is read-only. （从 DtsContainer 继承。）
公共属性 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. （从 DtsContainer 继承。）
公共属性 TransactionOption Gets or sets a DTSTransactionOption enumeration value that indicates whether the container participates in transactions. （从 DtsContainer 继承。）
公共属性 VariableDispenser Returns a VariableDispenser object so variables associated with the container can be locked. （从 DtsContainer 继承。）
公共属性 Variables Returns a collection that contains the variables associated with this container. This property is read-only. （从 DtsContainer 继承。）

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方法

  名称 说明
公共方法 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. （从 DtsContainer 继承。）
公共方法 Dispose Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. （从 DtsContainer 继承。）
公共方法 Equals Determines whether two object instances are equal. （从 DtsObject 继承。）
公共方法 Execute Runs the application, container, or package as part of a package workflow. （从 DtsContainer 继承。）
受保护方法 Finalize （从 Object 继承。）
公共方法 GetExpression Returns a String that contains the expression for the specified property. Null means no expression is assigned.
公共方法 GetHashCode Returns the hash code for this instance. （从 DtsObject 继承。）
公共方法 GetPackagePath Returns a String that contains the relative path to the package location.
公共方法 GetType （从 Object 继承。）
公共方法 LoadFromXML This method is not callable by your application code. To load a package saved as .xml, use the Application..::..LoadPackage method. （从 DtsContainer 继承。）
受保护方法 MemberwiseClone （从 Object 继承。）
公共方法 ResumeExecution Resumes execution of the task after pausing. The task or container is resumed by the runtime engine. （从 DtsContainer 继承。）
公共方法 SaveToXML This method is not callable by your application code. To save a package as .xml, use the Application..::..SaveToXml method. （从 DtsContainer 继承。）
公共方法 SetExpression Assigns the specified expression to the property. Specify nullNothingnullptrunitnull 引用（在 Visual Basic 中为 Nothing） to remove an existing expression from the property.
受保护方法 SetWrappedExecutable 基础结构。 （从 EventsProvider 继承。）
公共方法 SuspendExecution Called when the executable needs to suspend. This method is called by the runtime engine. （从 DtsContainer 继承。）
公共方法 ToString （从 Object 继承。）
公共方法 Validate Allows the container to determine if it contains invalid settings that will prevent it from executing successfully. （从 DtsContainer 继承。）

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事件

  名称 说明
公共事件 Disposed Adds an event handler to listen to the Disposed event on the component. （从 DtsContainer 继承。）

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字段

  名称 说明
受保护字段 m_executable 基础结构。 （从 Executable 继承。）

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注释

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 For 循环容器.

线程安全

此类型的任何公共 static（在 Visual Basic 中为 Shared） 成员都是线程安全的。不保证所有实例成员都是线程安全的。