Classe PrecedenceConstraint

Specifies the properties for configuring a precedence constraint between two containers. This class cannot be inherited.

Hiérarchie d'héritage

System.Object
  Microsoft.SqlServer.Dts.Runtime.DtsObject
    Microsoft.SqlServer.Dts.Runtime.PrecedenceConstraint

Espace de noms :  Microsoft.SqlServer.Dts.Runtime
Assembly :  Microsoft.SqlServer.ManagedDTS (en Microsoft.SqlServer.ManagedDTS.dll)

Syntaxe

'Déclaration
Public NotInheritable Class PrecedenceConstraint _
    Inherits DtsObject _
    Implements IDTSName, IDTSPersist, IComponent, IDisposable
'Utilisation
Dim instance As PrecedenceConstraint

public sealed class PrecedenceConstraint : DtsObject, 
    IDTSName, IDTSPersist, IComponent, IDisposable

public ref class PrecedenceConstraint sealed : public DtsObject, 
    IDTSName, IDTSPersist, IComponent, IDisposable

[<SealedAttribute>]
type PrecedenceConstraint =  
    class 
        inherit DtsObject 
        interface IDTSName 
        interface IDTSPersist 
        interface IComponent 
        interface IDisposable 
    end

public final class PrecedenceConstraint extends DtsObject implements IDTSName, IDTSPersist, IComponent, IDisposable

Le type PrecedenceConstraint expose les membres suivants.

Propriétés

	Nom	Description
	ConstrainedExecutable	Gets the name of a constrained container. This property is read-only.
	CreationName	Gets the string used by the Integration Services runtime to create an instance of the PrecedenceConstraint object and add the object to the PrecedenceConstraints collection. This property is read-only.
	Description	Gets or sets a description for the constraint.
	EvalOp	Gets or sets the evaluation operations used by the precedence constraint.
	EvaluatesTrue	Gets a value that indicates whether the specified Value property evaluates to true. This property is read-only.
	Expression	Gets or sets the expression that the precedence constraint uses if EvalOp is set to Expression, ExpressionAndConstraint, or ExpressionOrConstraint.
	ID	Gets the GUID of the precedence constraint. This property is read-only.
	LogicalAnd	Gets or sets a Boolean value that indicates whether multiple constraints work together.
	Name	Gets or sets the unique name of the precedence constraint.
	Parent	Gets the parent container of the PrecedenceConstraint.
	PrecedenceExecutable	Gets the name of the precedence executable. This property is read-only.
	Site	Infrastructure. Gets or sets the site of the precedence constraint.
	Value	Gets or sets the constraint type of Success, Failure, or Completion.

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Méthodes

	Nom	Description
	Dispose	This method is inherited from the IDisposable.Dispose method, which is a generic mechanism to explicitly tell an object to perform cleanup.
	Equals	Determines whether two object instances are equal. (hérité de DtsObject.)
	GetHashCode	Returns the hash code for this instance. (hérité de DtsObject.)
	GetType	(hérité de Object.)
	LoadFromXML	This method is not callable by your application code. Loads a package containing precedence constraints that are saved as .xml, use the Application.LoadPackage method.
	SaveToXML	This method is not callable by your application code. Saves a package as .xml, use the Application.SaveToXml method.
	ToString	(hérité de Object.)

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Événements

	Nom	Description
	Disposed	Adds an event handler to listen to the Disposed event on the precedence constraint.

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Notes

You can specify the precedence and constrained executables that the precedence constraint connects, the expression and constraint that determine whether the constrained executable runs, and whether the precedence constraint works in concert with other precedence constraints.

Sécurité des threads

Tous les membres publics static (Shared dans Visual Basic) de ce type sont thread-safe. Tous les membres de l'instance ne sont pas garantis comme étant thread-safe.

Voir aussi

Référence

Espace de noms Microsoft.SqlServer.Dts.Runtime