Méthode Validate
Validates the connection and returns an enumeration that indicates success or failure.
Espace de noms : Microsoft.SqlServer.Dts.Runtime
Assembly : Microsoft.SqlServer.ManagedDTS (en Microsoft.SqlServer.ManagedDTS.dll)
Syntaxe
'Déclaration
Public Overridable Function Validate ( _
infoEvents As IDTSInfoEvents _
) As DTSExecResult
'Utilisation
Dim instance As ConnectionManagerBase
Dim infoEvents As IDTSInfoEvents
Dim returnValue As DTSExecResult
returnValue = instance.Validate(infoEvents)
public virtual DTSExecResult Validate(
IDTSInfoEvents infoEvents
)
public:
virtual DTSExecResult Validate(
IDTSInfoEvents^ infoEvents
)
abstract Validate :
infoEvents:IDTSInfoEvents -> DTSExecResult
override Validate :
infoEvents:IDTSInfoEvents -> DTSExecResult
public function Validate(
infoEvents : IDTSInfoEvents
) : DTSExecResult
Paramètres
- infoEvents
Type : Microsoft.SqlServer.Dts.Runtime. . :: . .IDTSInfoEvents
An object that implements the IDTSInfoEvents events interface to raise errors, warning, or informational events.
Valeur de retour
Type : Microsoft.SqlServer.Dts.Runtime. . :: . .DTSExecResult
A DTSExecResult enumeration.
Notes
The Validate method reviews properties and settings for inaccuracies or incorrect settings. The method does not touch data, or connect to data sources to validate connections. However, it ensures that required fields are populated and contain appropriate values. The fields that are validated differ depending on what object is being validated.
The primary use of Validate is when writing a custom task. The Validate method is called by the SSIS Designer when a task is dropped onto the design surface and again, potentially multiple times, when properties are being set. However, in code, the Validate method on individual objects is not commonly used, as it is recommended that you call the Validate method on the Package when you need to validate objects. However, the method is available on individual objects should you find a unique circumstance where it is needed.
The Validate method is overridden in custom tasks, either for validation of the object when used in the SSIS Designer, or when called by code. For more information on writing the Validate method for a custom task, see Codage d'une tâche personnalisée.
Exemples
The following code example shows how to validate objects using the Validate method of the Package object.
DTSExecResult myresult = pkg.Validate(myPkgConnections, myPkgVariables, myIDTSEvents, myIDTSLogging);
Dim myresult As DTSExecResult = pkg.Validate(myPkgConnections,myPkgVariables,myIDTSEvents, myIDTSLogging)