ValidationErrorCollection.HasErrors Propriété

Définition

Espace de noms:

System.Workflow.ComponentModel.Compiler

Assembly:

System.Workflow.ComponentModel.dll

Indique si la collection contient des objets ValidationError qui indiquent des erreurs de compilation.

public:
 property bool HasErrors { bool get(); };

public bool HasErrors { get; }

member this.HasErrors : bool

Public ReadOnly Property HasErrors As Boolean

Valeur de propriété

Boolean

true si l'activité a généré des erreurs de validation ; sinon, false.

Exemples

L'exemple suivant illustre la création et la manipulation d'une collection d'erreurs de validation dans le cadre d'une routine de validation personnalisée.

Cet exemple de code fait partie de l’exemple du Kit de développement logiciel (SDK) Send Email et provient du fichier SendMailActivity.cs. Pour plus d’informations, consultez Envoyer une activité de messagerie.

public class SendEmailValidator : System.Workflow.ComponentModel.Compiler.ActivityValidator
{
    // Define private constants for the Validation Errors
    private const int InvalidToAddress = 1;
    private const int InvalidFromAddress = 2;
    private const int InvalidSMTPPort = 3;

    //customizing the default activity validation
    public override ValidationErrorCollection ValidateProperties(ValidationManager manager, object obj)
    {

        // Create a new collection for storing the validation errors
        ValidationErrorCollection validationErrors = base.ValidateProperties(manager, obj);

        SendEmailActivity activity = obj as SendEmailActivity;
        if (activity != null)
        {
            // Validate the Email and SMTP Properties
            this.ValidateEmailProperties(validationErrors, activity);
            this.ValidateSMTPProperties(validationErrors, activity);
        }
        return validationErrors;
    }

Public Class SendEmailValidator
    Inherits System.Workflow.ComponentModel.Compiler.ActivityValidator

    ' Define private constants for the Validation Errors 
    Private Const InvalidToAddress As Integer = 1
    Private Const InvalidFromAddress As Integer = 2
    Private Const InvalidSMTPPort As Integer = 3

    ' customizing the default activity validation
    Public Overrides Function ValidateProperties(ByVal manager As ValidationManager, ByVal obj As Object) As ValidationErrorCollection

        ' Create a new collection for storing the validation errors
        Dim validationErrors As New ValidationErrorCollection()

        Dim activity As SendEmailActivity = TryCast(obj, SendEmailActivity)

        If activity IsNot Nothing Then

            ' Validate the Email and SMTP Properties
            Me.ValidateEmailProperties(validationErrors, activity)
            Me.ValidateSMTPProperties(validationErrors, activity)

            ' Raise an exception if we have ValidationErrors
            If validationErrors.HasErrors Then

                Dim validationErrorsMessage As String = String.Empty

                For Each validationError As ValidationError In validationErrors
                    validationErrorsMessage += _
                        String.Format("Validation Error:  Number 0} - '1}' \n", _
                        validationError.ErrorNumber, validationError.ErrorText)
                Next

                ' Throw a new exception with the validation errors.
                Throw New InvalidOperationException(validationErrorsMessage)
            End If
        End If
        Return validationErrors
    End Function

Remarques

Si un Activity a généré un avertissement, l'avertissement est considéré comme une erreur dans le contexte de cette propriété.