Question

I’m trying to realize when the ValidationSummary really loads and how can I force it to be loaded.

I’ve suscribed to loaded event to force a page validation and this is only triggered when I cause any “new” validation or open a ComboBox or something like this.

Any idea?? Thanks in advance.

Here goes my view:

<Grid Margin="0,3">
      <Grid.ColumnDefinitions>
      <ColumnDefinition Width="120"></ColumnDefinition>
      <ColumnDefinition Width="60" />
      <ColumnDefinition Width="Auto"/>
      <ColumnDefinition Width="120"/>
      <ColumnDefinition Width="60"/>
      <ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<sdk:Label Grid.Column="0" Target="{Binding ElementName=txtImporteTotal}" Content="Total Acto" VerticalAlignment="Center" HorizontalAlignment="Right" Margin="5,0"></sdk:Label>
<TextBox Grid.Column="1" Name="txtImporteTotal" Margin="5,0" VerticalAlignment="Center" HorizontalAlignment="Stretch" Text="{Binding ActoMedico.importe_total, Mode=TwoWay, ValidatesOnExceptions=True, ValidatesOnDataErrors=True, NotifyOnValidationError=True}"></TextBox>
<sdk:DescriptionViewer Target="{Binding ElementName=txtImporteTotal}" Grid.Column="2"></sdk:DescriptionViewer>
<sdk:Label Grid.Column="3" Target="{Binding ElementName=txtImporteMedico}" Content="Total Médico" VerticalAlignment="Center" HorizontalAlignment="Right" Margin="5,0"></sdk:Label>
<TextBox Grid.Column="4" Name="txtImporteMedico" Margin="5,0" VerticalAlignment="Center" HorizontalAlignment="Stretch" Text="{Binding ActoMedico.importe_medico, Mode=TwoWay, ValidatesOnExceptions=True, ValidatesOnDataErrors=True, NotifyOnValidationError=True}"></TextBox>
<sdk:DescriptionViewer Target="{Binding ElementName=txtImporteMedico}" Grid.Column="5"></sdk:DescriptionViewer>

This is its code behind, where I’m forcing the validation:

public ActoMedico()
{
    InitializeComponent();

    this.validationSummary.Loaded += new RoutedEventHandler(validationSummary_Loaded);
}

void validationSummary_Loaded(object sender, RoutedEventArgs e)
    {
        this.forzarValidacion();
    }


    private void forzarValidacion()
    {
       this.txtImporteMedico.GetBindingExpression(TextBox.TextProperty).UpdateSource();
        this.txtImporteTotal.GetBindingExpression(TextBox.TextProperty).UpdateSource();
    }

And finally, this is the model:

#region importe_medico
        public const string importe_medicoPropertyName = "importe_medico";

        private double? _importe_medico;

        [Display(Description = "Importe")]
        [Required(ErrorMessage = "Debe indicar el importe")]
        public double? importe_medico
        {
            get
            {
                return _importe_medico;
            }

            set
            {
                Validator.ValidateProperty(value, new ValidationContext(this, null, null) { MemberName = importe_medicoPropertyName });

                _importe_medico = value;
                RaisePropertyChanged(importe_medicoPropertyName);
            }
        }
        #endregion

#region importe_total
        public const string importe_totalPropertyName = "importe_total";

        private double? _importe_total;
        [Display(Description = "Importe total")]
        [Required(ErrorMessage = "Debe indicar el importe total")]
        public double? importe_total
        {
            get
            {
                return _importe_total;
            }

            set
            {
                Validator.ValidateProperty(value, new ValidationContext(this, null, null) { MemberName = importe_totalPropertyName });

                _importe_total = value;
                RaisePropertyChanged(importe_totalPropertyName);
            }
        }
        #endregion

Answer 1

Finally I get this by forcing a combobox to drop-down, force all the form validations and then undo the drop-down.

So I get the ValidationSummary from the beginning (I want every error from the start to be shown and disable the “save” button for the user.

Thanks so much for your help @vorrtex.