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QuestionUI Validation Problem Pin
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GeneralRe: UI Validation Problem Pin
Kevin Marois12-Oct-23 8:25
professionalKevin Marois12-Oct-23 8:25 
OK, so I'm not really sure what the problem is here:
private void Validate()
{
    ClearErrors("CustomerName");

    if (string.IsNullOrWhiteSpace(Customer.CustomerName))
    {
        AddError("CustomerName", "The Customer Name cannot be empty.");
    }
}
<TextBox Grid.Row="1" 
            Grid.Column="0"
            Text="{Binding Customer.CustomerName, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}"
            IsEnabled="{Binding AreFieldsEnabled}">

<pre>
<Validation.ErrorTemplate>
    <ControlTemplate>
        <StackPanel>
            <AdornedElementPlaceholder x:Name="textBox" />
            <ItemsControl ItemsSource="{Binding}">
                <ItemsControl.ItemTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding ErrorContent}" Foreground="Red" />
                    </DataTemplate>
                </ItemsControl.ItemTemplate>
            </ItemsControl>
        </StackPanel>
    </ControlTemplate>
</Validation.ErrorTemplate>



The TextBox is bound to Customer.CustomerName. When I remove the text, the error is added, but I don't see anything. I'm guessing I'm not doing this right.
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If it's not broken, fix it until it is.
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GeneralRe: UI Validation Problem Pin
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