Update of the WPF integration for the validation application block

In WPF databinding you can bind not only to a property of an object, but also to a path. For example, in the quickstart of the validation application block, the customer object contains an address object. You can now databind a textbox to the city with the expression Address.City, using the common dot notation:

<TextBox Text="{Binding Path=Address.City}"/>

I have now updated the ErrorProvider of the WPF integration for the validation application block to support these data bindings. You can now conveniently nest all the databound controls into a single ErrorProvider, and get automatic validation of the customer and address fields.

You can download the update here.

Here are some answers to questions I received about the WPF integration:

Question: How do I compile the sample application that is contained in your zip archive?

Answer: First, make sure you have the source code of the Enterprise Library 3.0 installed. You can find the business entities in the Quick Starts/Validation/CS directory. You can also extract the zip archive of the WPF integration into that directory and add the projects to the ValidationQuickStart project, and all references should be set.

Question: Can I use the EnterpriseValidationRule directly in my XAML, without using the ErrorProvider?

Answer: Yes, for example:

    <TextBox>

      <TextBox.Text>

        <Binding Path="LastName">

          <Binding.ValidationRules>

            <my:EnterpriseValidationRule SourceTypeName="ValidationQuickStart.BusinessEntities.Customer, ValidationQuickStart.BusinessEntities" PropertyName="LastName" RulesetName="RuleSetA"/>

          </Binding.ValidationRules>

        </Binding>

      </TextBox.Text>

    </TextBox>