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MVVM Survival Guide for Enterprise Architectures in Silverlight and WPF

You're reading from  MVVM Survival Guide for Enterprise Architectures in Silverlight and WPF

Product type Book
Published in Aug 2012
Publisher Packt
ISBN-13 9781849683425
Pages 490 pages
Edition 1st Edition
Languages
Concepts

Table of Contents (21) Chapters

MVVM Survival Guide for Enterprise Architectures in Silverlight and WPF
Credits
Foreword
About the Authors
About the Reviewer
www.PacktPub.com
Preface
1. Presentation Patterns 2. Introduction to MVVM 3. Northwind – Foundations 4. Northwind—Services and Persistence Ignorance 5. Northwind—Commands and User Inputs 6. Northwind—Hierarchical View Model and IoC 7. Dialogs and MVVM 8. Workflow-based MVVM Applications 9. Validation 10. Using Non-MVVM Third-party Controls 11. MVVM Application Performance MVVM Frameworks
Binding at a Glance Index

Validation

ValidationRules

  • Inherit ValidationRule and override Validate().

  • Instantiate and add to the Binding.ValidationRules collection.

  • Use the ValidationStep property to control when it should be applied. The possible values are ConvertedProposedValue, CommittedValue, RawProposedValue, and UpdatedValue.

IDataErrorInfo

  • Used for sync validation where only single validation result suffices. Implemented by View Model. Apply ValidatesOnDataErrors or DataErrorValidationRule for binding.

INotifyDataErrorInfo [.net 4.5]

  • Used for sync/async validation when more than one validation result is available. Implemented by View Model. Apply ValidatesOnNotifyDataErrors or NotifyDataErrorValidationRule for binding.

Enterprise Library 5.0 Validation Application Block

  • Supports defining validation rules by using attributes, configuration, and self-validation which can also be consolidated

Windows WF

  • Used for more complex sync/async business rules validations

Validation.ErrorTemplate

  • Used to specify the template when control value fails validation

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