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24 posts tagged with validation

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  • Using Attribute Validation in Silverlight with WCF RIA Services Example

    0 comments  /  posted by  Silverlight Show  on  Aug 15, 2011 (2 weeks ago)
    Read original post by Jeremy Likness at C#er : IMage I'm not a big fan of attribute-based validation because I find there are often complex requirements that involve asynchronous operations that often break the attribute model. I prefer more fluent validation using rules that can be shared between the client and server and can handle asynchronous scenarios. For those times when I do have to use a ...


  • Reflection, Lambda, and Expression Magic

    0 comments  /  posted by  Silverlight Show  on  Aug 01, 2011 (1 month ago)
    Read original post by Jeremy Likness at C#er : IMage Sometimes I love how a little reflection can work magic. In this case I was building what I'll call a "non-intrusive" validation system. The project contains entities that are generated by templates, and it would be extremely difficult to crack open those templates to put in a lot of custom validation code. So I decided to approach it using a he ...

  • "The Validation Story in Silverlight" - new e-book by Gill Cleeren

    0 comments  /  posted by  Silverlight Show  on  Jul 26, 2011 (1 month ago)
    First, we would like to thank you for all the positive feedback we received regarding the e-books we published in the past month. We already have 14 e-books available for download, two of which are exclusively authored for SilverlightShow: Windows Phone 7 for Silverlight Developers by András Velvárt and Getting Ready for Microsoft Silverlight Exam 70-506 by Gill Cleeren. Today, we add one more e-b ...
  • 0 comments  /  posted by  Silverlight Show  on  Jun 30, 2011 (2 months ago)
    Tags:   validation , data-annotations
    Read original post at OdeToCode Several people have asked me about using data annotations for validation outside of a UI framework, like ASP.NET MVC or Silverlight. The System.ComponentModel.DataAnnotations assembly contains everything you need to execute validation logic in the annotations. Specifically, there is a static Validator class to execute the validation rules.
  • 0 comments  /  posted by  Silverlight Show  on  May 05, 2011 (4 months ago)
    In this post, Deborah Kurata demonstrates how to use a resource file with the validation attributes used by Silverlight and WCF RIA Services. Source: Deborah's Developer MindScape Use a resource file any time you want better management of your strings, especially if you plan to localize your application.
  • 0 comments  /  posted by  Silverlight Show  on  May 03, 2011 (4 months ago)
    In this post, Deborah Kurata discusses single property validation. Source: Deborah's Developer MindScape When you identify the validation scenarios for your application, you will find that some only require basic single property validation. Examples: Ensure that a first name is entered. Ensure that the first name is not longer than 20 characters Ensure that the age is between 16 and 120. Ensure t ...

  • Silverlight 4 MVVM Validation using INotifyDataErrorInfo

    0 comments  /  posted by  Silverlight Show  on  Mar 23, 2011 (5 months ago)
    Tags:   mvvm , validation , emil-einarsson
    In this post, Emil Einarsson demonstrates how to implement the INotifyDataErrorInfo in an MVVM manner to handle both synchronous and asynchronous validation in Silverlight 4. Source: Emil's Blog NotifyErrorsChanged is nothing fancy. Whenever the errors have changed we need to fire the ErrorsChanged event so that the interface will know that it’s been changed. Just as we need to do with PropertyCha ...
  • 0 comments  /  posted by  Silverlight Show  on  Mar 16, 2011 (5 months ago)
    Join us today at 10 am PDT (check your local time) for a free SilverlightShow webinar: WCF RIA Services Validation Presenter: Brian Noyes Register here >> In this session Brian will dive in depth into the validation features of WCF RIA Services. You will see how to leverage WCF RIA Services validation mechanisms when editing data with validation that is part of the entities, server side validation ...

  • Tomorrow: Free SilverlightShow Webinar - WCF RIA Services Validation

    0 comments  /  posted by  Silverlight Show  on  Mar 15, 2011 (5 months ago)
    Join tomorrow's free SilverlightShow webinar with Brian Noyes: WCF RIA Services Validation Webinar time: 10 am PDT (check your local time) Today is your last chance to reserve your seat for this webinar. The registration is free but required. In this session Brian will dive in depth into the validation features of WCF RIA Services. You will see how to leverage WCF RIA Services validation mechanism ...
  • 0 comments  /  posted by  Svetla Stoycheva  on  Feb 24, 2011 (6 months ago)
    Free SilverlightShow Webinar: WCF RIA Services Validation   March 16th, 2011, 10 am - 11.10 am PDT (see your local time) Register for this webinar Brian Noyes continues his series of Silverlight Show webinars covering his very successful article series on WCF RIA Services. In this session Brian will dive in depth into the validation features of WCF RIA Services. You will see how to leverage WCF RI ...

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