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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 that the email address is valid.

Deborah Kurata has a simple Silverlight MVVM, WCF RIA Services sample application that is used to demonstrate validation techniques.

Source: Deborah's Developer MindScape

The sample application is provided in this separate post so it can be readily used with any of the presented validation techniques.

NOTE: This post defines a sample application that is used in the validation scenarios presented in this prior post.

In a prior post, Deborah Kurata set the ground work for displaying a chart. In this post, she covers how to format the tick marks on the axes.

Source: Deborah's Developer MindScape

The tick marks on the charts may not look like much, but they can be helpful to clarifying the meaning of your charts.

By default, the tick marks are small little black lines on each axis that identify the axis "ticks".

Deborah Kurata has two blog posts discussing Silverlight chartings - the first one is about setting colors, while the second is on setting the ToolTip:

• Silverlight Charting: Setting Colors 
• Silverlight Charting: Setting the Tooltip 

  When working with charts, by default the built-in styling sets the chart colors. But there may be times that you want to control the colors. This post covers a technique for manually setting the chart colors.
  
  

Deborah Kurata has published the second part of his MVVM Commanding article.

Source: Deborah's Developer MindScape

This prior post introduced commanding in Silverlight for use with MVVM. However, the built-in Silverlight commanding only works for controls that inherit from ButtonBase, such as Button and HyperlinkButton. This post provides information on implementing commanding for other Silverlight controls.

Deborah Kurata describes in details a ViewModelBase class which provides a starting point for building your View/Model base class.

Source: Deborah's Developer MindScape

As you start to add more Views and associated View/Models to your Silverlight line of business (LOB) application, you will notice that the classes include some common and repeated code. Building a simple base class for your View/Models provides a single place for that common code.

Deborah Kurata has published two good tutorials on his blog:

• Populating a DataGrid in a Silverlight Application 
• Populating a DataGrid in a Silverlight Application using MVVM

  One of the common requirements of a line of business application is to present data. This post demonstrates the basics of how to populate a DataGrid from a business object. This post is a "stepping stone" to the ultimate goal of populating the DataGrid using MVVM, which is a later post in this series.
  

Deborah Kurata has started a new series of posts that will build a Silverlight Line of Business (LOB) application.

Source: Deborah's Developer MindScape

One of the goals for these posts is to find the right level of sample code that is complex enough to be useful, yet simple enough to understand and short enough to paste relevant code. So this example tries to keep the code as simple as possible and yet accomplish the application's requirements.

This particular example is as absolutely simple as possible to help you get up and running with these technologies. To meet this goal, this first post covers only how to retrieve data. Later posts will cover update operations.