ArcGIS API for Silveright 3.0 Released

I like Silverlight as a programming language, and now the ArcGIS API for Silveright is released.  You can check out the announcement here.

Enjoy

In the Esri's ArcGIS for SharePoint SDK, you can create buttons in the SharePoint ribbon.  In this example, I will talk about the OnHidden event.  This event fires when the Hide() is called on the floating window after it is displayed.  This can be used to signal a process that the event is finished, and now you can do some other process or show another form etc...

Here I just implemented ICommand, and kept everything default.  I created a custom event EventHandler called OnHidden that will get call when the floating window is hidden or closed by a user.

    [Export(typeof(ICommand))]
    [DisplayNameAttribute("This is a Demo")]
    [DefaultIcon("/DemoFun;component/Images/Demo.png")]
    public class cmdGenerateExcelTemplate : ICommand
    {
        public bool CanExecute(object parameter)
        {
            return true;
        }

        public event EventHandler CanExecuteChanged;
        public event EventHandler OnHidden;
     
        public void Execute(object parameter)
        {
         
            MapApplication.Current.ShowWindow("This is my control",
                 <controlobject>,
                false,
                null,
                OnHidden,
                WindowType.Floating);
            this.OnHidden += new EventHandler(cmdGenerateExcelTemplate_OnHidden);

        }

        void cmdGenerateExcelTemplate_OnHidden(object sender, EventArgs e)
        {
            MessageBox.Show("I'm hidden now!");
        }
That's It.  It's very easy to do, and helpful in some instances.

Enjoy

Silverlight Charting

Here is a great resource for developing Silverlight charts using the Silverlight Toolkit: http://cesso.org/Samples/ChartBuilder/

Working with Special Characters

Every once in awhile you need to work with the following characters in XAML:

• >
• <
• "
• &

You would get these errors if you put them in a text value:
Error 5 Entity references or sequences beginning with an ampersand ‘&’ must be terminated with a semicolon ‘;’.
Error 4 ‘"’ is an unexpected token. The expected token is ‘;’.

You can encode invalid characters for use in XAML by using the following encoding syntax:

Character	Encoding
<	&lt;
>	&gt;
&	&amp;
“	&quot;
space	&#160;
‘	&apos;
(numeric character mappings)	&#[integer]; or &#x[hex];
(nonbreaking space)	&#160; (assuming UTF-8 encoding)

Embed Silverlight Map

I navigated over to www.rexhansen.com, I found a nice silverlight example for the sdk, but I wanted to embed a map into the blogger posts. Here is how I did it. I used the iframe tag to hold the silverlight reference as such.

iframe style="WIDTH: 400px; HEIGHT: 300px" src="http://www.drivehq.com/file/df.aspx/publish/rex_hansen/SampleCode/ArcGIS_SOAP_Silverlight_AppTestPage.html" frameborder="0" scrolling="no"

ESRI Silverlight Map Control Example

Make sure you close the iframe tag, or it won't work.

Enjoy