Silverlight/开发入门 环境搭建
1 Silverlight/SDK
下载ARCGIS API for Microsoft Silverlight/WPF ，需要注册一个ESRI Gloab 账户。
下载地址http://resources.esri.com/arcgisserver/apis/silverlight/
2 开发环境：
1）Visual Studio 2008 SP1 或者 Visual Web Developer Express with SP1 
下载地址 ：
Visual Studio 2008 SP1：
http://msdn.microsoft.com/en-us/vs2008/products/cc268305.aspx
Visual Web Developer Express with SP1：
http://www.microsoft.com/express/vwd
不想装vs2008的话，可以选择vwd，安装文件比较小
2）Silverlight Tools for Visual Studio 2008 SP1 (add-on)
下载地址
http://www.microsoft.com/downloads/details.aspx?FamilyId=c22d6a7b-546f-4407-8ef6-d60c8ee221ed&displaylang=en
首先安装vs2008或者vwd，然后安装Silverlight Tools for Visual Studio 2008 SP1，开发环境就搭建好了。
3 helloWorld
1）打开vwd，新建一个Silverlight工程。

2）选择Add a New ASP.NET web project to solution to host  Silverlight

3) 点击ok

4） 添加引用，找到siliverlight SDK 目录下面siliverlight\ESRI.ARCGIS.dll

5) 将如下代码添加到page.axml中
<UserControl x:Class="HelloWorld.Page"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:esri="clr-namespace:ESRI.ARCGIS;assembly=ESRI.ARCGIS"
    xmlns:esriSymbols="clr-namespace:ESRI.ARCGIS.Symbols;assembly=ESRI.ArcGIS"
    xmlns:esriGeometry="clr-namespace:ESRI.ArcGIS.Geometry;assembly=ESRI.ArcGIS"
    >
    <Grid x:Name="LayoutRoot" Background="White">
        <Grid.Resources>
            <esriSymbols:SimpleMarkerSymbol x:Key="RedMarkerSymbol" Color="Red" Size="12" Style="Circle" />
            <esriSymbols:PictureMarkerSymbol x:Key="PinPictureMarkerSymbol" ffsetX="11" ffsetY="39" Source="/Assets/images/i_pushpin.png" />
            <esriSymbols:PictureMarkerSymbol x:Key="GlobePictureMarkerSymbol" ffsetX="8" ffsetY="8" Source="/Assets/images/globe-16x16.png" />
            <esriSymbols:SimpleLineSymbol x:Key="RedLineSymbol" Color="Red" Width="4" Style="Solid" />
            <esriSymbols:CartographicLineSymbol x:Key="CartoLineSymbol" Color="Green" Width="4" DashCap="Triangle" DashArray="5 1" />
            <esriSymbols:SimpleFillSymbol x:Key="RedFillSymbol" Fill="#66FF0000" BorderBrush="Red" BorderThickness="2" />
            <esriSymbols:PictureFillSymbol x:Key="GlobePictureFillSymbol" Source="/Assets/images/globe-16x16.png" />
        </Grid.Resources>
        <esri:Map x:Name="myMap">
            <esri:Map.Layers>
                <esri:ArcGISTiledMapServiceLayer ID="StreetMap" Url="http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"/>
                <esri:GraphicsLayer ID="MyGraphics" />
            </esri:Map.Layers>
        </esri:Map>
    </Grid>
</UserControl>

6)编译 运行 。