大家知道，SharePoint 2010支持客户端的对象模型访问，主要有三种方式：
1..net 的客户端对象模型，2.Javascript 的客户端对象模型 3.Silverlight的客户端对象模型，这里就简单实现一个Silverlight的网页计数器，来达到熟悉客户端对象模型的目的。
其实这个简单的访问计数器主要就是统计了页面刷新了多少次，逻辑很简单，当页面被load的时候，就将次数+1，将次数和页面的地址作为一个Item存放在一个SharePoint list中。下面介绍具体的步骤：
1、准备工作：在SharePoint 2010的某一个site下创建用来存放访问次数和页面地址的list，我们可以取名为Hit Count list。
2、VS2010中创建Silverlight Application Project，然后添加客户端对象模型的dll引用，在SharePoint2010中，Silverlight的支持客户端对象模型的dll文件一般存放在c:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\ClientBin下，所以我们在项目中先Add Reference，在上面的路径下添加Microsoft.SharePoint.Client.Silverlight.dll 和 Microsoft.SharePoint.Client.Silverlight.Runtime.dll两个dll。
3、在项目中添加一个Class，ClientOMProxy.cs作为silverlight访问SharePoint2010数据的代理类，因为Silverlight访问采用异步的方式，所以几个基本的操作方法如下：
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Xml;
using System.Net;
using Microsoft.SharePoint.Client;
namespace ADSK.AEC.SP2010.ClientOM
{
public class ClientOMProxy:IDisposable
{
private ClientContext clientContext = null ;
public ListItemCollection listItems = null ;
public ClientOMProxy( string siteURL)
{
this .SiteURL = siteURL;
clientContext = new ClientContext( this .SiteURL);
}
public void GetListItemsAsync( string listName, string viewXML, out ListItemCollection listItems, ClientRequestSucceededEventHandler successEventHandler, ClientRequestFailedEventHandler failEventHandler)
{
clientContext.Load(clientContext.Web);
List targetList = clientContext.Web.Lists.GetByTitle(listName);
clientContext.Load(targetList);
CamlQuery camlQuery = new CamlQuery();
camlQuery.ViewXml = viewXML;
listItems = targetList.GetItems(camlQuery);
clientContext.Load(listItems);
clientContext.ExecuteQueryAsync(successEventHandler, failEventHandler);
}
public void CreateListItemAsync( string listName, Dictionary < string , object > fieldValueDic, ClientRequestSucceededEventHandler onSuccess, ClientRequestFailedEventHandler onFail)
{
clientContext.Load(clientContext.Web);
List targetList = clientContext.Web.Lists.GetByTitle(listName);
clientContext.Load(targetList);
ListItemCreationInformation itemCreateInfo = new ListItemCreationInformation();
ListItem oListItem = targetList.AddItem(itemCreateInfo);
foreach (KeyValuePair < string , object > pair in fieldValueDic)
{
oListItem[pair.Key] = pair.Value;
}
oListItem.Update();
clientContext.Load(oListItem);
clientContext.ExecuteQueryAsync(onSuccess, onFail);
}
public void UpdateListItemAsync( string listName, ListItem item, Dictionary < string , object > fieldValueDic, ClientRequestSucceededEventHandler onSuccess, ClientRequestFailedEventHandler onFail)
{
clientContext.Load(clientContext.Web);
List targetList = clientContext.Web.Lists.GetByTitle(listName);
clientContext.Load(targetList);
ListItem oListItem = item;
foreach (KeyValuePair < string , object > pair in fieldValueDic)
{
oListItem[pair.Key] = pair.Value;
}
oListItem.Update();
clientContext.Load(oListItem);
clientContext.ExecuteQueryAsync(onSuccess, onFail);
}
public void Dispose()
{
if ( null != clientContext)
clientContext.Dispose();
}
}
}
其中的ClientRequestSucceededEventHandler onSuccess, ClientRequestFailedEventHandler onFail分别为异步操作成功和失败后的回调委托，可以在调用方法的时候传出这两个委托的具体实现。由于是客户端程序，所以真正的操作都是在ExecuteQueryAsync方法调用时才开始执行的。
4、在Main.xaml中添加页面UI：
xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d ="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc ="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable ="d"
d:DesignHeight ="300" d:DesignWidth ="400" >
< Grid x:Name ="LayoutRoot" Background ="White" HorizontalAlignment ="Left" >
< Border CornerRadius ="5" BorderThickness ="2" BorderBrush ="#B8BABD" Width ="80" Height ="40" >
< StackPanel >
< TextBlock x:Name ="txtHitName" FontFamily ="Verdana" FontSize ="10" Padding ="2" Text ="Page Hits" HorizontalAlignment ="Center" VerticalAlignment ="Center" FontStretch ="ExtraExpanded" >
</ TextBlock >
< TextBox x:Name ="txtHitCount" Text ="" Foreground ="Blue" FontSize ="10" Padding ="0" FontWeight ="Bold" HorizontalAlignment ="Center" VerticalAlignment ="Center" FontStretch ="UltraCondensed" BorderThickness ="0" ></ TextBox >
</ StackPanel >
</ Border >
</ Grid >
</ UserControl >
用一个textbox来显示访问次数，在main.xaml.cs中添加实现逻辑：
{
private ADSK.AEC.SP2010.ClientOM.ClientOMProxy clientProxy = null ;
private ListItemCollection targetHitCount = null ;
public MainPage( string siteUrl)
{
InitializeComponent();
string currentPageURL = HtmlPage.Document.DocumentUri.ToString();
string viewXML = @" <View><ViewFields><FieldRef Name='HitCount'/></ViewFields><Query><Where><Eq><FieldRef Name='Title'/><Value Type='Text'> " + currentPageURL + " </Value></Where></Eq></Query></View> " ;
clientProxy = new ClientOM.ClientOMProxy(siteUrl);
clientProxy.successEventHandler += new ClientRequestSucceededEventHandler(OnRequestSucceeded);
clientProxy.failEventHandler += new ClientRequestFailedEventHandler(OnRequestFailed);
clientProxy.GetListItemsAsync( " Hit Count " , viewXML, out targetHitCount);
}
private void BindData()
{
if (targetHitCount != null && targetHitCount.Count != 0 )
{
long hitCount = Convert.ToInt64(targetHitCount[ 0 ][ " HitCount " ].ToString());
txtHitCount.Text = (hitCount + 1 ).ToString();
lock (targetHitCount[ 0 ])
{
Dictionary < string , object > fieldValueDic = new Dictionary < string , object > ();
fieldValueDic[ " HitCount " ] = hitCount + 1 ;
clientProxy.UpdateListItemAsync( " Hit Count " , targetHitCount[ 0 ], fieldValueDic, null , null );
}
}
else
{
txtHitCount.Text = " 1 " ;
Dictionary < string , object > fieldValueDic = new Dictionary < string , object > ();
fieldValueDic[ " Title " ] = HtmlPage.Document.DocumentUri.ToString();
fieldValueDic[ " HitCount " ] = 1 ;
clientProxy.CreateListItemAsync( " Hit Count " , fieldValueDic, null , null );
}
}
private void OnRequestSucceeded(Object sender, ClientRequestSucceededEventArgs args)
{
Dispatcher.BeginInvoke(BindData);
clientProxy.Dispose();
}
private void OnRequestFailed(Object sender, ClientRequestFailedEventArgs args)
{
clientProxy.Dispose();
}
逻辑比较简单，这里就不详细解释了。在App.xaml.cs中的Startup事件中添加读入参数的方法：
{
string siteUrl = e.InitParams[ " SiteUrl " ];
siteUrl = System.Windows.Browser.HttpUtility.UrlDecode(siteUrl);
this .RootVisual = new MainPage(siteUrl);
}
OK，build一下，先在客户端调试一下，这里注意了，如果你机器安装过360的浏览器的话，那么有可能调试的时候无法进入断点，保险的方法还是将IE设置为默认浏览器，然后调试。
5、将生成的.xap文件上传到SharePoint2010的一个Document library中，在任意一个你想统计访问次数的页面上Add web part，选择Silverlight web part，在url中添加xap上传的路径，然后在Other Settings中添加外部传入参数，形式为SiteUrl = hit count list 所属site的url。
完成以后，可以看见页面上已经有了访问次数统计了：
这里只是简单的创建了一个页面次数访问的统计器，关键还是熟悉了SharePoint2010下Silverlight的客户端访问模型，欢迎大家讨论。
