Silverlight获取SharePoint当前登录用户信息

在《用Javascript获取SharePoint当前登录用户的用户名及Group信息》中已经介绍了用Javascript调用WebService获取SharePoint中当前登录用户信息的方法。如果要在部署到SharePoint里的Silverlight程序中获取当前登录SP的用户信息，可以直接调用宿主html页面中的javascript代码来实现：

String userName = System.Windows.browser.HtmlPage.Window.Invoke("getCurrentUserName", null) as string;

注：当javascript函数返回的是一个Array时，我不知道在Silverlight 2 Release中怎么获取返回值。我尝试过用string[]、Array()、List、Dictionary等类型接受，返回的都是null。

但如果不想调用host页面的javascript，则也可以直接用C#代码来调用SharePoint的WebService来实现。但前提是必须通过调用Host页的HTML来获取_spUserId变量的值，即当前登录用户的ID。

一、宿主页HTML：

<Script language="javascript>
function getlogonedUserId()
{
return _spUserId;
}
</Script>

二、在Silverlight里调用javascript来获取登录用户ID：

double _userID = (double)HtmlPage.Window.Invoke("getlogonedUserId");

定义一个类SPUserInfo，负责根据“用户ID”来获取用户的信息（用户名及组）：

public class SPUserInfo
{
public double UserID { get; set; }
public string UserName { get; set; }
public List<string> Groups { get; set; }
internal event RoutedEventHandler GetUserInfoCompleted;
string soapPrefix = "<?xml version=/"1.0/" encoding=/"utf-8/"?><soap:Envelope xmlns:xsi=/"http://www.w3.org/2001/XMLSchema-instance/" xmlns:xsd=/"http://www.w3.org/2001/XMLSchema/" xmlns:soap=/"http://schemas.xmlsoap.org/soap/envelope//"><soap:Body>";
string soapPostfix = "</soap:Body></soap:Envelope>";
public SPUserInfo()
{
UserName = null;
Groups = new List<string>();
}
public void GetUserInfo(double userId)
{
UserID = userId;
GetUserName();
}
private void GetUserName()
{
// Create the xml request for the list
string request = String.Format("{0}<GetListItems xmlns=/"http://schemas.microsoft.com/sharepoint/soap//"><listName>User information List</listName><viewName></viewName><query><Query><Where><Eq><FieldRef Name=/"ID/"/><Value Type=/"Counter/">{1}</Value></Eq></Where></Query></query><viewFields><ViewFields><FieldRef Name=/"Name/"/></ViewFields></viewFields><rowLimit>1</rowLimit><queryOptions><QueryOptions/></queryOptions><webID></webID></GetListItems>{2}",
soapPrefix,
UserID,
soapPostfix);
// Todo: We need to dynamically generate the endpoint address using HtmlPage.Document.DocumentUri.
// Send data to Sharepoint List
WebClient client = new WebClient();
client.Headers["Content-Type"] = "text/xml; charset=utf-8";
client.Headers["SOAPAction"] = "http://schemas.microsoft.com/sharepoint/soap/GetListItems";
client.UploadStringCompleted += new UploadStringCompletedEventHandler(GetUserNameCompleted);
client.UploadStringAsync(new Uri( "http://yewen/_vti_bin/Lists.asmx?op=GetListItems", UriKind.Absolute), request); // should be the root url of sharepoint
}
void GetUserNameCompleted(object sender, UploadStringCompletedEventArgs e)
{
if (e.Error == null)
{
XElement root = XElement.Parse( e.Result );
foreach (XElement element in root.Descendants("{#RowsetSchema}row"))
{
UserName = (string)element.Attribute("ows_Name");
GetGroups();
}
}
}
private void GetGroups()
{
// Create the xml request for the list
string request = String.Format("{0}<GetGroupCollectionFromUser xmlns=/"http://schemas.microsoft.com/sharepoint/soap/directory//"><userLoginName>{1}</userLoginName></GetGroupCollectionFromUser>{2}",
UserName,
soapPostfix);
// Todo: We need to dynamically generate the endpoint address using HtmlPage.Document.DocumentUri.
// Send data to Sharepoint List
WebClient client = new WebClient();
client.Headers["Content-Type"] = "text/xml; charset=utf-8";
client.Headers["SOAPAction"] = "http://schemas.microsoft.com/sharepoint/soap/directory/GetGroupCollectionFromUser";
client.UploadStringCompleted += new UploadStringCompletedEventHandler(GetGroupsCompleted);
client.UploadStringAsync(new Uri( "http://yewen/graceland/_vti_bin/UserGroup.asmx?op=GetGroupCollectionFromUser", request);
}
// BAD CODES HERE, Should replace with other ways
void GetGroupsCompleted(object sender, UploadStringCompletedEventArgs e)
{
if (e.Error == null)
{
XElement root = XElement.Parse(e.Result);
foreach (XElement element in root.Elements())
{
foreach (XElement x2 in element.Descendants())
{
foreach (XElement x3 in x2.Descendants())
{
foreach (XElement x4 in x3.Descendants())
{
foreach (XElement x5 in x4.Descendants())
{
foreach (XElement x6 in x5.Descendants())
{
Groups.Add(x6.Attribute("Name").ToString());
}
}
}
}
}
}
//XDocument root = XDocument.Parse(e.Result);
//XDocument doc = XDocument.Parse(e.Result.ToString());
//var ret = from item in doc.Descendants("GetGroupCollectionFromUserResponse").ToList()
// select new
// {
// gp = (string)item.Attribute("Name").Value
// };
//foreach (object str in ret)
//{
// Groups.Add(str.ToString());
//}
RaiseGetUserInfoCompleted();
}
}
private void RaiseGetUserInfoCompleted()
{
if (GetUserInfoCompleted != null)
GetUserInfoCompleted(this, null);
}
}

注： 1） GetUserName() 中SOAPAction为“http://schemas.microsoft.com/sharepoint/soap/GetListItems”，而不是“http://schemas.microsoft.com/sharepoint/soap/directory/GetListItems”；

2） GetUserName()中调用的WebService为SharePoint根目录下的Lists.asmx “http://yewen/_vti_bin/Lists.asmx?op=GetListItems”，当我尝试调用对应的SharePoint下子站点的WebService “http://yewen/graceland/_vti_bin/Lists.asmx?op=GetListItems”时却出错，不知为何？

3）GetGroups()中却不用考虑上述两点；

4）void GetGroupsCompleted(object sender,UploadStringCompletedEventArgs e)中解析Group的代码很糟糕，应该用Linq以更好的方式来实现!!!!

三、调用SPUserInfo来获取当前登录用户的信息：

SPUserInfo curUserInfo = new SPUserInfo();
curUserInfo.GetUserInfoCompleted += new RoutedEventHandler(curUserInfo_GetUserInfoCompleted);
curUserInfo.GetUserInfo(_userID);
void curUserInfo_GetUserInfoCompleted(object sender, RoutedEventArgs e)
{
//可以直接调用curUserInfo
//或者 SPUserInfo spU = sender as SPUserInfo
}

Silverlight获取SharePoint当前登录用户信息

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