我可以从 Sharepoint 站点上的 Silverlight 用户控件访问 WSS 组吗？

Question

我在 MOSS (Sharepoint 2007) 中有一个 Silverlight 控件，我想根据 Sharepoint 中设置的用户角色有条件地启用它。我发现我可以根据

http://<server-url>/_vti_bin/usergroup.asmx

。 aspx" rel="nofollow">MSDN.令我懊恼的是，虽然我可以轻松添加 Web 引用，但我无法找到我必须引用的程序集。有谁知道这是什么集会，以及我是否可以走正确的路线？永远感谢。

编辑 Silverlight 是客户端，所以显然我需要一种从服务器获取 SPUser 和 SPGroup 信息的方法。 WSS 服务似乎没有有用的方法。我现在尝试在 Sharepoint Designer 中创建一个页面并将其用作准 RESTful 服务。这是愚蠢的吗？我希望 Sharepoint 能够提供这项特殊的服务。

编辑 由于 SharePoint 2007 不允许 Silverlight 控件访问服务器端 API 元素（例如 SPUser），因此我提出了一个解决方案，在 InitParameters 中传递标志值。下面发布了。

Answer 1

我在 MOSS 中没有太多使用 Silverlight，但是您不能仅引用位于 12Hive/ISAPI 文件夹中的 Microsoft.SharePoint 程序集吗？

然后你可以使用

SPWeb web = SPContext.Current.Web;
SPGroup group = web.SiteGroups[groupName];

Answer 2

可以使用 silverlight 客户端对象模型。
请参阅 http://msdn.microsoft.com/en-us/library/ee538971。 ASPX
但：

第三种可能——修改客户端访问跨域策略
服务器 - 存在安全风险并且在 SharePoint 中不受支持
基金会2010。

因此这取决于您的设置以及您是否愿意开放跨域策略。

Answer 3

我发现MOSS（又名SharePoint 2007）没有访问客户端SPUser权限的机制。因此 SilverLight 控件没有直接方法来获取此信息。我的解决方案是修改托管 SilverLight 控件的 WebPart 以包含一个属性，该属性会将该信息作为 InitParams 之一传递给 SilverLight 控件。

目前，Web 上有许多用于托管 SilverLight 控件的 WebPart。这里有几个例子。

代码库
http://silverlightwebpart.codeplex.com/

柯克·埃文斯博客
http:// /blogs.msdn.com/b/kaevans/archive/2008/10/08/hosting-silverlight-in-a-sharepoint-webpart.aspx

有我的 WebPart 和本文中的 WebPart 有明显的相似之处。
http://blogs .msdn.com/b/andreww/archive/2009/03/12/silverlight-web-part-in-sharepoint.aspx

我决定做的是制作 WebPart 本身可配置

public class SecureSilverLightWebPart : Microsoft.SharePoint.WebPartPages.WebPart
{
    private int _controlWidth;
    [Personalizable(PersonalizationScope.Shared), WebBrowsable(true),
    WebDisplayName("Silverlight Control Width")]
    public int ControlWidth
    {
        get { return _controlWidth; }
        set { _controlWidth = value; }
    }
    private int _controlHeight;
    [Personalizable(PersonalizationScope.Shared), WebBrowsable(true), WebDisplayName("Silverlight Control Height")]
    public int ControlHeight
    {
        get { return _controlHeight; }
        set { _controlHeight = value; }
    }

    string _silverLightXapPath = string.Empty;
    [Personalizable(PersonalizationScope.Shared), WebBrowsable(true), WebDisplayName("SilverLight Xap file path"),
   WebDescription("Enter the SilverLight Xap File Name which will be downloaded at Runtime")]
    public string SilverLightXapPath
    {
        get { return _silverLightXapPath; }
        set { _silverLightXapPath = value; }
    }

    string _controlParameters = "";
    [Personalizable(PersonalizationScope.Shared), WebBrowsable(true), WebDisplayName("Parameters to SilverLight Application"),
   WebDescription("Enter Key Value Pair Parameters That Needs to be sent to SilverLight Application")]
    public string ControlParameters
    {
        get { return _controlParameters; }
        set { _controlParameters = value; }
    }

    private string _fullAccessGroup = "";
    [Personalizable(PersonalizationScope.Shared), WebBrowsable(true),
     WebDisplayName("Group membership required to enable Silverlight Application"),
     WebDescription("Enter the Sharepoint group required to enable this component.")]
    public string FullAccessGroup
    {
        get { return _fullAccessGroup; }
        set { _fullAccessGroup = value; }
    }

    // This method member checks whether the current
    // SharePoint user is a member of the group, groupName
    private bool IsMember(string groupName)
    {
        bool isMember;
        SPSite site = SPContext.Current.Web.Site;
        SPWeb web = site.OpenWeb();
        try
        {
            isMember = web.IsCurrentUserMemberOfGroup(web.Groups[groupName].ID);
        }
        catch (SPException ex)
        {
            isMember = false;
        }
        finally
        {
            web.Close();
            site.Close();
        }

        return isMember;
    }


    protected override void CreateChildControls()
    {
        base.CreateChildControls();

        if (_controlHeight != 0 && _controlWidth != 0 && _silverLightXapPath != string.Empty)
        {
            Silverlight sl = new Silverlight();

            sl.ID = "SlCoffee";

            if (ConfigurationSettings.AppSettings != null)
            {
                //In the Web.config for the Sharepoint site I have a key in the AppSettings
                //pointing to the where the Xap files are saved. Something
                //like <add key="SITEURL" value="http://MyServer:43746/XapFiles/" />
                if (ConfigurationSettings.AppSettings["SITEURL"] != string.Empty)
                {
                    string url = ConfigurationSettings.AppSettings["SITEURL"];
                    sl.Source = url + _silverLightXapPath;
                }
            }

            sl.Width = new Unit(_controlWidth);

            sl.Windowless = true;

            sl.Height = new Unit(_controlHeight);


            int SettingCount = ConfigurationSettings.AppSettings.Count;
            StringBuilder SB = new StringBuilder();

            //Optional
            for (int index = 0; index < SettingCount; index++)
            {
                //Most of the InitParams are kept in the AppSettings. You probably
                //wouldn't send all of your AppSettings to the control like this.
                if (ConfigurationSettings.AppSettings.GetKey(index).StartsWith("client"))
                {
                    SB.Append(ConfigurationSettings.AppSettings.GetKey(index));
                    SB.Append("=");
                    SB.Append(ConfigurationSettings.AppSettings[index]);
                    SB.Append(",");
                }
            }

            //This is the place in the code where SPUser and Group information is
            //sent to the SilverLight control hosted by this WebPart.
            SB.Append("UserId=" + SPContext.Current.Web.CurrentUser + ",");
            SB.Append(_controlParameters);

            //Security portion
            SB.Append("FullControl=" + IsMember(FullAccessGroup));

            sl.InitParameters = SB.ToString();

            Controls.Add(sl);
        }

    }

    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);

        ScriptManager sm = ScriptManager.GetCurrent(Page);

        if (sm == null)
        {
            sm = new ScriptManager();
            Controls.AddAt(0, sm);
        }
    }

    protected override void Render(HtmlTextWriter writer)
    {
        base.Render(writer);
        if (_controlHeight == 0 || _controlWidth == 0 || _silverLightXapPath == string.Empty)
        {
            writer.Write("<h3>Please Configure Web Part Properties<h3>");
        }
    }
}

接下来在 SilverLight 控件中我使用 Initparameters

/// <summary>
/// Handles the Loaded event of the MainPage control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.RoutedEventArgs"/> instance containing the event data.</param>
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
    if(UserMayEdit() )
    {
        // User is a member of the group set up in configuration of the WebPart.
        // enable any controls accordingly.
        TabItem_Backlog.IsEnabled = true;
    }
    else
    {
        // User is not a member - disable.
        TabItem_Backlog.IsEnabled = false;
        TabItem_Approved.IsSelected = true;
    }

    //...
}

/// <summary>
/// Checks input parameters to determine whether
/// users the may edit
/// </summary>
/// <returns></returns>
private bool UserMayEdit()
{
    bool bCardEditor = false;

    try
    {
        if (application.AppConfiguration["FullControl"].ToUpper() == "TRUE")
        {
            bCardEditor = true;
        }
    }
    catch (KeyNotFoundException)
    {
        MessageBox.Show("Please configure the component's security settings to enable the Active tab.", "PMDG Cards", MessageBoxButton.OK);
    }

    return bCardEditor;
}

SilverLight UserControl 中的字典存在于 App.xaml.cs 中，如下所示

public partial class App : Application
{
    public static string UserID = string.Empty;

    public IDictionary<string, string> AppConfiguration;
    public App()
    {
        this.Startup += this.Application_Startup;
        this.Exit += this.Application_Exit;
        this.UnhandledException += this.Application_UnhandledException;

        InitializeComponent();
    }

    private void Application_Startup(object sender, StartupEventArgs e)
    {
        AppConfiguration = e.InitParams;
        UserID = e.InitParams["UserId"];
        this.RootVisual = new MainPage();
    }
    //...
}

我能说什么呢？有用。