c# - 如何在 asp.net mvc 应用程序中附加 APPS 所需的共享点参数？

Question

根据 Sharepoint 应用程序的文档，我们需要始终附加 SP 主机 Web URL，以便应用程序可以从主机 Web 获取上下文。

Sharepoint 上下文提供程序和 token 帮助类自动检测此查询字符串值并创建上下文。

在我的 asp.net mvc sharepoint 应用程序中，我有以下代码:

 public ActionResult InstallDesignPackage()
{
    // Use TokenHelper to get the client context and Title property.
    // To access other properties, the app may need to request permissions
    // on the host web.
    var spContext = SharePointContextProvider.Current.GetSharePointContext(HttpContext);
    // Publishing feature GUID to use the infrastructure for publishing
    Guid PublishingFeature = Guid.Parse("f6924d36-2fa8-4f0b-b16d-06b7250180fa");
    // The site-relative URL of the design package to install.
    // This sandbox design package should be uploaded to a document library
    // for practical purpose this can be a configuration setting in web.config.
    string fileRelativePath = @"/sites/devsite/brand/Dev.wsp";
    //string fileUrl = @"https://xxx.sharepoint.com/_catalogs/solutions/LV%20Team%20Site%20Design%20Package-1.0.wsp";
    using (var clientContext = spContext.CreateUserClientContextForSPHost())
    {
        // Load the site context explicitly or while installing the API, the path for
        // the package will not be resolved.
        // If the package cannot be found, an exception is thrown.
        var site = clientContext.Site;
        clientContext.Load(site);
        clientContext.ExecuteQuery();
        // Validate whether the Publishing feature is active.
        if (Helpers.FeatureHelper.IsSiteFeatureActivated(clientContext, PublishingFeature))
        {
            DesignPackageInfo info = new DesignPackageInfo()
            {
                PackageGuid = Guid.Empty,
                MajorVersion = 1,
                MinorVersion = 1,
                PackageName = "Dev"
            };
            Console.WriteLine("Installing design package ");
            DesignPackage.Install(clientContext, clientContext.Site, info, fileRelativePath);
            clientContext.ExecuteQuery();
            Console.WriteLine("Applying design package");
            DesignPackage.Apply(clientContext, clientContext.Site, info);
            clientContext.ExecuteQuery();
        }
    }
    return View();
}

它只是从主机 Web 获取未隐藏的共享点列表。

但是，这当然不是我应用程序中的唯一页面，我想导航到其他页面。

在 asp.net mvc 中，我看到它们呈现这样的链接:

<div class="navbar">
    <div class="container">
        <ul class="nav navbar-nav">
            <li>@Html.ActionLink("About", "About", "Home")</li>
            <li>@Html.ActionLink("Contact", "Contact", "Home")</li>
<li>@Html.ActionLink("Install Design Package", "InstallDesignPackage", "Home")</li>

        </ul>
    </div>
</div>

当您检查它生成的链接时，它不使用查询字符串 SPHostUrl检查下面的屏幕截图，检查屏幕截图底部生成的链接，您会看到它没有查询字符串参数，这意味着我无法获得共享点上下文。

问题是:我怎样才能以正确的方式呈现链接，以便它们始终在所有页面中获得正确的查询字符串参数和值？？

Answer 1

几天后，这很简单，但真的很难找到与我遇到的问题相同的资源。

第一。 Controller Action 需要用这个属性包围

 [SharePointContextFilter]

第二。需要以这种方式生成操作链接。

<li>@Html.ActionLink("Install Design Package", "InstallDesignPackage", "Home", new { SPHostUrl = SharePointContext.GetSPHostUrl(HttpContext.Current.Request).AbsoluteUri },null)</li>

如果您想阅读整个故事，我已将其记录在我的博客上: http://levalencia-public.sharepoint.com/Pages/2014/03/Sharepoint-App---ASP-NET-MVC-Navigation-Link-with-correct-querystring-parameters.aspx