用于创建文件夹SharePoint2010的EventReceiver

Question

我有这个事件接收器c#类，我正试图在Sharepoint站点上实现它。它没有起作用。我已经从visual studio 2010部署了它，在它构建正常之后。有没有人看到问题出在哪里？代码正确吗？或者问题出在SP上？谢谢。-这是新的代码

    using System;
using System.Security.Permissions;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Security;
using Microsoft.SharePoint.Utilities;
using Microsoft.SharePoint.Workflow;

namespace EventReceiverCFolder.EventReceiver1
{
    /// <summary>
    /// List Item Events
    /// </summary>
    public class EventReceiver1 : SPItemEventReceiver
    {
        /// <summary>
        /// An item is being added.
        /// </summary>
        public override void ItemAdded(SPItemEventProperties properties)
        {

            try
            {
                if (properties.ListTitle == "CF") // list where the item was added 
                { // if item was added to this list then create a folder on -  Dlib - list
                    UpdateFolder(properties);
                }
            }
            catch (Exception ex)
            {
                properties.Status = SPEventReceiverStatus.CancelWithError;
                properties.ErrorMessage = ex.Message;
                properties.Cancel = true;
            }
        }

        private void UpdateFolder(SPItemEventProperties properties)
        {
            string foldername = properties.ListItem["Title"].ToString();

            try
            {
                SPSecurity.RunWithElevatedPrivileges(delegate()
                {
                    //inside RunWithElevatedPriviliges I need to open a new site (an elevated site) 
                    using (SPSite site = new SPSite(properties.Web.Site.ID))
                    {
                        using (SPWeb web = site.OpenWeb())
                        {
                            web.AllowUnsafeUpdates = true;
                            SPList list = web.Lists.TryGetList("DLib"); // this is doc Library where the new folder will be created
                            //note that we are creating a list item, not a folder - a folder IS a list item 
                            SPListItem createdFolder = list.Items.Add(list.RootFolder.ServerRelativeUrl, SPFileSystemObjectType.Folder, null);
                            if (createdFolder != null)
                            {
                            createdFolder["Name"] = foldername;
                                createdFolder.Update();
                            }
                            list.Update();
                        }
                    }
                });
            }
            finally { }
        }
    }
}

Answer 1

我必须像这样获取文件夹名称：

string foldername = Convert.ToString(properties.AfterProperties["Title"]);

Answer 2

不要这样做：SPUser privilegedAccount = properties.Web.AllUsers[@"SHAREPOINT\SYSTEM"];阅读了使用SPSecurity.RunWithElevatedPrivileges的相关知识。请参阅MSDN documentation here。

也不要使用(SPSite...在using代码块中，您尝试通过SPContext.Current获取web -该web将不再被提升。

正确的方法是这样的(我没有尝试过，所以它只是给你一个想法)：

private void UpdateFolder(SPItemEventProperties properties)
{
    string foldername = properties.ListItem["Title"].ToString();

    SPSecurity.RunWithElevatedPrivileges(delegate()
    {
            //inside RunWithElevatedPriviliges I need to open a new site (an elevated site)
        using (SPSite site = new SPSite(properties.Web.Site.ID))
        {
            using (SPWeb web = site.OpenWeb())
            {
                web.AllowUnsafeUpdates = true;
                SPList list = web.Lists.TryGetList("ListTitle"); //is that really the list title?
                //note that we are creating a list item, not a folder - a folder IS a list item
                SSPListItem createdFolder = list.Items.Add(list.RootFolder.ServerRelativeUrl, SPFileSystemObjectType.Folder, null);
                if (newFolder != null)
                {
                    createdFolder["Name"] = foldername;
                    createdFolder.Update();
                }
                list.Update();
            }
        }
    });
}

还要试着调试你的代码，设置断点等。

Answer 3

你试过调试它吗？试着调试并告诉我们你得到的是什么错误。但在调试之前，请先使用sharepoint manager查看事件接收器是否已正确连接。

如果您不知道如何调试sharepoint，请使用see this