Question

我需要为列表的添加事件添加自定义处理。但是，该事件似乎没有被解雇。我想在EventReceivers中定义的自定义处理程序可以在将自定义类型的新项添加到列表时随时触发。我将不胜感激任何建议。这是我的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint;

namespace MyTestGroupListFeature
{
    class MyTestGroupListFeature : SPFeatureReceiver
    {
        private const string LISTNAME = "Acquisition Groups";
        private const string CONTENTTYPE_LISTNAME = "Contenttype List";
        private const string FOO = "FOO";
        private const string SITE_TEMPLATE_EXTENSION = ".stp";
    public override void FeatureInstalled
      (SPFeatureReceiverProperties properties)
    {
    }

    public override void FeatureUninstalling
       (SPFeatureReceiverProperties properties)
    {
        FeatureDeactivating(properties);
    }

    public override void FeatureActivated(SPFeatureReceiverProperties properties)
    {
        try
        {
            SPWeb web = properties.Feature.Parent as SPWeb;
            SPList list = GetList(web, LISTNAME);
            SPSite site = web.Site;
            site.AllowUnsafeUpdates = true;

            SPContentType newCType = CreateSourceSystemContentType(web);
            SPList listct = web.Lists[CONTENTTYPE_LISTNAME];
            AddEventReceiverToList(listct);
            AddContentTypeToList(web, listct, newCType);
        }
        catch       {  }
    }
    /// <summary>
    /// Creates a content type for Source System
    /// </summary>
    private SPContentType CreateSourceSystemContentType(SPWeb site)
    {
        //Create site columns
        string acronymFieldName = site.Fields.Add("Acronym", SPFieldType.Text, true);
        SPFieldText acronymField = (SPFieldText)site.Fields.GetFieldByInternalName(acronymFieldName);
        acronymField.Group = "AQSIDM Columns";
        acronymField.Update();
        string nameFieldName = site.Fields.Add("Name", SPFieldType.Text, true);
        SPFieldText nameField = (SPFieldText)site.Fields.GetFieldByInternalName(nameFieldName);
        acronymField.Group = "AQSIDM Columns";
        acronymField.Update();
        string descriptionFieldName = site.Fields.Add("Description", SPFieldType.Text, true);
        SPFieldText descriptionField = (SPFieldText)site.Fields.GetFieldByInternalName(descriptionFieldName);
        descriptionField.Group = "AQSIDM Columns";
        descriptionField.Update();
        // Get the parent content type. 
        SPContentTypeId itemCTID = new SPContentTypeId("0x01");
        SPContentType itemCT = site.AvailableContentTypes[itemCTID];
        //Create SourceSystem content type:
        SPContentType sourceSystemCT = new SPContentType(itemCT, site.ContentTypes, "Source System");
        sourceSystemCT.Group = "Source System Content Types";

        //Add columns to content type
        sourceSystemCT = site.ContentTypes[sourceSystemCT.Id];
        SPFieldLink acronymLink = new SPFieldLink(acronymField);
        sourceSystemCT.FieldLinks.Add(acronymLink);
        //
        SPFieldLink nameLink = new SPFieldLink(nameField);
        sourceSystemCT.FieldLinks.Add(nameLink);
        //
        SPFieldLink descriptionLink = new SPFieldLink(descriptionField);
        sourceSystemCT.FieldLinks.Add(descriptionLink);
        //
        //sourceSystemCT.Update();
        string assemblyName = System.Reflection.Assembly.GetEntryAssembly().FullName;
        string ctReceiverName = "MyTestGroupListFeature.EventReceivers";
        sourceSystemCT.EventReceivers.Add(SPEventReceiverType.ItemAdding, assemblyName, ctReceiverName);
        sourceSystemCT.Update(true);
        site.ContentTypes.Add(sourceSystemCT);
        return sourceSystemCT;
    }
    /// <summary>
    /// Adds a custom content type to site's list
    /// </summary>
    private void AddContentTypeToList(SPWeb web, SPList list, SPContentType ct)
    {
        list.ContentTypesEnabled = true;
        list.ContentTypes.Add(ct);
        list.Update();
        // Add the item:
        SPListItem newItem = list.Items.Add();
        newItem["Acronym"] = "Acronym Field Added";
        newItem.Update();
    }
    /// <summary>
    /// Programmatically add new event receivers
    /// </summary>
    private void AddEventReceiverToList(SPList list)
    {
        System.Reflection.Assembly assembly = System.Reflection.Assembly.GetExecutingAssembly();
        SPEventReceiverDefinition eventReceiver = list.EventReceivers.Add();
        eventReceiver.Name = "On Updating";
        eventReceiver.Type = SPEventReceiverType.ItemAdding;
        eventReceiver.SequenceNumber = 200;
        eventReceiver.Assembly = assembly.FullName;
        eventReceiver.Class = "MyTestGroupListFeature.EventReceivers";
        eventReceiver.Update();
    }


}

class EventReceivers : SPItemEventReceiver
{
    /// <summary>
    /// Test behavior when adding an item
    /// </summary>
    public override void ItemAdding(SPItemEventProperties properties)
    {
        base.ItemAdding(properties);
        SourceSystem ss = new SourceSystem();
        ss.Name = "sharepointss";
        ss.Acronym = "sharepoint acronym";
        ss.Description = "desc";
        ss.EndPoint = new Uri(@"\testURI");
        ss.Update("foo");
        ss.Create(String.Format("SourceSystem_Create_SP_{0:o}", DateTime.Now));
    }
}

}

Answer 1

激活该功能后，您是否验证了事件接收器是否已附加到列表中？这可以通过编程方式或使用SharePoint Manager等工具完成。

覆盖sharepoint列表事件

1 个答案: