替换SharePoint列表项默认的New/Edit/Disp webpart

目前我有一个sharepoint解决方案，包含sharepoint列表的新建/编辑/删除表单的自定义webpart。到目前为止，我通过手动导航到这些页面并通过gui插入它们来将列表指向这些webpart。我现在的问题是，我如何通过c#自动化这个过程?是否可以用我自己的自定义webparts替换默认的列表项表单?我的尝试如下，根据这个链接。

我已经创建了一个事件接收器来处理这个

代码:

    public override void FeatureInstalled(SPFeatureReceiverProperties properties)
    {
        using (SPSite sp_Site = new SPSite("http://root/site/Lists"))
        {
            string err = string.Empty;
            using (SPWeb sp_Web = sp_Site.OpenWeb())
            {
                XmlTextReader reader = new XmlTextReader(new StringReader(sp_Web.GetFileAsString("http://root/_catalogs/wp/myWebPart.webpart")));
                SPLimitedWebPartManager wpm = sp_Web.GetLimitedWebPartManager("http://root/site/Lists/MyList/DispForm.aspx", System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared);
                WebPart wp = (WebPart)wpm.ImportWebPart(reader, out err);
                wpm.AddWebPart(wp, "Main", 0);
                wpm.SaveChanges(wp);
            }
        }

我目前无法调试这个，因为错误Error occurred in deployment step 'Add Solution': <nativehr>0x80070002</nativehr><nativestack></nativestack>

我这样做对吗?还有别的办法吗?

public override void FeatureActivated(SPFeatureReceiverProperties properties)
{
    // do stuff  
}