Sitecore 的 Facebook Like 按钮

Question

我使用 Facebook 评论和点赞框，它们可以工作，但点赞按钮不起作用。当我想添加子布局时，我收到“发生错误”消息。我检查了日志，异常消息是

Exception: System.InvalidOperationException
Message: Attempt to write to read-only property: Font. Declaring type: System.Web.UI.WebControls.WebControl
Source: Sitecore.Kernel
   at Sitecore.Reflection.ReflectionUtil.SetProperty(Object obj, PropertyInfo property, Object value)
   at Sitecore.Reflection.ReflectionUtil.SetProperty(Object obj, String name, Object value)
   at Sitecore.Data.Items.RenderingItem.SetParameters(Object control, String parameters)
   at Sitecore.Data.Items.RenderingItem.GetControl(RenderingSettings settings, XmlNode controlNode)
   at Sitecore.Layouts.RenderingReference.GetControl()
   at Sitecore.Nexus.Web.NexusPlaceholderApi.(Placeholder placeholder)
   at Sitecore.Nexus.Web.NexusPlaceholderApi.CreateChildControls(Placeholder placeholder)
   at System.Web.UI.Control.EnsureChildControls()
   at Sitecore.Layouts.PageContext.Expander.Expand(Control control)
   at Sitecore.Layouts.PageContext.Expander.Expand(Control control)
   at Sitecore.Web.UI.WebControls.Sublayout.CreateChildControls()
   at System.Web.UI.Control.EnsureChildControls()
   at Sitecore.Layouts.PageContext.Expander.Expand(Control control)
   at Sitecore.Nexus.Web.NexusPlaceholderApi.(Placeholder placeholder)
   at Sitecore.Nexus.Web.NexusPlaceholderApi.CreateChildControls(Placeholder placeholder)
   at System.Web.UI.Control.EnsureChildControls()
   at Sitecore.Layouts.PageContext.Expander.Expand(Control control)
   at Sitecore.Layouts.PageContext.Expander.Expand(Control control)
   at Sitecore.Layouts.PageContext.Expander.Expand(Control control)
   at Sitecore.Layouts.PageContext.Build()
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Layouts.PageContext.BuildControlTree(Object sender, EventArgs e)
   at System.Web.UI.Page.PerformPreInit()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

喜欢按钮有字体，我删除了它，但我得到了同样的错误。谁能帮我

它在子布局中，子布局

ascx side;

<div id="fb-root"></div><script src="http://connect.facebook.net/en_US/all.js#xfbml=1"></script>
<asp:Literal runat="server" ID="fbLikeButton"></asp:Literal>

ascx.cs side;

Sublayout slb = (Sublayout)this.Parent;
System.Collections.Specialized.NameValueCollection parameters = Sitecore.Web.WebUtil.ParseUrlParameters(slb.Parameters);
fbLikeButton.Text = "<fb:like href=\"";
fbLikeButton.Text += parameters["Url"];
fbLikeButton.Text += "\" send=\"true";
fbLikeButton.Text += "\" width=\"";
fbLikeButton.Text += parameters["Width"];
fbLikeButton.Text += "\" show_faces=\"true";
fbLikeButton.Text += "\" action=\"like";
//fbLikeButton.Text += "\" font=\"";
//fbLikeButton.Text += parameters["Font"];
fbLikeButton.Text += "\"></fb:like>";

Answer 1

我从来没有做过 facebook 集成，但是...我会在这里猜测：

什么是 ？这肯定不是一个有效的 HTML 标签...看来您正在尝试在 asp Literal 的内容中输出服务器标签，这是行不通的。 ASP.NET 只解析代码一次...因此它无法实例化控件，除非它在 ​​ascx 中显式定义。假设您已在某处定义为控件，请在 ascx 中执行类似以下操作：

<fb:like runat="server" send="true" action="like" width=<%=GetParameter("Width")%> href=<%=GetParameter("Url")%>></fb:like>

然后在代码隐藏中定义 GetParameter() 方法。

Answer 2

你的 ascx 有 Font 属性吗？ Sitecore 似乎正在尝试根据 Font 参数的存在，使用反射来设置该属性的值。为参数使用不同的名称，或者允许字体属性可写。