HtmlEditorExtender除去预标签

Question

由于HtmlEditorExtender没有报价系统，因此我编写了自己的报价系统。还是它有？

asp.net 4.5和ASP.NET AJAX Control Toolkit的16.1.0.0

2016年我们仍然没有白名单功能？

对于引用，我使用的是预标签。但是，最新的HtmlEditorExtender版本16.1.0将pre标签划掉。它只是删除包含预标签的部分。

我的意思是像

<pre><pre>CeFurkan: Wrote</pre>dsfsdfs</pre> 

这是张贴到服务器之前在客户端中删除。我怎样才能让这个标签？

我也试图与跨度类= “MyClass的”，并去除了类标签此时

我的设置

代码背后

htmlEditorExtender1.EnableSanitization = true; 

前码

<ajaxToolkit:HtmlEditorExtender ID="htmlEditorExtender1" TargetControlID="txtMessageBody" 
        runat="server" DisplaySourceTab="True"> 
        <Toolbar> 
         <ajaxToolkit:Undo /> 
         <ajaxToolkit:Redo /> 
         <ajaxToolkit:Bold /> 
         <ajaxToolkit:Italic /> 
         <ajaxToolkit:Underline /> 
         <ajaxToolkit:StrikeThrough /> 
         <ajaxToolkit:Subscript /> 
         <ajaxToolkit:Superscript /> 
         <ajaxToolkit:JustifyLeft /> 
         <ajaxToolkit:JustifyCenter /> 
         <ajaxToolkit:JustifyRight /> 
         <ajaxToolkit:JustifyFull /> 
         <ajaxToolkit:InsertOrderedList /> 
         <ajaxToolkit:InsertUnorderedList /> 
         <ajaxToolkit:CreateLink /> 
         <ajaxToolkit:UnLink /> 
         <ajaxToolkit:RemoveFormat /> 
         <ajaxToolkit:SelectAll /> 
         <ajaxToolkit:UnSelect /> 
         <ajaxToolkit:Delete /> 
         <ajaxToolkit:Cut /> 
         <ajaxToolkit:Copy /> 
         <ajaxToolkit:Paste /> 
         <ajaxToolkit:BackgroundColorSelector /> 
         <ajaxToolkit:ForeColorSelector /> 
         <ajaxToolkit:FontNameSelector /> 
         <ajaxToolkit:FontSizeSelector /> 
         <ajaxToolkit:Indent /> 
         <ajaxToolkit:Outdent /> 
         <ajaxToolkit:InsertHorizontalRule /> 
         <ajaxToolkit:HorizontalSeparator /> 
        </Toolbar> 
       </ajaxToolkit:HtmlEditorExtender> 

和web配置

<ajaxControlToolkit useStaticResources="true" renderStyleLinks="false" htmlSanitizer="AjaxControlToolkit.HtmlEditor.Sanitizer.DefaultHtmlSanitizer, AjaxControlToolkit.HtmlEditor.Sanitizer" /> 

完整的错误它给当尤里的答案试图

Value cannot be null. 
Parameter name: type 
Stack: 
    at System.Activator.CreateInstance(Type type, Boolean nonPublic) 
    at System.Activator.CreateInstance(Type type) 
    at AjaxControlToolkit.HtmlEditorExtender.CreateSanitizer() 
    at System.Lazy`1.CreateValue() 
    at System.Lazy`1.LazyInitValue() 
    at System.Lazy`1.get_Value() 
    at AjaxControlToolkit.HtmlEditorExtender.get_Sanitizer() 
    at AjaxControlToolkit.HtmlEditorExtender.OnInit(EventArgs e) 
    at System.Web.UI.Control.InitRecursive(Control namingContainer) 
    at System.Web.UI.Control.InitRecursive(Control namingContainer) 
    at System.Web.UI.Control.InitRecursive(Control namingContainer) 
    at System.Web.UI.Control.InitRecursive(Control namingContainer) 
    at System.Web.UI.Control.InitRecursive(Control namingContainer) 
    at System.Web.UI.Control.InitRecursive(Control namingContainer) 
    at System.Web.UI.Control.InitRecursive(Control namingContainer) 
    at System.Web.UI.Control.InitRecursive(Control namingContainer) 
    at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) 

类实现

Answer 1

在我看来，最简单的方法是创建自己的实现IHtmlSanitizer的继承DefaultHtmlSanitizer并覆盖GetSafeHtmlFragment方法如下

public class MyHtmlSanitizer : DefaultHtmlSanitizer, IHtmlSanitizer 
{ 
    private static readonly string[] whiteListTags = (ConfigurationManager.AppSettings["whiteListTags"] ?? "").Split(','); 

    string IHtmlSanitizer.GetSafeHtmlFragment(string htmlFragment, Dictionary<string, string[]> whiteList) 
    { 
     foreach (var tag in whiteListTags) 
     { 
      if (!whiteList.ContainsKey(tag)) 
       whiteList.Add(tag, new string[0]); 
     } 

     return base.GetSafeHtmlFragment(htmlFragment, whiteList); 

    } 
} 

然后加入到web.config中的appSettings部分设置自己的标签白名单：

<appSettings> 
    <add key="whiteListTags" value="pre"/> 
</appSettings> 

并配置工具来使用此清洁剂，而不是默认：

<ajaxControlToolkit 
    useStaticResources="true" 
    renderStyleLinks="false" 
    htmlSanitizer="AjaxControlToolkit.Customization.MyHtmlSanitizer, AjaxControlToolkit.Customization" 
    tempFolder="~/Temp"/>