<param name="Windowless" value="true" />

将调用silverlight页面的这句删除掉应该就能解决问题了

1.将<param name="Windowless" value="true" />以上代码注释（删除）操作，虽然可以输入中文，但是silverlight嵌套html将会报错？想要解决silverlight嵌套html问题、silverlight无法输入中文问题，只能是换一种实现方法。具体操作如下

1.自定义用户控件HtmlHost.cs

1 using System;  2 using System.Net;  3 using System.Windows;  4 using System.Windows.Controls;  5 using System.Windows.Documents;  6 using System.Windows.Ink;  7 using System.Windows.Input;  8 using System.Windows.Media;  9 using System.Windows.Media.Animation; 10 using System.Windows.Shapes; 11 using System.Windows.Markup; 12 using System.Windows.Browser; 13 using System.Threading; 14  15 namespace HtmlInSilverlight 16 { 17     [ContentProperty("SourceHtml")] 18     public class HtmlHost : FrameworkElement 19     { 20         public static readonly DependencyProperty SourceHtmlProperty = DependencyProperty.Register("SourceHtml", typeof(string), typeof(HtmlHost), new PropertyMetadata(string.Empty, new PropertyChangedCallback(HtmlHost.SourceHtmlChanged))); 21         public static readonly DependencyProperty SourceUriProperty = DependencyProperty.Register("SourceUri", typeof(Uri), typeof(HtmlHost), new PropertyMetadata(null, new PropertyChangedCallback(HtmlHost.SourceUriChanged))); 22         private HtmlDocument _document; 23         private HtmlElement _iframe; 24         private EventHandler _documentready; 25         private bool x9794bc5afbd6d4a3; 26         private bool xe3e0019204361915; 27         private HtmlElement _div; 28  29         public event EventHandler DocumentReady 30         { 31             add 32             { 33                 EventHandler handler2; 34                 EventHandler handler = this._documentready; 35                 do 36                 { 37                     handler2 = handler; 38                     EventHandler handler3 = (EventHandler)Delegate.Combine(handler2, value); 39                     handler = Interlocked.CompareExchange
      
       (ref this._documentready, handler3, handler2); 40                 } 41                 while (handler != handler2); 42             } 43             remove 44             { 45                 EventHandler handler2; 46                 EventHandler handler = this._documentready; 47                 do 48                 { 49                     handler2 = handler; 50                     EventHandler handler3 = (EventHandler)Delegate.Remove(handler2, value); 51                     handler = Interlocked.CompareExchange
       
        (ref this._documentready, handler3, handler2); 52                 } 53                 while (handler != handler2); 54             } 55         } 56  57         public HtmlHost() 58         { 59             base.Loaded += new RoutedEventHandler(this._Loaded); 60             base.SizeChanged += new SizeChangedEventHandler(this._SizeChanged); 61             base.LayoutUpdated += new EventHandler(this._LayoutUpdated); 62         } 63  64         protected virtual void OnDocumentReady(EventArgs e) 65         { 66             if (this._documentready != null) 67             { 68                 this._documentready(this, e); 69             } 70         } 71  72         private void _Refresh() 73         { 74             Rect rect; 75             Size renderSize; 76             double num = 0; 77             double num2 = 0; 78             double num4 = 0; 79             if (this._div == null) 80             { 81                 return; 82             } 83             goto Label_03E5; 84         Label_0010: 85             if (rect.Height > 0.0) 86             { 87                 goto Label_0148; 88             } 89         Label_0025: 90             this._div.SetStyleAttribute("visibility", "hidden"); 91             this._div.SetStyleAttribute("display", "none"); 92             if ((((uint)num4) + ((uint)num)) >= 0) 93             { 94                 goto Label_0219; 95             } 96             goto Label_0090; 97         Label_0069: 98             if (rect.Width <= 0.0) 99             {100                 goto Label_0025;101             }102             if (((uint)num2) >= 0)103             {104                 goto Label_0010;105             }106         Label_0090:107             if ((((uint)num) & 0) != 0)108             {109                 goto Label_0069;110             }111             if ((((uint)num) + ((uint)num4)) >= 0)112             {113                 goto Label_0010;114             }115             goto Label_0219;116         Label_0148:117             if (!this.xe3e0019204361915)118             {119                 HtmlPage.Document.Body.AppendChild(this._div);120                 this.xe3e0019204361915 = true;121                 goto Label_0194;122             }123         Label_0153:124             this._div.SetStyleAttribute("visibility", "visible");125             this._div.SetStyleAttribute("display", "inline");126             if ((((uint)num) & 0) != 0)127             {128                 goto Label_02A0;129             }130         Label_0194:131             num = rect.X;132             this._div.SetStyleAttribute("left", num.ToString() + "px");133             if ((((uint)num) + ((uint)num)) <= uint.MaxValue)134             {135                 this._div.SetStyleAttribute("top", rect.Y.ToString() + "px");136                 this._div.SetStyleAttribute("width", rect.Width.ToString() + "px");137                 this._div.SetStyleAttribute("height", rect.Height.ToString() + "px");138                 return;139             }140             if ((((uint)num2) + ((uint)num)) <= uint.MaxValue)141             {142                 goto Label_0090;143             }144         Label_0219:145             if (((uint)num2) >= 0)146             {147                 return;148             }149             goto Label_03E5;150         Label_02A0:151             if (renderSize.Width > 0.0)152             {153                 Size size2 = base.RenderSize;154                 if ((((uint)num4) + ((uint)num4)) <= uint.MaxValue)155                 {156                     if (0 != 0)157                     {158                         goto Label_0148;159                     }160                     while ((size2.Height > 0.0) && (base.Visibility == Visibility.Visible))161                     {162                         double num3 = 0;163                         Point location = base.TransformToVisual(Application.Current.RootVisual).Transform(new Point(0.0, 0.0));164                         rect = new Rect(location, base.RenderSize);165                         HtmlElement element = this.xe90f25b5dbb13eeb();166                         object property = element.GetProperty("offsetLeft");167                         if (property is double)168                         {169                             rect.X += (double)property;170                         }171                         object obj3 = element.GetProperty("offsetTop");172                         if (obj3 is double)173                         {174                             rect.Y += (double)obj3;175                             break;176                         }177                         if ((((uint)num4) - ((uint)num3)) <= uint.MaxValue)178                         {179                             break;180                         }181                         if ((((uint)num3) & 0) != 0)182                         {183                             goto Label_0153;184                         }185                     }186                     goto Label_0069;187                 }188             }189             else190             {191                 goto Label_0069;192             }193         Label_03A4: ;194             rect = new Rect(0.0, 0.0, 0.0, 0.0);195             renderSize = base.RenderSize;196             if ((((uint)num4) + ((uint)num)) <= uint.MaxValue)197             {198             }199             goto Label_02A0;200         Label_03E5:201             if (0 == 0)202             {203                 if (!HtmlPage.IsEnabled)204                 {205                     return;206                 }207                 goto Label_03A4;208             }209         }210 211         private void _Loaded(object sender, RoutedEventArgs e)212         {213             HtmlElement element;214             if (this.x9794bc5afbd6d4a3)215             {216                 return;217             }218             this.x9794bc5afbd6d4a3 = true;219             if (!HtmlPage.IsEnabled)220             {221                 goto Label_0026;222             }223             this._div = HtmlPage.Document.CreateElement("div");224             this._div.SetAttribute("id", "div" + this.GetHashCode());225             this._div.SetStyleAttribute("position", "absolute");226             this._div.SetStyleAttribute("visibility", "collapsed");227             element = this.xe90f25b5dbb13eeb();228             element.AttachEvent("onmove", new EventHandler(this._Moved));229             goto Label_004A;230         Label_0010:231             if (!Application.Current.Host.Settings.Windowless)232             {233                 //MessageBox.Show("Warning: The HtmlHost control should always be used with a windowless plugin. It cannot work reliably if this property is not specified.");234             }235         Label_0026:236             this.x8c7c45ccab715fbf();237             return;238         Label_0031:239             goto Label_0010;240         Label_004A:241             if (element != HtmlPage.Plugin)242             {243                 goto Label_0065;244             }245             if (-2147483648 != 0)246             {247                 goto Label_0010;248             }249             goto Label_0031;250         Label_0065:251             HtmlPage.Plugin.AttachEvent("onmove", new EventHandler(this._Moved));252             goto Label_0031;253         }254 255         private void IFrame_Loaded(object sender, EventArgs e)256         {257             HtmlWindow property = this._iframe.GetProperty("contentWindow") as HtmlWindow;258             do259             {260                 HtmlDocument document;261                 if (property != null)262                 {263                     document = property.GetProperty("document") as HtmlDocument;264                     if ((document == null))265                     {266                         return;267                     }268                 }269                 else270                 {271                     return;272                 }273                 this.Document = document;274             }275             while ((0 == 0) && (((0xff == 0) && (1 != 0)) || (0 != 0)));276         }277 278         private static void SourceUriChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)279         {280             ((HtmlHost)sender).x8c7c45ccab715fbf();281         }282 283         private void x8c7c45ccab715fbf()284         {285             if (!HtmlPage.IsEnabled)286             {287                 return;288             }289             goto Label_0107;290         Label_000F:291             this._Refresh();292             if (0 == 0)293             {294                 if (0 == 0)295                 {296                     return;297                 }298                 goto Label_0107;299             }300             goto Label_00E6;301         Label_0052:302             this._div.AppendChild(this.IFrame);303             this.IFrame.SetAttribute("src", this.SourceUri.ToString());304             goto Label_000F;305         Label_0080:306             this._div.RemoveChild((HtmlElement)this._div.Children[0]);307         Label_00AB:308             if (this._div.Children.Count > 0)309             {310                 goto Label_0080;311             }312             if (this.SourceUri == null)313             {314                 this._div.SetStyleAttribute("overflow", "auto");315                 this.SetDivHtml(this._div, this.SourceHtml);316                 if (0 == 0)317                 {318                     goto Label_000F;319                 }320             }321             else322             {323                 this._div.SetStyleAttribute("overflow", "hidden");324                 goto Label_0052;325             }326         Label_00E6:327             if ((0x7fffffff != 0) && (0x7fffffff != 0))328             {329                 goto Label_0080;330             }331             goto Label_0052;332         Label_0107:333             if (!this.x9794bc5afbd6d4a3)334             {335                 return;336             }337             goto Label_00AB;338         }339 340         private void _LayoutUpdated(object sender, EventArgs e)341         {342             this._Refresh();343         }344 345         private void _Moved(object sender, EventArgs e)346         {347             this._Refresh();348         }349 350         private HtmlElement xe90f25b5dbb13eeb()351         {352             HtmlElement element2;353             HtmlElement plugin = HtmlPage.Plugin;354             if (HtmlPage.Plugin.Parent.TagName.ToLower() == "div")355             {356                 if (HtmlPage.Plugin.Parent.Children.Count == 1)357                 {358                     return HtmlPage.Plugin.Parent;359                 }360                 if (HtmlPage.Plugin.Parent.Children.Count == 2)361                 {362                     if (HtmlPage.Plugin.Parent.Children[0] != HtmlPage.Plugin)363                     {364                         return plugin;365                     }366                     element2 = HtmlPage.Plugin.Parent.Children[1] as HtmlElement;367                     if (element2 == null)368                     {369                         return plugin;370                     }371                     if (!(element2.TagName.ToLower() == "iframe"))372                     {373                         return plugin;374                     }375                     return HtmlPage.Plugin.Parent;376                 }377                 return plugin;378             }379             return plugin;380         }381 382         private void _SizeChanged(object sender, SizeChangedEventArgs e)383         {384             this._Refresh();385         }386 387         private void SetDivHtml(HtmlElement _div, string html)388         {389             if (HtmlPage.BrowserInformation.Name == "Netscape")390             {391                 _div.SetProperty("innerHTML", html);392             }393             else394             {395                 _div.SetAttribute("innerHTML", html);396             }397         }398 399         private static void SourceHtmlChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)400         {401             ((HtmlHost)sender).x8c7c45ccab715fbf();402         }403 404         public HtmlDocument Document405         {406             get407             {408                 return this._document;409             }410             private set411             {412                 if (value != this._document)413                 {414                     this._document = value;415                     if (this._document == null)416                     {417                         return;418                     }419                     this.OnDocumentReady(EventArgs.Empty);420                 }421             }422         }423 424         public HtmlWindow Window425         {426             get427             {428                 HtmlWindow property = this._iframe.GetProperty("contentWindow") as HtmlWindow;429                 return property;430             }431         }432 433         public string SourceHtml434         {435             get436             {437                 return (string)base.GetValue(SourceHtmlProperty);438             }439             set440             {441                 base.SetValue(SourceHtmlProperty, value);442             }443         }444 445         public Uri SourceUri446         {447             get448             {449                 return (Uri)base.GetValue(SourceUriProperty);450             }451             set452             {453                 base.SetValue(SourceUriProperty, value);454             }455         }456 457         private HtmlElement IFrame458         {459             get460             {461                 if (this._iframe != null)462                 {463                     return this._iframe;464                 }465                 if (HtmlPage.IsEnabled)466                 {467                     this._iframe = HtmlPage.Document.CreateElement("iframe");468                     this._iframe.SetStyleAttribute("position", "absolute");469                     this._iframe.SetStyleAttribute("width", "100%");470                     this._iframe.SetStyleAttribute("height", "100%");471                     this._iframe.SetStyleAttribute("border", "0px");472                     this._iframe.SetAttribute("border", "0");473                     this._iframe.SetAttribute("frameBorder", "0");474                     this._iframe.AttachEvent("onload", new EventHandler(this.IFrame_Loaded));475                     HtmlPage.Document.Body.AppendChild(this._iframe);476                 }477                 return this._iframe;478             }479         }480     }481 }
       
      

2.将自定义用户控件引用到页面中MainPage.xaml

1 
      
        9 10     
       
        11         
        
         12             
         13             
         14             
        15             
        16         
        17 18     
       19 
      

这样就ok了。

注意：将.aspx中<param name="Windowless" value="true" />这段话注释或者删除。

 3.此做法可能还会出现异常

4.最终做法

Label_0153:            this._div.SetStyleAttribute("visibility", "visible");            this._div.SetStyleAttribute("display", "inline");            this._div.SetStyleAttribute("background", "White");            if ((((uint)num) & 0) != 0)            {                goto Label_02A0;            }

将这段代码替换HtmlHost.cs中的代码，与HtmlHost.cs类库不同的是 多加了

this._div.SetStyleAttribute("background", "White"); 具体什么原因，我也不清楚