C# XhtmlMobileTextWriter.WriteBeginTag方法代码示例

 private void RenderAsInputTypeImage(XhtmlMobileTextWriter writer) {
     ConditionalEnterStyle(writer, Style);
     writer.WriteBeginTag("input");
     writer.WriteAttribute("type", "image");
     writer.WriteAttribute("name", Control.UniqueID);
     writer.WriteAttribute("src", Control.ResolveUrl(Control.ImageUrl), true);
     writer.WriteAttribute("alt", Control.Text, true);
     ConditionalRenderClassAttribute(writer);
     ConditionalRenderCustomAttribute(writer, XhtmlConstants.AccessKeyCustomAttribute);
     writer.Write("/>");
     // ConditionalSetPendingBreak should always be called *before* ConditionalExitStyle.
     // ConditionalExitStyle may render a block element and clear the pending break.
     ConditionalSetPendingBreakAfterInline(writer);
     ConditionalExitStyle(writer, Style);
 }

        /// <include file='doc\XhtmlBasicTextBoxAdapter.uex' path='docs/doc[@for="XhtmlTextBoxAdapter.Render"]/*' />
        public override void Render(XhtmlMobileTextWriter writer) {
            ConditionalClearPendingBreak(writer);
            ConditionalEnterStyle(writer, Style);
            ConditionalRenderOpeningSpanElement(writer);

            if ((String) Device[XhtmlConstants.RequiresOnEnterForward] == "true") {
                writer.AddOnEnterForwardSetVar(Control.UniqueID, Control.Text);
            }
            
            writer.WriteBeginTag("input");

            writer.WriteAttribute("name", Control.UniqueID);

            ConditionalRenderCustomAttribute(writer, XhtmlConstants.AccessKeyCustomAttribute);
            String controlText = Control.Text;
            if (controlText != null && controlText.Length > 0 && !Control.Password) {
                writer.Write(" value=\"");
                writer.WriteEncodedText(controlText);
                writer.Write("\"");
            }

            if (Control.Size > 0) {
                writer.WriteAttribute("size", Control.Size.ToString(CultureInfo.InvariantCulture));
            }

            if (Control.MaxLength > 0) {
                writer.WriteAttribute("maxlength", Control.MaxLength.ToString(CultureInfo.InvariantCulture));
            }

            String requiresType = Device["requiresInputTypeAttribute"];
            if (Control.Password) {
                writer.WriteAttribute("type", "password");
            }
            // InvariantCulture not needed, but included for best practices.
            else if (requiresType != null && String.Equals(requiresType, "true", StringComparison.OrdinalIgnoreCase)) {
                writer.WriteAttribute("type", "text");
            }


            writer.Write("/>");
            // ConditionalSetPendingBreak should always be called *before* ConditionalExitStyle.
            // ConditionalExitStyle may render a block element and clear the pending break.
            ConditionalSetPendingBreakAfterInline(writer);            
            ConditionalRenderClosingSpanElement(writer);
            ConditionalExitStyle(writer, Style);
        }

        /// <include file='doc\XhtmlBasicImageAdapter.uex' path='docs/doc[@for="XhtmlImageAdapter.RenderImage"]/*' />
        protected virtual void RenderImage(XhtmlMobileTextWriter writer) {
            String source = Control.ImageUrl;
            writer.WriteBeginTag("img");
            if(source != null && source.Length > 0) {
                source = Page.Server.UrlPathEncode(Control.ResolveUrl(source.Trim()));
                writer.WriteAttribute("src", source, true);
                writer.AddResource(source);
            }

            String alternateText = Control.AlternateText;
            if (alternateText == null || alternateText.Length == 0) {
                alternateText = " "; // ASURT 143759 and VSWhidbey 78593
            }
            writer.WriteAttribute("alt", alternateText, true);
            
            // Review: Html adapter writes border=0 attribute, but don't need this here?
            writer.Write(" />");
        }

 // Render opening <div class=...> in case the stylesheet location has been specified as a physical file.
 /// <include file='doc\XhtmlBasicControlAdapter.uex' path='docs/doc[@for="XhtmlControlAdapter.ConditionalRenderOpeningDivElement"]/*' />
 protected virtual void ConditionalRenderOpeningDivElement(XhtmlMobileTextWriter writer) {
     if ((String)Device[XhtmlConstants.RequiresXhtmlCssSuppression] == "true") {
         return;
     }
     String classAttribute = (String) Control.CustomAttributes[XhtmlConstants.CssClassCustomAttribute];
     if (CssLocation == StyleSheetLocation.PhysicalFile) {
         writer.WriteLine();
         if ((String)Device["usePOverDiv"] == "true") {
             writer.WriteBeginTag("p");
         }
         else {
             writer.WriteBeginTag("div");
         }
         if (classAttribute != null && 
             classAttribute.Length > 0 &&
             writer.DiffersFromCurrentPhysicalCssClass(classAttribute)) {
             writer.WriteAttribute("class", classAttribute, true);
             writer.PushPhysicalCssClass(classAttribute);
             Debug.Assert(!_physicalCssClassPushed, "These calls should not be nested.");
             _physicalCssClassPushed = true;
         }
         writer.Write(">");
     }
 }

 /// <include file='doc\XhtmlBasicControlAdapter.uex' path='docs/doc[@for="XhtmlControlAdapter.RenderBeginLink"]/*' />
 protected virtual void RenderBeginLink(XhtmlMobileTextWriter writer, String target, String accessKey, Style style, String cssClass, String title) {
     writer.WriteBeginTag("a");
     writer.Write(" href=\"");
     RenderHrefValue (writer, target);
     writer.Write("\"");
     if (accessKey != null && accessKey.Length > 0) {
         writer.WriteAttribute("accesskey", accessKey, true);
     }
     if (CssLocation != StyleSheetLocation.PhysicalFile) {
         String className = writer.GetCssFormatClassName(style);
         if (className != null) {
             writer.WriteAttribute ("class", className);
         }
     }
     else if (cssClass != null && cssClass.Length > 0) {
         writer.WriteAttribute ("class", cssClass, true /* encode */);
     }
     if (title != null && title.Length > 0) {
         writer.WriteAttribute("title", title, true /* encode */);
     }
     writer.WriteLine(">");            
 }

        /// <include file='doc\XhtmlBasicFormAdapter.uex' path='docs/doc[@for="XhtmlFormAdapter.Render"]/*' />
        public override void Render (XhtmlMobileTextWriter writer) {
            // Note: <head>, <body> rendered by page adapter, as in HTML case.
            String formsAuthCookieName = FormsAuthentication.FormsCookieName;
            if(!Device.SupportsRedirectWithCookie)
            {
                if(formsAuthCookieName != null && formsAuthCookieName.Length > 0)
                {
                    HttpContext.Current.Response.Cookies.Remove(formsAuthCookieName);
                }
            }
            writer.WriteBeginTag ("form");
            writer.WriteAttribute ("id", Control.ClientID);
            writer.WriteAttribute ("method", Control.Method.ToString().ToLower(CultureInfo.CurrentCulture));
            writer.Write (" action=\"");
            RenderPostbackUrl(writer);
            if(Control.Action.Length > 0) {
                if(Control.Action.IndexOf("?", StringComparison.Ordinal) != -1) {
                    writer.Write("&");
                }
                else {
                    writer.Write("?");
                }
            }
            else {
                writer.Write("?");
            }
            writer.Write(Page.UniqueFilePathSuffix);

            if (Control.Method != FormMethod.Get &&
                Control.Action.Length == 0) {   // VSWhidbey 411176: We don't include QueryStringText if Action is explicitly set

                String queryStringText = PreprocessQueryString(Page.QueryStringText);
                if (queryStringText != null && queryStringText.Length > 0) {
                    String amp = (String)Device[XhtmlConstants.SupportsUrlAttributeEncoding] != "false"  ? "&amp;" : "&";
                    writer.Write(amp);
                    if((String)Device[XhtmlConstants.SupportsUrlAttributeEncoding] != "false") {
                        writer.WriteEncodedText(queryStringText);
                    }
                    else {
                        writer.Write(queryStringText);
                    }
                }
            }
            writer.WriteLine ("\">");
            bool needDivStyle = (String)Device[XhtmlConstants.RequiresXhtmlCssSuppression] != "true" &&
                (String)Device["supportsBodyClassAttribute"] == "false";
            if (!needDivStyle) {
                if((String)Device["usePOverDiv"] == "true")
                    writer.WriteFullBeginTag("p");
                else
                    writer.WriteFullBeginTag ("div");
            }
            else {
                if((String)Device["usePOverDiv"] == "true")
                    writer.EnterStyle(Style, "p");
                else
                    writer.EnterStyle (Style, "div");
            }
            RenderPostBackHeader (writer);
            // Renders hidden variables for IPostBackDataHandlers which are
            // not displayed due to pagination or secondary UI.
            RenderOffPageVariables(writer, Control, Control.CurrentPage);
            
            RenderChildren (writer);
            if (!needDivStyle) {
                if((String)Device["usePOverDiv"] == "true")
                    writer.WriteEndTag("p");
                else
                    writer.WriteEndTag ("div");
            }
            else {
                if((String)Device["usePOverDiv"] == "true")
                    writer.ExitStyle(Style);
                else
                    writer.ExitStyle (Style);
            }
            writer.WriteEndTag ("form");
        }

        /// <include file='doc\XhtmlBasicFormAdapter.uex' path='docs/doc[@for="XhtmlFormAdapter.RenderPagerTag"]/*' />
        protected virtual void RenderPagerTag(
            XhtmlMobileTextWriter writer,
            int pageToNavigate,
            String text,
            String accessKeyCustomAttribute) {
            writer.WriteBeginTag("input");

            // Specially encode the page number with the control id.
            // The corresponding code that handles postback should know how
            // to extract the page number correctly.
            writer.Write(" name=\"");
            writer.Write(Control.UniqueID);
            writer.Write(Constants.PagePrefix);
            writer.Write(pageToNavigate.ToString(CultureInfo.InvariantCulture));
            writer.Write("\"");

            writer.WriteAttribute("type", "submit");
            writer.WriteAttribute("value", text, true);
            ConditionalRenderCustomAttribute(writer, accessKeyCustomAttribute, XhtmlConstants.AccessKeyCustomAttribute);
            writer.Write("/>");
        }

        void RenderSelectElement (XhtmlMobileTextWriter writer) {
            
            if ((String)Device["supportsSelectFollowingTable"] == "false" && writer.CachedEndTag == "table") {
                writer.Write(" ");
            }

            ConditionalEnterStyle(writer, Style);
            writer.WriteBeginTag ("select");

            if (Control.SelectType == ListSelectType.MultiSelectListBox) {
                writer.WriteAttribute ("multiple", "multiple");
            }

            if (Control.SelectType == ListSelectType.ListBox || Control.SelectType == ListSelectType.MultiSelectListBox) {
                writer.WriteAttribute ("size", Control.Rows.ToString(CultureInfo.InvariantCulture));
            }

            writer.WriteAttribute ("name", Control.UniqueID);
            ConditionalRenderClassAttribute(writer);
            writer.Write (">");

            for (int itemIndex = 0; itemIndex < Control.Items.Count; itemIndex++) {
                MobileListItem item = Control.Items[itemIndex];
                writer.WriteBeginTag ("option");
                WriteItemValueAttribute (writer, itemIndex, item.Value);
                if (item.Selected && (Control.IsMultiSelect || itemIndex == Control.SelectedIndex)) {
                    writer.Write (" selected=\"selected\">");
                }
                else {
                    writer.Write (">");
                }
                writer.WriteEncodedText (item.Text);
                writer.WriteLine ("</option>");
            }
            ConditionalSetPendingBreak(writer);
            writer.WriteEndTag ("select");            
            writer.WriteLine ();      
            ConditionalPopPhysicalCssClass(writer);
            ConditionalExitStyle(writer, Style);
        }

        private void RenderItemsListWithoutTableTags(XhtmlMobileTextWriter writer)
        {
            if (Control.VisibleItemCount == 0) {
                return;
            }

            ConditionalRenderOpeningDivElement(writer);
            int startIndex = Control.FirstVisibleItemIndex;
            int pageSize = Control.VisibleItemCount;
            ObjectListItemCollection items = Control.Items;
            IObjectListFieldCollection allFields = Control.AllFields;
            int count = allFields.Count;

            int nextStartIndex =  startIndex + pageSize;
            int labelFieldIndex = Control.LabelFieldIndex;


            Style style = this.Style;
            Style labelStyle = Control.LabelStyle;
            String cssClass = GetCustomAttributeValue(XhtmlConstants.CssClassCustomAttribute);
            String labelClass = GetCustomAttributeValue(XhtmlConstants.CssLabelClassCustomAttribute); 
            if (labelClass == null || labelClass.Length == 0) {
                labelClass = cssClass;
            }
            ConditionalEnterStyle(writer, labelStyle);
            bool requiresLabelClassSpan = CssLocation == StyleSheetLocation.PhysicalFile && labelClass != null && labelClass.Length > 0;
            if (requiresLabelClassSpan) {
                writer.WriteBeginTag("span");
                writer.WriteAttribute("class", labelClass, true);
                writer.Write(">");
            }
            writer.Write(Control.AllFields[labelFieldIndex].Title);
            writer.SetPendingBreak();
            if (requiresLabelClassSpan) {
                writer.WriteEndTag("span");
            }
            ConditionalExitStyle(writer, labelStyle);
            writer.WritePendingBreak();

            bool hasDefaultCommand = HasDefaultCommand();
            bool onlyHasDefaultCommand = OnlyHasDefaultCommand();
            bool requiresDetailsScreen = !onlyHasDefaultCommand && HasCommands();
            // if there is > 1 visible field, need a details screen
            for (int visibleFields = 0, i = 0; !requiresDetailsScreen && i < count; i++) {
                visibleFields += allFields[i].Visible ? 1 : 0;
                requiresDetailsScreen = 
                    requiresDetailsScreen || visibleFields > 1;
            }   
            bool itemRequiresHyperlink = requiresDetailsScreen || hasDefaultCommand;
            bool itemRequiresMoreButton = requiresDetailsScreen && hasDefaultCommand;


            Style subCommandStyle = Control.CommandStyle;
            subCommandStyle.Alignment = style.Alignment;
            subCommandStyle.Wrapping = style.Wrapping;

            ConditionalEnterStyle(writer, style);
            for (int i = startIndex; i < nextStartIndex; i++) {
                ObjectListItem item = items[i];

                String accessKey = GetCustomAttributeValue(item, XhtmlConstants.AccessKeyCustomAttribute);
                String itemClass = GetCustomAttributeValue(item, XhtmlConstants.CssClassCustomAttribute);
                if (itemRequiresHyperlink) {

                    RenderPostBackEventAsAnchor(writer,
                        hasDefaultCommand ?
                        item.Index.ToString(CultureInfo.InvariantCulture) :
                        String.Format(CultureInfo.InvariantCulture, ShowMoreFormat, item.Index),
                        item[labelFieldIndex], accessKey, Style, cssClass);
                }
                else {
                    bool requiresItemClassSpan = CssLocation == StyleSheetLocation.PhysicalFile && itemClass != null && itemClass.Length > 0;
                    if (requiresItemClassSpan) {
                        writer.WriteBeginTag("span");
                        writer.WriteAttribute("class", itemClass, true);
                        writer.Write(">");
                    }
                    writer.Write(item[labelFieldIndex]);
                    if (requiresItemClassSpan) {
                        writer.WriteEndTag("span");
                    }
                }

                if (itemRequiresMoreButton) {
                    String commandClass = GetCustomAttributeValue(XhtmlConstants.CssCommandClassCustomAttribute);
                    BooleanOption cachedItalic = subCommandStyle.Font.Italic;
                    subCommandStyle.Font.Italic = BooleanOption.False;
                    ConditionalEnterFormat(writer, subCommandStyle);
                    if ((String)Device[XhtmlConstants.BreaksOnInlineElements] != "true") {
                        writer.Write(" [");
                    }
                    ConditionalExitFormat(writer, subCommandStyle);
                    subCommandStyle.Font.Italic = cachedItalic;
                    ConditionalEnterFormat(writer, subCommandStyle);
                    String controlMT = Control.MoreText;
                    String moreText = (controlMT == null || controlMT.Length == 0) ?
                        GetDefaultLabel(MoreLabel) :
                        controlMT;
                    RenderPostBackEventAsAnchor(writer,
                        String.Format(CultureInfo.InvariantCulture, ShowMoreFormat, item.Index), 
//.........这里部分代码省略.........

        // Render the details view
        /// <include file='doc\XhtmlBasicObjectListAdapter.uex' path='docs/doc[@for="XhtmlObjectListAdapter.RenderItemDetails"]/*' />
        protected virtual void RenderItemDetails(XhtmlMobileTextWriter writer, ObjectListItem item) {
            if (Control.AllFields.Count == 0) {
                return;
            }
            if (!Device.Tables) {
                RenderItemDetailsWithoutTableTags(writer, item);
                return;
            }


            Style labelStyle = Control.LabelStyle;
            Style subCommandStyle = Control.CommandStyle;
            Style subCommandStyleNoItalic = (Style)subCommandStyle.Clone();
            subCommandStyleNoItalic.Font.Italic = BooleanOption.False;

            writer.ClearPendingBreak(); // we are writing a block level element in all cases.
            ConditionalEnterLayout(writer, Style);
            writer.WriteBeginTag ("table");
            ConditionalRenderClassAttribute(writer);
            writer.Write(">");
            writer.Write("<tr><td colspan=\"2\">");
            ConditionalEnterStyle(writer, labelStyle);
            writer.WriteEncodedText (item[Control.LabelFieldIndex]);
            ConditionalExitStyle(writer, labelStyle);
            writer.WriteLine("</td></tr>");
            Color foreColor = (Color)Style[Style.ForeColorKey, true];
            RenderRule (writer, foreColor, 2);
            RenderItemFieldsInDetailsView (writer, item);
            RenderRule (writer, foreColor, 2);
            ConditionalPopPhysicalCssClass(writer);
            writer.WriteEndTag("table");
            ConditionalExitLayout(writer, Style);

            ConditionalEnterStyle(writer, subCommandStyleNoItalic);
            writer.Write("[&nbsp;");

            ObjectListCommandCollection commands = Control.Commands;
            String cssClass = GetCustomAttributeValue(XhtmlConstants.CssClassCustomAttribute);
            String subCommandClass = GetCustomAttributeValue(XhtmlConstants.CssCommandClassCustomAttribute);
            if (subCommandClass == null || subCommandClass.Length == 0) {
                subCommandClass = cssClass;
            }

            foreach (ObjectListCommand command in commands) {
                RenderPostBackEventAsAnchor(writer, command.Name, command.Text, null /* accessKey */, subCommandStyle, subCommandClass);
                writer.Write("&nbsp;|&nbsp;");
            }
            String controlBCT = Control.BackCommandText;
            String backCommandText = (controlBCT == null || controlBCT.Length == 0) ?
                GetDefaultLabel(BackLabel) :
                controlBCT;

            RenderPostBackEventAsAnchor(writer, BackToList, backCommandText, null /* accessKey */, subCommandStyle, subCommandClass);
            writer.Write("&nbsp;]");
            ConditionalExitStyle(writer, subCommandStyleNoItalic);
        }

 private void ConditionalRenderStyleElement (XhtmlMobileTextWriter writer) {
     if (!writer.IsStyleSheetEmpty () && CssLocation == StyleSheetLocation.Internal) {
         bool requiresComments = (String)Device["requiresCommentInStyleElement"] == "true";
         writer.WriteLine();
         writer.WriteBeginTag("style");
         writer.Write(" type=\"text/css\">");
         writer.WriteLine();
         if (requiresComments) {
             writer.WriteLine("<!--");
         }
         writer.Write(writer.GetStyles());
         if (requiresComments) {
             writer.WriteLine("-->");
         }
         writer.WriteEndTag("style");
         writer.WriteLine(); 
     }
 }

        private void ConditionalRenderLinkElement (XhtmlMobileTextWriter writer) {
            if (DoesDeviceRequireCssSuppression()) {
                return;
            }

            String cssLocation = (String) Page.ActiveForm.CustomAttributes[XhtmlConstants.StyleSheetLocationCustomAttribute];
            if (cssLocation != null &&
                cssLocation.Length != 0) {
                writer.WriteBeginTag ("link");
                writer.WriteAttribute ("type", "text/css");
                writer.WriteAttribute ("rel", "stylesheet");
                writer.WriteAttribute("href", cssLocation, true);
                writer.WriteLine("/>");
            }
            else if (!writer.IsStyleSheetEmpty () && CssLocation!=StyleSheetLocation.Internal) {
                writer.WriteLine ();
                writer.WriteBeginTag ("link");
                writer.WriteAttribute ("type", "text/css");
                writer.WriteAttribute ("rel", "stylesheet");
                String queryStringValue = GetCssQueryStringValue(writer);
                writer.Write(" href=\"" + XhtmlConstants.CssMappedFileName + "?" + XhtmlConstants.CssQueryStringName + "=" + queryStringValue + "\"/>");
                writer.WriteLine();
            }
        }

 private void RenderAsInputTypeSubmit(XhtmlMobileTextWriter writer){
     ConditionalEnterStyle(writer, Style);
     writer.WriteBeginTag("input");
     writer.WriteAttribute("type", "submit");
     writer.WriteAttribute("name", Control.UniqueID);
     writer.WriteAttribute("value", Control.Text, true);
     ConditionalRenderClassAttribute(writer);
     ConditionalRenderCustomAttribute(writer, XhtmlConstants.AccessKeyCustomAttribute);
     writer.Write("/>");
     // ConditionalSetPendingBreak should always be called *before* ConditionalExitStyle.
     // ConditionalExitStyle may render a block element and clear the pending break.
     ConditionalSetPendingBreakAfterInline(writer);
     ConditionalPopPhysicalCssClass(writer);
     ConditionalExitStyle(writer, Style);
 }

        /// <include file='doc\XhtmlBasicPhoneCallAdapter.uex' path='docs/doc[@for="XhtmlPhoneCallAdapter.Render"]/*' />
        public override void Render(XhtmlMobileTextWriter writer)
        {
            ConditionalClearPendingBreak(writer);
            Style style = Style;
            StyleFilter filter = writer.CurrentStyleClass.GetFilter(style);
            if ((filter & XhtmlConstants.Layout) != 0) {
                ConditionalEnterLayout(writer, style);
            }
            if (Device.CanInitiateVoiceCall) {
                String text = Control.Text;
                String phoneNumber = Control.PhoneNumber;

                if (text == null || text.Length == 0) {
                    text = phoneNumber;
                }

                writer.WriteBeginTag("a");

                if ((String)Device["supportsWtai"] == "true") {
                    writer.Write(" href=\"wtai://wp/mc;");
                }
                else {
                    writer.Write(" href=\"tel:");
                }

                foreach (char ch in phoneNumber) {
                    if (ch >= '0' && ch <= '9' || ch == '#' || ch == '+') {
                        writer.Write(ch);
                    }
                }
                writer.Write("\"");
                ConditionalRenderCustomAttribute(writer, XhtmlConstants.AccessKeyCustomAttribute);
                String cssClass = GetCustomAttributeValue(XhtmlConstants.CssClassCustomAttribute);
                if (CssLocation != StyleSheetLocation.PhysicalFile) {
                    String className = writer.GetCssFormatClassName(style);
                    if (className != null) {
                        writer.WriteAttribute ("class", className);
                    }
                }
                else if (cssClass != null && cssClass.Length > 0) {
                    writer.WriteAttribute ("class", cssClass, true /* encode */);
                }
                writer.Write(">");
                writer.WriteEncodedText(text);
                writer.WriteEndTag("a");
                ConditionalSetPendingBreakAfterInline(writer);
            }
            else {
                // Format the text string based on properties
                String text = String.Format(
                    CultureInfo.CurrentCulture,
                    Control.AlternateFormat,
                    Control.Text,
                    Control.PhoneNumber);
                String url = Control.AlternateUrl;

                // If URI specified, create a link.  Otherwise, only text is displayed.
                if (url != null && url.Length > 0) {
                    String cssClass = GetCustomAttributeValue(XhtmlConstants.CssClassCustomAttribute);
                    String accessKey = GetCustomAttributeValue(XhtmlConstants.AccessKeyCustomAttribute);
                    RenderBeginLink(writer, url, accessKey, style, cssClass);
                    writer.WriteEncodedText(text);
                    RenderEndLink(writer);
                    ConditionalSetPendingBreakAfterInline(writer);
                }
                else {
                    writer.WritePendingBreak();
                    ConditionalEnterFormat(writer, style);
                    ConditionalRenderOpeningSpanElement(writer);
                    writer.WriteEncodedText(text);
                    ConditionalRenderClosingSpanElement(writer);
                    ConditionalExitFormat(writer, style);
                    ConditionalSetPendingBreak(writer);
                }
            }
            if ((filter & XhtmlConstants.Layout) != 0) {
                ConditionalExitLayout(writer, style);
            }
        }

        /////////////////////////////////////////////////////////////////////////
        // SPECIALIZED UTILITY METHODS FOR LIST SELECTIONLIST OBJECTLIST
        /////////////////////////////////////////////////////////////////////////

        // tagname can be any of table, ul, ol.  See the list adapters for examples.
        /// <include file='doc\XhtmlBasicControlAdapter.uex' path='docs/doc[@for="XhtmlControlAdapter.RenderOpeningListTag"]/*' />
        protected virtual void RenderOpeningListTag(XhtmlMobileTextWriter writer, String tagName) {            
            String classAttribute = (String) Control.CustomAttributes[XhtmlConstants.CssClassCustomAttribute];
            if (CssLocation == StyleSheetLocation.PhysicalFile && (String)Device[XhtmlConstants.RequiresXhtmlCssSuppression] != "true") {
                writer.WritePendingBreak();
                writer.WriteBeginTag(tagName);            
                if (classAttribute != null && 
                    classAttribute.Length > 0 &&
                    writer.DiffersFromCurrentPhysicalCssClass(classAttribute)) {
                    writer.WriteAttribute("class", classAttribute, true);
                    writer.PushPhysicalCssClass(classAttribute);
                    Debug.Assert(!_physicalCssClassPushed, "These calls should not be nested.");
                    _physicalCssClassPushed = true;
                }
                writer.Write(">");
            }
            else if ((String)Device[XhtmlConstants.RequiresXhtmlCssSuppression] != "true") {
                writer.WritePendingBreak();
                StyleFilter filter = writer.CurrentStyleClass.GetFilter(Style);
                writer.EnterStyle(new XhtmlFormatStyleClass(Style, filter), tagName);
            }
            else {
                writer.WritePendingBreak();
                writer.WriteFullBeginTag(tagName);
            }
        }