C# TableCell.RenderBeginTag方法代码示例

		void WriteTitle (HtmlTextWriter writer)
		{
			TableCell cellNextPrev = null;
			TableCell titleCell = new TableCell ();
			Table tableTitle = new Table ();

			writer.RenderBeginTag (HtmlTextWriterTag.Tr);

			titleCell.ColumnSpan = HasWeekSelectors (SelectionMode) ? 8 : 7;

			if (titleStyle != null && !titleStyle.IsEmpty && !titleStyle.BackColor.IsEmpty) {
				titleCell.BackColor = titleStyle.BackColor;
			} else {
				titleCell.BackColor = Color.Silver;
			}

			titleCell.RenderBeginTag (writer);

			// Table
			tableTitle.Width =  Unit.Percentage (100);
			if (titleStyle != null && !titleStyle.IsEmpty) {
				tableTitle.ApplyStyle (titleStyle);
			}

			tableTitle.RenderBeginTag (writer);
			writer.RenderBeginTag (HtmlTextWriterTag.Tr);

			if (ShowNextPrevMonth) { // Previous Table Data
				cellNextPrev = new TableCell ();
				cellNextPrev.ApplyStyle (nextPrevStyle);
				cellNextPrev.Width = Unit.Percentage (15);

				DateTime date = GetGlobalCalendar().AddMonths (DisplayDate, - 1);
				date = GetGlobalCalendar ().AddDays (date, -date.Day + 1);
				cellNextPrev.RenderBeginTag (writer);
				writer.Write (BuildLink ("V" + GetDaysFromZenith (date), GetNextPrevFormatText (date, false), cellNextPrev.ForeColor, Enabled));
				cellNextPrev.RenderEndTag (writer);
			}

			// Current Month Table Data
			{
				DateTimeFormatInfo dti = DateInfo;
				string str;
				TableCell cellMonth = new TableCell ();
				cellMonth.Width = Unit.Percentage (70);
				cellMonth.HorizontalAlign = HorizontalAlign.Center;

				cellMonth.RenderBeginTag (writer);

				if (TitleFormat == TitleFormat.MonthYear)
					str = DisplayDate.ToString (dti.YearMonthPattern, dti);
				else
					str = dti.GetMonthName (GetGlobalCalendar ().GetMonth (DisplayDate));

				writer.Write (str);
				cellMonth.RenderEndTag (writer);
			}

			if (ShowNextPrevMonth) { // Next Table Data
				DateTime date = GetGlobalCalendar().AddMonths (DisplayDate, + 1);
				date = GetGlobalCalendar ().AddDays (date, -date.Day + 1);

				cellNextPrev.HorizontalAlign = HorizontalAlign.Right;
				cellNextPrev.RenderBeginTag (writer);
				writer.Write (BuildLink ("V" + GetDaysFromZenith (date), GetNextPrevFormatText (date, true), cellNextPrev.ForeColor, Enabled));
				cellNextPrev.RenderEndTag (writer);
			}

			writer.RenderEndTag ();
			tableTitle.RenderEndTag (writer);
			titleCell.RenderEndTag (writer);
			writer.RenderEndTag (); //tr

		}

		//
		// Private methods
		//
		void WriteDayHeader (HtmlTextWriter writer)
		{
			int i, first;
			string dayName;
			i = first = (int) (DisplayFirstDayOfWeek);
			TableCell cell;


			writer.RenderBeginTag (HtmlTextWriterTag.Tr);

			if (SelectionMode == CalendarSelectionMode.DayWeek) {
				cell = new TableCell();
				cell.HorizontalAlign = HorizontalAlign.Center;
				cell.ApplyStyle (DayHeaderStyle);

				// Empty Cell
				cell.RenderBeginTag (writer);
				cell.RenderEndTag (writer);
			} else {
				if (SelectionMode == CalendarSelectionMode.DayWeekMonth) {
					TableCell selector = new TableCell ();
					selector.ApplyStyle (SelectorStyle);
					selector.HorizontalAlign = HorizontalAlign.Center;

					DateTime date = new DateTime (DisplayDate.Year, DisplayDate.Month, 1); // first date
					int days =  DateTime.DaysInMonth (DisplayDate.Year, DisplayDate.Month);

					selector.RenderBeginTag (writer);
					writer.Write (BuildLink ("R" + GetDaysFromZenith (date) + days, SelectMonthText, DayHeaderStyle.ForeColor, Enabled));
					selector.RenderEndTag (writer);
				}
			}

			DateTimeFormatInfo dti = DateInfo;
			while (true) {
				DayOfWeek dayOfWeek = (DayOfWeek) i;
				dayName = dti.GetDayName (dayOfWeek);

#if NET_2_0
				if (UseAccessibleHeader) {
					writer.AddAttribute (HtmlTextWriterAttribute.Abbr, dayName);
					writer.AddAttribute (HtmlTextWriterAttribute.Scope, "col", false);
					cell = new TableHeaderCell();
				}
				else
#endif
					cell = new TableCell();

				cell.HorizontalAlign = HorizontalAlign.Center;
				cell.ApplyStyle (DayHeaderStyle);

				cell.RenderBeginTag (writer);

				switch (DayNameFormat) {
				case DayNameFormat.FirstLetter:
					dayName = dayName.Substring (0, 1);
					break;
				case DayNameFormat.FirstTwoLetters:
					dayName = dayName.Substring (0, 2);
					break;
#if NET_2_0
				case DayNameFormat.Shortest:
					dayName = dti.GetShortestDayName (dayOfWeek);
					break;
#endif
				case DayNameFormat.Full:
					break;
				case DayNameFormat.Short:
				default:
					dayName = dti.GetAbbreviatedDayName (dayOfWeek);
					break;
				}

				writer.Write (dayName);
				cell.RenderEndTag (writer);

				if (i >= daysInAWeek - 1) {
					i = 0;
				}
				else {
					i++;
				}
				if (i == first)
					break;
			}

			writer.RenderEndTag ();
		}

        private void RenderTitle(HtmlTextWriter writer, DateTime visibleDate, CalendarSelectionMode selectionMode, bool buttonsActive, bool useAccessibleHeader)
        {
            string str4;
            writer.Write("<tr>");
            TableCell titleCell = new TableCell();
            Table titleTable = new Table();
            titleCell.ColumnSpan = this.HasWeekSelectors(selectionMode) ? 8 : 7;
            titleCell.BackColor = Color.Silver;
            titleTable.GridLines = GridLines.None;
            titleTable.Width = Unit.Percentage(100.0);
            titleTable.CellSpacing = 0;
            TableItemStyle titleStyle = this.TitleStyle;
            this.ApplyTitleStyle(titleCell, titleTable, titleStyle);
            titleCell.RenderBeginTag(writer);
            titleTable.RenderBeginTag(writer);
            writer.Write("<tr>");
            System.Web.UI.WebControls.NextPrevFormat nextPrevFormat = this.NextPrevFormat;
            TableItemStyle style = new TableItemStyle {
                Width = Unit.Percentage(15.0)
            };
            style.CopyFrom(this.NextPrevStyle);
            if (this.ShowNextPrevMonth)
            {
                if (this.IsMinSupportedYearMonth(visibleDate))
                {
                    writer.RenderBeginTag(HtmlTextWriterTag.Td);
                    writer.RenderEndTag();
                }
                else
                {
                    string monthName;
                    DateTime minSupportedDate;
                    switch (nextPrevFormat)
                    {
                        case System.Web.UI.WebControls.NextPrevFormat.ShortMonth:
                        case System.Web.UI.WebControls.NextPrevFormat.FullMonth:
                        {
                            int month = this.threadCalendar.GetMonth(this.threadCalendar.AddMonths(visibleDate, -1));
                            monthName = this.GetMonthName(month, nextPrevFormat == System.Web.UI.WebControls.NextPrevFormat.FullMonth);
                            break;
                        }
                        default:
                            monthName = this.PrevMonthText;
                            break;
                    }
                    DateTime time2 = this.threadCalendar.AddMonths(this.minSupportedDate, 1);
                    if (this.IsTheSameYearMonth(time2, visibleDate))
                    {
                        minSupportedDate = this.minSupportedDate;
                    }
                    else
                    {
                        minSupportedDate = this.threadCalendar.AddMonths(visibleDate, -1);
                    }
                    string eventArgument = "V" + minSupportedDate.Subtract(baseDate).Days.ToString(CultureInfo.InvariantCulture);
                    string title = null;
                    if (useAccessibleHeader)
                    {
                        title = System.Web.SR.GetString("Calendar_PreviousMonthTitle");
                    }
                    this.RenderCalendarCell(writer, style, monthName, title, buttonsActive, eventArgument);
                }
            }
            TableItemStyle style3 = new TableItemStyle();
            if (titleStyle.HorizontalAlign != HorizontalAlign.NotSet)
            {
                style3.HorizontalAlign = titleStyle.HorizontalAlign;
            }
            else
            {
                style3.HorizontalAlign = HorizontalAlign.Center;
            }
            style3.Wrap = titleStyle.Wrap;
            style3.Width = Unit.Percentage(70.0);
            switch (this.TitleFormat)
            {
                case System.Web.UI.WebControls.TitleFormat.Month:
                    str4 = visibleDate.ToString("MMMM", CultureInfo.CurrentCulture);
                    break;

                default:
                {
                    string yearMonthPattern = DateTimeFormatInfo.CurrentInfo.YearMonthPattern;
                    if (yearMonthPattern.IndexOf(',') >= 0)
                    {
                        yearMonthPattern = "MMMM yyyy";
                    }
                    str4 = visibleDate.ToString(yearMonthPattern, CultureInfo.CurrentCulture);
                    break;
                }
            }
            this.RenderCalendarCell(writer, style3, str4, null, false, null);
            if (this.ShowNextPrevMonth)
            {
                if (this.IsMaxSupportedYearMonth(visibleDate))
                {
                    writer.RenderBeginTag(HtmlTextWriterTag.Td);
                    writer.RenderEndTag();
                }
                else
//.........这里部分代码省略.........

        public string GetCallbackResult()
        {
            //return string.Empty;
            ThemeHelper theme = new ThemeHelper(Theme);
            if (!Enabled)
            {
                return string.Empty;
            }

            mv.Width = DateBoxWidth;
            mv.BorderStyle = BorderStyle.None;
            mv.ShowTitle = false;
            mv.DayRender += MonthViewDayRender;

            mv.Font.Name = "Tahoma";
            mv.DayStyle.MergeWith(theme.DayStyle);
            mv.DayHeaderStyle.MergeWith(theme.DayStyle);
            mv.SelectedDayStyle.MergeWith(theme.SelectedDayStyle);
            mv.TodayDayStyle.MergeWith(theme.TodayDayStyle);

            //next & prev formats

            DropDownList list = theme.CreateFooterDropDownList();
            //list.MergeStyle(monthYearDropDownStyle);

            StringBuilder sb = new StringBuilder();
            StringWriter writer = new StringWriter(sb);
            HtmlTextWriter tw = new HtmlTextWriter(writer);

            if (this.EnableDropShadow)
            {
                tw.AddStyleAttribute(HtmlTextWriterStyle.Display, "#EFEFEF");
            }
            tw.AddAttribute(HtmlTextWriterAttribute.Id, "FADatePickerDropShadow_" + this.ClientID);
            tw.AddStyleAttribute(HtmlTextWriterStyle.ZIndex, (this.ZIndex + 1).ToString());
            tw.AddStyleAttribute(HtmlTextWriterStyle.Left, this.CalendarOffsetX.ToString());
            tw.AddStyleAttribute(HtmlTextWriterStyle.Top, this.CalendarOffsetY.ToString());
            tw.AddStyleAttribute(HtmlTextWriterStyle.Position, "absolute");
            tw.AddStyleAttribute(HtmlTextWriterStyle.Display, "inline");
            tw.AddStyleAttribute("min-width", this.mv.Width.ToString());
            tw.AddAttribute("CellPadding", "0");
            tw.AddAttribute("CellSpacing", "0");
            tw.RenderBeginTag(HtmlTextWriterTag.Table);
            tw.RenderBeginTag(HtmlTextWriterTag.Tr);
            tw.RenderBeginTag(HtmlTextWriterTag.Td);
            tw.AddStyleAttribute(HtmlTextWriterStyle.BackgroundColor, "white");
            tw.AddStyleAttribute(HtmlTextWriterStyle.BorderColor, "gray");
            tw.AddStyleAttribute(HtmlTextWriterStyle.BorderStyle, "solid");
            tw.AddStyleAttribute(HtmlTextWriterStyle.BorderWidth, "1px");
            tw.AddStyleAttribute(HtmlTextWriterStyle.Left, "-4px");
            tw.AddStyleAttribute(HtmlTextWriterStyle.Top, "-4px");
            tw.AddStyleAttribute(HtmlTextWriterStyle.Width, this.mv.Width.ToString());
            tw.AddAttribute(HtmlTextWriterAttribute.Id, "FADatePickerCalendarContainer_" + this.ClientID);
            tw.AddAttribute("CellPadding", "0");
            tw.AddAttribute("CellSpacing", "0");
            tw.RenderBeginTag(HtmlTextWriterTag.Table);
            tw.RenderBeginTag(HtmlTextWriterTag.Tr);
            tw.RenderBeginTag(HtmlTextWriterTag.Td);

            Table table = theme.CreateTitleTable(this.Page);
            table.Width = Unit.Percentage(100.0);
            table.MergeStyle(this.MonthViewTitleStyle);
            table.ID = "FADatePickerCalendarTitle_" + this.ClientID;
            table.RenderBeginTag(tw);
            tw.RenderBeginTag(HtmlTextWriterTag.Tr);
            TableCell cell = new TableCell();
            cell.Style.Add(HtmlTextWriterStyle.TextAlign, "left");
            cell.MergeStyle(this.MonthViewNextPrevStyle);
            cell.RenderBeginTag(tw);

            if ((this.mv.VisibleDate.Month > this.MinDate.Month) || (this.mv.VisibleDate.Year > this.MinDate.Year))
            {
                try
                {
                    DateTime dt = this.mv.VisibleDate.AddMonths(-1);
                    dt = dt.AddDays((double)-(dt.Day - 1));
                    if (this.NextPrevFormat == NextPrevFormat.ShortMonth)
                    {
                        tw.WriteLine("<div style='cursor:pointer;' onclick=\"javascript:CallServer_" + this.ClientID + "('" + dt.ToShortDateString() + "')\">" + dt.ToString("MMM") + "</div>");
                    }
                    else if (this.NextPrevFormat == NextPrevFormat.FullMonth)
                    {
                        tw.WriteLine("<div style='cursor:pointer;' onclick=\"javascript:CallServer_" + this.ClientID + "('" + dt.ToShortDateString() + "')\">" + dt.ToString("MMMM") + "</div>");
                    }
                    else
                    {
                        tw.WriteLine("<div style='cursor:pointer;' onclick=\"javascript:CallServer_" + this.ClientID + "('" + dt.ToShortDateString() + "')\">" + this.PrevMonthText + "</div>");
                    }
                }
                catch
                {
                }
            }

            cell.RenderEndTag(tw);
            tw.AddStyleAttribute(HtmlTextWriterStyle.TextAlign, "center");
            tw.RenderBeginTag(HtmlTextWriterTag.Td);
            tw.WriteLine(this.mv.VisibleDate.ToString("MMMM yyyy"));
            tw.RenderEndTag();
            TableCell cell2 = new TableCell();
//.........这里部分代码省略.........

		/// <summary>
		/// 
		/// </summary>
		/// <param name="writer"></param>
		/// <author>
		/// Created by Iulian Iuga; 30 December, 2002
		/// </author>		
		protected void RenderContents( HtmlTextWriter writer )
		{
			TableRow _tr = new TableRow();
			TableCell _td = new TableCell();

			_tr.RenderBeginTag( writer );
			
			// apply CssClass for current element
			if( _element.TreeWeb.DefaultElementCssClass.Length > 0 )
				_td.CssClass = _element.TreeWeb.DefaultElementCssClass;
			if( _element.CssClass.Length > 0 )
				_td.CssClass = _element.CssClass;

			//_td.Style.Add( "display", "none" );
			_td.Attributes.Add( "nowrap", "yes" );
			_td.RenderBeginTag( writer );

			// render a &nbsp; at the begining of each element
			writer.Write( "&nbsp;" );

			// render element indentation based on element level
			string _indentation = "";
      int nIndentationPerStep = _element.TreeWeb.Indentation;
			for( int index = 0; index < (_element.Level * nIndentationPerStep); index++ )
				_indentation += _indentationStep;
			writer.Write( _indentation );

			// render the expand/collapse link if the element has child elements and is expandable.
			if( _element.HasElements )
			{
				HyperLink _link = new HyperLink();
				Image _image = new Image();

        if( _element.TreeWeb.Expandable && _element.Expandable )
        {
          if( _element.IsExpanded )
          {
            _link.Text = _expcol[1];
            if( _element.TreeWeb.ExpandedElementImage.Length > 0 )
              _image.ImageUrl = _element.TreeWeb.ExpandedElementImage;
          }
          else
          {
            _link.Text = _expcol[0];
            if( _element.TreeWeb.CollapsedElementImage.Length > 0 )
              _image.ImageUrl = _element.TreeWeb.CollapsedElementImage;
          }
        }

				string scriptCode = "javascript:";
				scriptCode += _element.TreeWeb.Page.GetPostBackEventReference( _element.TreeWeb, _element.ID );
				_link.NavigateUrl = scriptCode;

				if( _image.ImageUrl.Length > 0 )
				{
					_link.RenderBeginTag( writer );
					_image.RenderControl( writer );
					_link.RenderEndTag( writer );
				}
				else
					_link.RenderControl( writer );

				_image = null;
				_link = null;
				writer.Write( "&nbsp;" );
			}

			// render checkbox
			if( _element.TreeWeb.CheckBoxes || _element.CheckBox )
			{
				CheckBox _checkbox = new CheckBox();
				
				_checkbox.ID = _element.ID + TreeElement._separator + TreeElement._checkboxIDSufix;
				_checkbox.RenderControl( writer );

				_checkbox = null;
				
				// write a non-breaking space before the element text
				writer.Write( "&nbsp;" );
			}

			// render element's image if it has one
			if( _element.ImageIndex > -1 )
			{
				ElementImage _elementImage = _element.TreeWeb.ImageList[_element.ImageIndex];
				if( _elementImage != null )
				{
					Image _image = new Image();

					_image.ImageUrl = _elementImage.ImageUrl;
					_image.RenderControl( writer );

					_image = null;
//.........这里部分代码省略.........

		private void RenderCalendarCell (HtmlTextWriter writer, TableCell cell, string text)
		{
			cell.RenderBeginTag(writer);
			writer.Write(text);
			cell.RenderEndTag(writer);
		}

		private void RenderTitle (HtmlTextWriter writer,
					  DateTime visibleDate,
					  CalendarSelectionMode mode,
					  bool isActive)
		{
			writer.Write("<tr>");
			Table innerTable = new Table ();
			TableCell titleCell = new TableCell();
			bool isWeekMode = (mode == CalendarSelectionMode.DayWeek ||
					   mode == CalendarSelectionMode.DayWeekMonth);

			titleCell.ColumnSpan = (isWeekMode ? 8 : 7);
			titleCell.BackColor = Color.Silver;

			innerTable.GridLines = GridLines.None;
			innerTable.Width = Unit.Percentage (100);
			innerTable.CellSpacing = 0;
			ApplyTitleStyle (innerTable, titleCell, TitleStyle);

			titleCell.RenderBeginTag (writer);
			innerTable.RenderBeginTag (writer);

			writer.Write ("<tr>");
			string prevContent = String.Empty;
			if (ShowNextPrevMonth) {
				TableCell prevCell = new TableCell ();
				prevCell.Width = Unit.Percentage (15);
				prevCell.HorizontalAlign = HorizontalAlign.Left;
				if (NextPrevFormat == NextPrevFormat.CustomText) {
					prevContent = PrevMonthText;
				} else {
					int pMthInt = globCal.GetMonth(globCal.AddMonths (visibleDate, -1));
					if (NextPrevFormat == NextPrevFormat.FullMonth)
						prevContent = infoCal.GetMonthName (pMthInt);
					else
						prevContent = infoCal.GetAbbreviatedMonthName (pMthInt);
				}
				DateTime prev_month = visibleDate.AddMonths (-1);
				int prev_offset = (int) (new DateTime (prev_month.Year,
									  prev_month.Month, 1) - begin_date).TotalDays;
				prevCell.ApplyStyle (NextPrevStyle);
				RenderCalendarCell (writer,
						    prevCell,
						    GetCalendarLinkText ("V" + prev_offset,
							    		 prevContent,
										 "Go to previous month",
									 NextPrevStyle.ForeColor,
									 isActive)
						    );
			}

			TableCell currCell = new TableCell ();
			currCell.Width = Unit.Percentage (70);
			if (TitleStyle.HorizontalAlign == HorizontalAlign.NotSet)
				currCell.HorizontalAlign = HorizontalAlign.Center;
			else
				currCell.HorizontalAlign = TitleStyle.HorizontalAlign;

			currCell.Wrap = TitleStyle.Wrap;
			string currMonthContent = String.Empty;
			if (TitleFormat == TitleFormat.Month) {
				currMonthContent = visibleDate.ToString ("MMMM");
			} else {
				string cmcFmt = infoCal.YearMonthPattern;
				if (cmcFmt.IndexOf (',') >= 0)
					cmcFmt = "MMMM yyyy";

				currMonthContent = visibleDate.ToString (cmcFmt);
			}

			RenderCalendarCell (writer, currCell, currMonthContent);
								 
			string nextContent = String.Empty;
			if (ShowNextPrevMonth) {
				TableCell nextCell = new TableCell ();
				nextCell.Width = Unit.Percentage(15);
				nextCell.HorizontalAlign = HorizontalAlign.Right;
				if (NextPrevFormat == NextPrevFormat.CustomText) {
					nextContent = NextMonthText;
				} else {
					int nMthInt = globCal.GetMonth (globCal.AddMonths (visibleDate, 1));
					if(NextPrevFormat == NextPrevFormat.FullMonth)
						nextContent = infoCal.GetMonthName(nMthInt);
					else
						nextContent = infoCal.GetAbbreviatedMonthName(nMthInt);
				}
				DateTime next_month = visibleDate.AddMonths (1);
				int next_offset = (int) (new DateTime (next_month.Year,
									  next_month.Month, 1) - begin_date).TotalDays;
				nextCell.ApplyStyle(NextPrevStyle);
				RenderCalendarCell (writer,
						    nextCell,
						    GetCalendarLinkText ("V" + next_offset,
									 nextContent,
									 "Go to next month",
									 NextPrevStyle.ForeColor,
									 isActive)
						    );
			}

//.........这里部分代码省略.........

        /// <summary>
        /// Renders a table cell of a given toolbar item.
        /// </summary>
        /// <param name="item">Item to be rendered.</param>
        /// <param name="writer">Writer that streams output to the client.</param>
        protected void RenderItemCell(ToolbarItem item, HtmlTextWriter writer)
        {
            TableCell cell = new TableCell();
            cell.HorizontalAlign = item.HorizontalAlign;
            cell.VerticalAlign = item.VerticalAlign;

            if (item is ToolbarSeparator)
            {
                //set separator height (custom if set or toolbar property)
                if (this.Orientation == ToolbarOrientation.Horizontal)
                    //set the cell width on a horizontal toolbar
                    cell.Width = item.ItemCellDistance == Unit.Empty ? this.SeparatorCellDistance : item.ItemCellDistance;
                else
                    //set the cell height on a vertical toolbar
                    cell.Height = item.ItemCellDistance == Unit.Empty ? this.SeparatorCellDistance : item.ItemCellDistance;

                if (this.SeparatorImageUrl != String.Empty)
                {
                    Image img = new Image();
                    img.ImageUrl = this.SeparatorImageUrl;
                    cell.Controls.Add(img);
                }
                else
                {
                    cell.Text = "&nbsp;";
                }
                cell.RenderControl(writer);
            }
            else
            {
                if (this.Orientation == ToolbarOrientation.Horizontal)
                    //set the cell width on a horizontal toolbar
                    cell.Width = item.ItemCellDistance == Unit.Empty ? this.ItemCellDistance : item.ItemCellDistance;
                else
                    //set the cell height on a vertical toolbar
                    cell.Height = item.ItemCellDistance == Unit.Empty ? this.ItemCellDistance : item.ItemCellDistance;

                //render the item
                cell.RenderBeginTag(writer);
                item.RenderControl(writer);
                cell.RenderEndTag(writer);
            }
        }

        /// <devdoc>
        /// </devdoc>
        private void RenderTitle(HtmlTextWriter writer, DateTime visibleDate, CalendarSelectionMode selectionMode, bool buttonsActive, bool useAccessibleHeader) {
            writer.Write(ROWBEGINTAG);

            TableCell titleCell = new TableCell();
            Table titleTable = new Table();

            // default title table/cell styles
            titleCell.ColumnSpan = HasWeekSelectors(selectionMode) ? 8 : 7;
            titleCell.BackColor = Color.Silver;
            titleTable.GridLines = GridLines.None;
            titleTable.Width = Unit.Percentage(100);
            titleTable.CellSpacing = 0;

            TableItemStyle titleStyle = TitleStyle;
            ApplyTitleStyle(titleCell, titleTable, titleStyle);

            titleCell.RenderBeginTag(writer);
            titleTable.RenderBeginTag(writer);
            writer.Write(ROWBEGINTAG);

            NextPrevFormat nextPrevFormat = NextPrevFormat;

            TableItemStyle nextPrevStyle = new TableItemStyle();
            nextPrevStyle.Width = Unit.Percentage(15);
            nextPrevStyle.CopyFrom(NextPrevStyle);
            if (ShowNextPrevMonth) {
                if (IsMinSupportedYearMonth(visibleDate)) {
                    writer.RenderBeginTag(HtmlTextWriterTag.Td);
                    writer.RenderEndTag();
                }
                else {
                    string prevMonthText;
                    if (nextPrevFormat == NextPrevFormat.ShortMonth || nextPrevFormat == NextPrevFormat.FullMonth) {
                        int monthNo = threadCalendar.GetMonth(threadCalendar.AddMonths(visibleDate, - 1));
                        prevMonthText = GetMonthName(monthNo, (nextPrevFormat == NextPrevFormat.FullMonth));
                    }
                    else {
                        prevMonthText = PrevMonthText;
                    }
                    // Month navigation. The command starts with a "V" and the remainder is day difference from the
                    // base date.
                    DateTime prevMonthDate;

                    // VSWhidbey 366243: Some calendar's min supported date is
                    // not the first day of the month (e.g. JapaneseCalendar.
                    // So if we are setting the second supported month, the prev
                    // month link should always point to the first supported
                    // date instead of the first day of the previous month.
                    DateTime secondSupportedMonth = threadCalendar.AddMonths(minSupportedDate, 1);
                    if (IsTheSameYearMonth(secondSupportedMonth, visibleDate)) {
                        prevMonthDate = minSupportedDate;
                    }
                    else {
                        prevMonthDate = threadCalendar.AddMonths(visibleDate, -1);
                    }

                    string prevMonthKey = NAVIGATE_MONTH_COMMAND + (prevMonthDate.Subtract(baseDate)).Days.ToString(CultureInfo.InvariantCulture);

                    string previousMonthTitle = null;
                    if (useAccessibleHeader) {
                        previousMonthTitle = SR.GetString(SR.Calendar_PreviousMonthTitle);
                    }
                    RenderCalendarCell(writer, nextPrevStyle, prevMonthText, previousMonthTitle, buttonsActive, prevMonthKey);
                }
            }


            TableItemStyle cellMainStyle = new TableItemStyle();

            if (titleStyle.HorizontalAlign != HorizontalAlign.NotSet) {
                cellMainStyle.HorizontalAlign = titleStyle.HorizontalAlign;
            }
            else {
                cellMainStyle.HorizontalAlign = HorizontalAlign.Center;
            }
            cellMainStyle.Wrap = titleStyle.Wrap;
            cellMainStyle.Width = Unit.Percentage(70);

            string titleText;

            switch (TitleFormat) {
                case TitleFormat.Month:
                    titleText = visibleDate.ToString("MMMM", CultureInfo.CurrentCulture);
                    break;
                case TitleFormat.MonthYear:
                    string titlePattern = DateTimeFormatInfo.CurrentInfo.YearMonthPattern;
                    // Some cultures have a comma in their YearMonthPattern, which does not look
                    // right in a calendar. Use a fixed pattern for those.
                    if (titlePattern.IndexOf(',') >= 0) {
                        titlePattern = "MMMM yyyy";
                    }
                    titleText = visibleDate.ToString(titlePattern, CultureInfo.CurrentCulture);
                    break;
                default:
                    Debug.Assert(false, "Unknown TitleFormat value!");
                    goto case TitleFormat.MonthYear;
            }
            RenderCalendarCell(writer, cellMainStyle, titleText, null, false, null);
//.........这里部分代码省略.........