在设计页面无法显示控件?
控件是在div标签中,控件无法在设计页面显示,而运行时正常.代码如下:
<FORM   id= "Form1 "   method= "post "   runat= "server ">
                        <br   />
<br   />
<DIV   style= "BORDER-RIGHT:   thin   ridge;   PADDING-RIGHT:   20px;   BORDER-TOP:   thin   ridge;   PADDING-LEFT:   20px;   FONT-SIZE:   x-small;   PADDING-BOTTOM:   20px;   BORDER-LEFT:   thin   ridge;   WIDTH:   293px;   PADDING-TOP:   20px;   BORDER-BOTTOM:   thin   ridge;   FONT-FAMILY:   Verdana;   HEIGHT:   486px;   BACKGROUND-COLOR:   lightyellow "> Choose  
a   background   color: <BR>
<asp:dropdownlist   id= "lstBackColor "   runat= "server "   Height= "22px "   Width= "194px "> </asp:dropdownlist> <BR>
<BR>
Choose   a   font: <BR>
<asp:dropdownlist   id= "lstFontName "   runat= "server "   Height= "22px "   Width= "194px "> </asp:dropdownlist> <BR>
<BR>
Specify&nbsp;a   numeric   font   size: <BR>
<asp:textbox   id= "txtFontSize "   runat= "server "> </asp:textbox> <BR>
<BR>
Choose   a   border   style: <BR>
<asp:radiobuttonlist   id= "lstBorder "   runat= "server "   Height= "59px "   Width= "177px "   Font-Size= "X-Small "> </asp:radiobuttonlist> <BR>
<BR>
<asp:checkbox   id= "chkPicture "   runat= "server "   Text= "Add   the   Default   Picture "> </asp:checkbox> <BR>
<BR>
Enter   the   greeting   text   below: <BR>
<asp:textbox   id= "txtGreeting "   runat= "server "   Height= "85px "   Width= "240px "   TextMode= "MultiLine "> </asp:textbox> <BR>
<BR>
<asp:button   id= "cmdUpdate "   runat= "server "   Height= "24px "   Width= "71px "   Text= "Update "   onclick= "cmdUpdate_Click "> </asp:button> </DIV>
<asp:panel   id= "pnlCard "   style= "Z-INDEX:   101;   LEFT:   313px;   POSITION:   absolute;   TOP:   16px "   runat= "server "   Height= "507px "   Width= "339px "   HorizontalAlign= "Center "> <BR> &nbsp;  
<asp:Label   id= "lblGreeting "   runat= "server "   Height= "150px "   Width= "256px "> </asp:Label> <BR> <BR> <BR>
<asp:Image   id= "imgDefault "   runat= "server "   Height= "160px "   Width= "212px "   Visible= "False "> </asp:Image> </asp:panel>
                        &nbsp;
                        &nbsp; </FORM>

------解决方案--------------------
检查一下页面代码是否有误。控件属性是否合法