在C#中如何将含有javascript函数的字符串相加，并能够正常调用

Question

如下有一段html文本：
   <div id="Layer1" style="Z-INDEX:1; LEFT:111px; WIDTH:190px; POSITION:absolute; TOP:21px; HEIGHT:23px"><img src="image/111.ico" onmouseover="javascipt:showPopupMenu(this, popMenu, '<%=sMemo%>>')" onmouseout="hidePopupMenu(this, popMenu)" ></div>
我想在c#中以字符串形式体现，但总是不能在PlaceHolder中正常调用函数，请大家帮忙解决.
我的写法是：
   string showinfo="<div id='Layer1' style='Z-INDEX:1; LEFT:111px; WIDTH:190px; POSITION:absolute; TOP:21px; HEIGHT:23px'>"+"<img src='image/topsoft.ico' onmouseover="+"'showPopupMenu(this, popMenu,"+" '<%=sMemo%>>'"+")'"+" onmouseout='hidePopupMenu(this, popMenu)' ></div>"

Answer 1

string showinfo="<div id='Layer1' style='Z-INDEX:1; LEFT:111px; WIDTH:190px; POSITION:absolute; TOP:21px; HEIGHT:23px'>"+"<img src='image/topsoft.ico' onmouseover="+"'showPopupMenu(this, popMenu,\"" + sMemo + "\")'"+" onmouseout='hidePopupMenu(this, popMenu)' ></div>";

Answer 2

string showinfo="<div id='Layer1' style='Z-INDEX:1; LEFT:111px; WIDTH:190px; POSITION:absolute; TOP:21px; HEIGHT:23px'>"+"<img src='image/topsoft.ico' onmouseover="+"'showPopupMenu(this, popMenu,\"<%=sMemo%>\")'"+" onmouseout='hidePopupMenu(this, popMenu)' ></div>";