全部,一般来说。如果我们想在 page 的代码隐藏类文件中定义的页面中输出一个变量。public
我们可以使用或protect
可见性设置变量。在首页我们可以像下面这样使用它。
<%=VariableName%>
.
但是不知道为什么不能在ListView中使用。请帮助检查我的代码。
在首页
<div id="divIssuedListContainer" class="myIssuedList">
<asp:ListView id="listShower" runat="server">
<LayoutTemplate>
<div id="divIssuedListHeadTitle">
<div id="divIssuedListTitleIco">
<img alt="" src="ico/IssuedCap.png" />
</div>
<div id="divIssuedListTitleName">
<span>ISSUED</span><span>TRADE NAMES</span><span>/LICENSES</span>
</div>
<div id="divIssuedListItemNumber">
<span>
<%=iListNumber%></span>
</div>
</div>
<div style="clear:both"></div>
<div id="divIssuedListBody">
<ul>
<asp:PlaceHolder runat="server" ID="itemPlaceholder"></asp:PlaceHolder>
</ul>
</div>
</LayoutTemplate>
<ItemTemplate>
<li>
<table>
<tr>
<td>
<img alt="" src="" />
</td>
<td>
<div>
<span>
<%# Eval("altID") %>
-
<%# Eval("englishTradeName") %></span></div>
<div>
<span>Expired Date:<%# Eval("expDate") %></span>
</div>
</td>
</tr>
</table>
</li>
</ItemTemplate>
</asp:ListView>
在页面的代码隐藏中
public partial class _Default : System.Web.UI.Page
{
protected int iListNumber = 0;
protected void Page_Load(object sender, EventArgs e)
{
List<SimpleCapModel> DataSourceList = TestDataHelper.GetMyIssuedList();
listShower.DataSource = DataSourceList;
iListNumber = DataSourceList.Count();
listShower.DataBind();
}
}
我得到一个错误页面说:
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
Source Error:
Line 19: listShower.DataSource = DataSourceList;
Line 20: iListNumber = DataSourceList.Count();
Line 21: listShower.DataBind();//this line cause error.
Line 22: }
Line 23: }
如果我使用表达式<%#iListNumber%>
. 错误消失了,但我得到了一个空值而不是列表的编号。请查看以下呈现的结果 html:
<div id="divIssuedListItemNumber">
<span> </span>
</div>
我不知道我是否错过了什么?如果我这样做了。请帮助让我知道。谢谢。