如果Listview中的语句不起作用. [英] If statement inside Listview is not working.

问题描述

大家好

我正在尝试在Listview中添加if语句.这是我的代码.

 <％  if (Eval( 正确")==  ){％> 
<   asp:LinkBut​​ton     ID   ="   runat   服务器" 文本  删除"  CommandName   删除" / > 
<％} ％>  

它显示此错误. 诸如Eval()，XPath()和Bind()之类的数据绑定方法只能在数据绑定控件的上下文中使用".请帮助我解决此问题.

预先表示感谢.

解决方案

Eval()仅可用于诸如中继器或datagrid之类的控件中以绑定数据.而是在服务器端使用属性，并在适当的地方设置其值，然后在aspx或ascx中使用它.

例如

 受保护的  int 正确；

//在适当的地方进行分配

正确=  0 ;

在ascx或aspx
中

<！[CDATA [<％if(正确==  0 ))
  {％> ]] > 
< asp:linkbutton id = "  runat =  "  text = "  commandname = "  xmlns:asp = " />

<！[CDATA [&％;
  } ％> ]] >  

Hi all

I am trying to add if statement inside Listview. This is my code.

<% if (Eval("Correct") == "0") { %>
<asp:LinkButton ID="btnZnackyDelete" runat="server" Text="delete" CommandName="Delete" />
<% } %>

It is showing This error. "Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control". Please help me to fix this Problem.

Thanks in advance.

解决方案

Eval() can only be used in controls such as repeater or datagrid to bind data. Rather use a property on server side and where appropriate sets its value and use it in your aspx or ascx.

e.g

protected int Correct;

// Assignment made where appropriate

Correct = 0;

in ascx or aspx

<![CDATA[<%if (Correct == 0)
  {%>]]>
<asp:linkbutton id="btnZnackyDelete" runat="server" text="delete" commandname="Delete" xmlns:asp="#unknown" />

<![CDATA[<%
  }%>]]>

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