C#实现DataList里面嵌套DataList的折叠菜单

2019-10-29 21:36:07

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这篇文章主要介绍了C#实现DataList里面嵌套DataList的折叠菜单,以实例形式详细分析了DataList嵌套实现折叠菜单所涉及的JavaScript、HTML与C#相关使用技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了C#实现DataList里面嵌套DataList的折叠菜单。分享给大家供大家参考，具体如下：

点击前效果图如下：

点击后效果图如下：

具体实现代码如下：

Javascript脚本

<script type="text/javascript">

function showmenu(id)

{

smallimg = eval("smallimg"+id);

img =eval("img"+id);

if(smallimg.style.display =="none")

{

eval("smallimg"+id+".style.display=/"/";");//全部显示

img.src="Image/tree_folder3.gif";//显示为-

}

else

{

eval("smallimg"+id+".style.display=/"none/";"); //全部隐藏

img.src="Image/tree_folder4.gif";//显示为+

}

}

</script>

HTML代码如下：

<body>

<form id="Form1" method="post" runat="server">

<font face="宋体"></font>

<table width="679" height="100%" border="0" cellpadding="0" cellspacing="0" align="center">

<tr>

<td align="center" valign="top">

<strong>版块设置</strong>

<br />

<br />

管理选项：<asp:Button ID="btnAdd" runat="server"

OnClick="btnAdd_Click" Text="添加一级版块"/><br />

<br />

<asp:DataList ID="DataList1" runat="server" CellSpacing="0" CellPadding="0" Width="679"

OnItemDataBound="DataList1_ItemDataBound">

<HeaderTemplate>

<table width="679" border="0" cellpadding="0" cellspacing="0" bgcolor="#000000" class="border">

<tr bgcolor="#a4b6d7" class="title">

<td height="25" align="center">

<strong>版块名称</strong></td>

<td height="20" align="center">

<strong>操作选项</strong></td>

</tr>

</HeaderTemplate>

<ItemTemplate>

<tr bgcolor="ECF5FF" class="tdbg">

<td height="22" width="50%">

<img id="img<%#Eval("BigClassID")%>" src="Image/tree_folder4.gif" width="15" height="15" onclick="showmenu(<%#Eval("BigClassID")%>)"><%#Eval("BigClassName")%></td>

<td align="center" width="50%">

<a href='SmallClassAdd.aspx?BigClassID=<%#Eval("BigClassID")%>'>

添加二级版块</a> | <a href='BigClassModify.aspx?BigClassID=<%#Eval("BigClassID")%>'>

修改一级版块</a> | <a href='BigClassDelete.aspx?BigClassID=<%#Eval("BigClassID")%>'

onclick="return confirm('确定删除吗,下级版块及相关帖子都将被删除,且不可恢复!!!')">删除一级版块</a></td>

</tr>

<tr bgcolor="ECF5FF" class="tdbg" width="100%">

<td colspan="2" width="100%">

<asp:DataList ID='dlstSmallClass' EnableViewState='false' runat='server'>

<HeaderTemplate>

<table width="679" border="0" cellpadding="0" cellspacing="0" bgcolor="#000000" class="border">

</HeaderTemplate>

<ItemTemplate>

<tr id="smallimg<%#Eval("BigClassID")%>" style="display:none" bgcolor="#E3E3E3" class="tdbg">

<td height="22" width="50%" colspan="3">

<img src="Image/tree_folder3.gif" width="15" height="15"><%#Eval("SmallClassName")%></td>

<td align="center" width="50%" colspan="3">

<a href='SmallClassModify.aspx?SmallClassID=<%#Eval("SmallClassID")%>'>

修改二级版块</a> | <a href='SmallClassDelete.aspx?SmallClassID=<%#Eval("SmallClassID")%>'

onclick="return confirm('确定删除吗,相关帖子都将被删除,且不可恢复!!!')">删除二级版块</a></td>

</tr>

</ItemTemplate>

<FooterTemplate>

</table>

</FooterTemplate>

</asp:DataList>

</td>

</tr>

</ItemTemplate>

<FooterTemplate>

</table>

</FooterTemplate>

</asp:DataList>

</td>

</tr>

</table>

</form>

</body>

上面的功能有点缺陷(ques1:多行时候不能折叠，默认只折叠第一行;ques2:不支持IE)，现在改善如下：

<script type="text/javascript">

function showmenu(id)

{

var smallimg = document.getElementById("smallimg"+id);

var img = document.getElementById("img"+id);

if(smallimg.style.display =="none")

{

smallimg.style.display="";

img.src="Image/tree_folder3.gif";//显示为-

}

else

{

smallimg.style.display ="none";

img.src="Image/tree_folder4.gif";//显示为+

}

}

</script>

<body>

<form id="Form1" method="post" runat="server">

<font face="宋体"></font>

<table width="679" height="100%" border="0" cellpadding="0" cellspacing="0" align="center">

<tr>

<td align="center" valign="top">

<strong>版块设置</strong>

<br />

<br />

管理选项：<asp:Button ID="btnAdd" runat="server" OnClick="btnAdd_Click" Text="添加一级版块"/><br />

<br />

<asp:DataList ID="DataList1" runat="server" CellSpacing="0" CellPadding="0" Width="679"

OnItemDataBound="DataList1_ItemDataBound">

<HeaderTemplate>

<table width="679" border="0" cellpadding="0" cellspacing="0" bgcolor="#000000"class="border">

<tr bgcolor="#a4b6d7"class="title">

<td height="25" align="center">

<strong>版块名称</strong>

</td>

<td height="20" align="center">

<strong>操作选项</strong>

</td>

</tr>

</HeaderTemplate>

<ItemTemplate>

<tr bgcolor="ECF5FF"class="tdbg">

<td height="22" width="50%">

<img id="img<%#Eval("BigClassID")%>" src="Image/tree_folder4.gif" width="15" height="15"

onclick="showmenu(<%#Eval("BigClassID")%>)"><%#Eval("BigC <td align="center" width="50%" colspan="3">

<a href='SmallClassModify.aspx?SmallClassID=<%#Eval("SmallClassID")%>'>

修改二级版块</a>|<a href='SmallClassDelete.aspx?SmallClassID=<%#Eval("SmallClassID")%>'

onclick="return confirm('确定删除吗,相关帖子都将被删除,且不可恢复!!!')">删除二级版块</a>

</td>

</tr>

</ItemTemplate>

<FooterTemplate>

</table>

</FooterTemplate>

</asp:DataList>

</td>

</tr>

</ItemTemplate>

<FooterTemplate>

</table>

</FooterTemplate>

</asp:DataList>

</td>

</tr>

</table>

</form>

</body>