我可以将子菜单添加到包含listitem的下拉列表中 [英] Can I add submenu to dropdownlist having listitem

问题描述

大家好我试图通过使用列表或选项使用子菜单下拉列表但是它不允许使用列表或选项可以任何一个帮助，因为我想在支持选项中添加子菜单


$ b

< asp：DropDownList ID =ddlPhase CssClass =selectbox1runat =server> 
< asp：ListItem Value = -  1> -SELECT-< / asp：ListItem> 
< asp：ListItem Text =AnalysisValue =Analysis>< / asp：ListItem> 
< asp：ListItem Text =PlanningValue =Planning>< / asp：ListItem> 
< asp：ListItem Text =ExecutionValue =Execution>< / asp：ListItem> 
< asp：ListItem Text =ControlValue =Control>< / asp：ListItem> 
< asp：ListItem Text =SupportValue =Support>< / asp：ListItem> 
< / asp：DropDownList> 

我尝试过：

< asp：DropDownList ID =ddlPhaseCssClass =selectbox1runat =server> 
< asp：ListItem Value = -  1> -SELECT-< / asp：ListItem> 
< asp：ListItem Text =AnalysisValue =Analysis>< / asp：ListItem> 
< asp：ListItem Text =PlanningValue =Planning>< / asp：ListItem> 
< asp：ListItem Text =ExecutionValue =Execution>< / asp：ListItem> 
< asp：ListItem Text =ControlValue =Control>< / asp：ListItem> 
< asp：ListItem Text =SupportValue =Support> 
< li> ****< / Li>< / asp：ListItem> 
< / asp：DropDownList> 

我试过谷歌也请任何人帮忙

解决方案

尝试这样的事情

< asp：DropDownList ID =ddlPhaserunat =server > 
< asp：listitem value = -  1> -SELECT-< / asp：listitem> 
< asp：listitem text =Analysisvalue =Analysis>< / asp：listitem> 
< asp：listitem text =Planningvalue =Planning>< / asp：listitem> 
< asp：listitem text =执行值=执行>< / asp：listitem> 
< asp：listitem text =Controlvalue =Control>< / asp：listitem> 
< asp：listitem style =font-weight：boldtext =Supportvalue =Support>< / asp：listitem> 
< asp：listitem text =   支持1value =Support1>< / asp：listitem> 
< asp：listitem text =   支持2value =Support2>< / asp：listitem> 
< asp：listitem style =font-weight：boldtext =其他值=其他>< / asp：listitem> 
< asp：listitem text =    Other 1value =Other1>< / asp：listitem> 
< asp：listitem text =    Other 2value =Other2>< / asp：listitem> 
< / asp：DropDownList> 
 

或查看 HTML optgroup标签 [ ^ ]



使用& nbsp; [ ^ ]了解空间

Hi Everyone i am trying to use submenu to dropdown list by using list or option but it doesn't allow to use list or option can any one help, As i want to add submenu in support option

<asp:DropDownList ID="ddlPhase" CssClass="selectbox1" runat="server">
                            <asp:ListItem Value="-1">-SELECT-</asp:ListItem>
                            <asp:ListItem Text="Analysis" Value="Analysis"></asp:ListItem>
                             <asp:ListItem Text="Planning" Value="Planning"></asp:ListItem>
                              <asp:ListItem Text="Execution" Value="Execution"></asp:ListItem>
                               <asp:ListItem Text="Control" Value="Control"></asp:ListItem>
                            <asp:ListItem Text="Support" Value="Support"></asp:ListItem>
                            </asp:DropDownList>

What I have tried:

<asp:DropDownList ID="ddlPhase" CssClass="selectbox1" runat="server">
                            <asp:ListItem Value="-1">-SELECT-</asp:ListItem>
                            <asp:ListItem Text="Analysis" Value="Analysis"></asp:ListItem>
                             <asp:ListItem Text="Planning" Value="Planning"></asp:ListItem>
                              <asp:ListItem Text="Execution" Value="Execution"></asp:ListItem>
                               <asp:ListItem Text="Control" Value="Control"></asp:ListItem>
                            <asp:ListItem Text="Support" Value="Support">
<li>****</Li></asp:ListItem>
                            </asp:DropDownList>

I tried google also please can anyone help

解决方案

try something like this

<asp:DropDownList ID="ddlPhase"  runat="server">
      <asp:listitem value="-1">-SELECT-</asp:listitem>
      <asp:listitem text="Analysis" value="Analysis"></asp:listitem>
      <asp:listitem text="Planning" value="Planning"></asp:listitem>
      <asp:listitem text="Execution" value="Execution"></asp:listitem>
      <asp:listitem text="Control" value="Control"></asp:listitem>
      <asp:listitem style="font-weight:bold" text="Support" value="Support"></asp:listitem>
      <asp:listitem text="   Support 1" value="Support1"></asp:listitem>
      <asp:listitem text="   Support 2" value="Support2"></asp:listitem>
      <asp:listitem  style="font-weight:bold" text="Other" value="Other"></asp:listitem>
      <asp:listitem text="   Other 1" value="Other1"></asp:listitem>
      <asp:listitem text="   Other 2" value="Other2"></asp:listitem>
  </asp:DropDownList>

or have a look on HTML optgroup tag[^]

use & nbsp;[^] for space

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