如何设置style将TextBox和DropDownList重合在一起

[taylermail]

我想做一个DropDownList下拉带可录入，如何设置style将TextBox和DropDownList重合在一起
<asp:TableRow Height="40" >
<asp:TableCell ID="TableCell11" cssClass="tb_edit_label">施工单位：</asp:TableCell>
<asp:TableCell ID="k6" style="position:absolute;width: 191px"><asp:TextBox runat="server" ID="construct_units" Columns="40" /></asp:TableCell>

<asp:TableCell ID="TableCell12" cssClass="tb_edit_text">
<asp:DropDownList ID="c_cpu" AutoPostBack="false" runat="server" DataSourceID="SqlDataSource1" DataTextField="dw" DataValueField="dw" style="position:absolute; width: 191px; clip: rect(0 191 30 175);background-color:#ffffff;" onChange='document.all.construct_units.value=this.options[this.selectedIndex].value'></asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:waternewsConnectionString %>" SelectCommand="select mingcheng dw from 表a"></asp:SqlDataSource>
</asp:DropDownList>
</asp:TableCell>
</asp:TableRow>

[Scorip]

<select style="width:90px;" onchange="setResult(this)">
<option>123</option>
<option>123</option>
<option>123</option>
</select><input id="txtResult" type="text" style="width:70px;border-right:none;position: relative;
  left: -90px;" />
<script>
      function setResult(o)
      {
          $("#txtResult").val($(o).val());
      }
</script>

就这样手写的。。应该有错的地方。。。不过意思能明白吧？position: relative; 表示相对定位

[md5e]

<div style="position:relative"> <input type="text" style="position:absolute;top:0;left:0"/> <select style="position:absolute;top:0;left:0"> </select> </div>

[md5e]

你也可以直接使用控件 FineUI里面有下拉控件,自动补全控件