c# - How do i add vertical scroll bar in asp Dropdown list? -


my code 

<asp:dropdownlist id="ddlfrom" runat="server" cssclass="from"></asp:dropdownlist>

and css code .from{ width:250px;height:25px}

height can not large because there large number of items in it. how add vertical scroll bar drop down ?

there few 3rd party controls out there in web, , bing them. put simple workaround involves dropdownextender (of ajax controltoolkit), textbox, listbox, , few lines of javascript.

here textbox hold selected value of listbox. aspx code below:

    <asp:updatepanel id="updatepanel1" runat="server">         <contenttemplate>             <asp:textbox id="textbox1" runat="server" text="select item" cssclass="mytextbox"></asp:textbox>             <div style="padding: 4px;" id="itemsdiv" runat="server">                 <asp:listbox id="listbox1" runat="server" onclick="callme()" cssclass="mydropdown" rows="6">                 </asp:listbox>             </div>             <asp:dropdownextender id="dropdownextender1" runat="server" targetcontrolid="textbox1"                 dropdowncontrolid="itemsdiv">             </asp:dropdownextender>         </contenttemplate>     </asp:updatepanel> <script>    function callme() {             element = document.getelementbyid("listbox1");              str = element.options[element.selectedindex].value;              document.getelementbyid("textbox1").value = str;          }  </script>

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