Retrieve HtmlSelect option values from asp.net code behind

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I have a HTML select control in ASP.Net WebForm application. Its option values are added from jquery in client side. I would like to read those values from server side when the page is posted back. I have the following code, but it does not work. Option values added from client side are not available in code behind. How can i make those values available to code behind?

//Client code

HTML

<select title="Select one" id="selectBooks" multiple="multiple">
     <option value="1">test</option> //added in client side.
<select>

//Code behind

C#

System.Web.UI.HtmlControls.HtmlSelect books= (System.Web.UI.HtmlControls.HtmlSelect)form1.FindControl("selectBooks");
foreach (ListItem item in books.Items)
{
   string test = item.Text.ToString();
}

Posted 30-Sep-13 20:37pm

Saumitra Kumar Paul

Updated 30-Sep-13 20:49pm

v3

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**Azee** · Answer 1 · 2013-09-30T20:51:00

Hello there,

FindControl only works if you are trying to find a Server Control (a control with attribute runat="server") and your select is an HTML control.

You can access it from the Server Side with and without using FindControl, if you add a runat="server" attribute to it.

Hope it helps

Azee...

Singh Gyan · Answer 2 · 2013-09-30T22:41:00

Solution 2

I think you need to use RegsiterStartupScript to call javascript function form server side.
Like this you can use.

ClientScript.RegisterStartupScript(GetType(),"id","callMyJSFunction()",true);

-SG

Posted 30-Sep-13 22:41pm

Singh Gyan