How to get value in C# from java script?

Question

I need to get a value that I got in Javascript to my code behind file..

My design code is:

<asp:DropDownList ID="ddlStatusOverview" runat="server" Width="95px" onchange="CheckSelectedItem(this)" >

</asp:DropDownList>

I'm using the dropwonlist in "ItemTemplate" of asp:ListView.

My javascript coding is:

<script type="text/javascript">
function CheckSelectedItem(ddl) {
alert(ddl.value);
}

I want to get that "dll.value" value in code behind.. I already used Webmethod concept. But my problem is I need to get the value in ".ascx" page.. How to do that..?

I don't know how to use hidden field value concept too..

use server side methods, OnSelectedIndexChanged...and read values from arguments — A.T.
– A.T., Commented Nov 25, 2013 at 10:50
I coudln't use the "OnSelectedIndexChanged" method as I'm using it inside a table.. — Sakthi
– Sakthi, Commented Nov 25, 2013 at 10:56

Community · Accepted Answer · 2017-05-23 12:19:13Z

1

Do this :

Add a hidden field element :

<input name='lala' id='lala' type='hidden'/>

Add this :

function CheckSelectedItem(ddl) {
  document.getElementByID('lala').value=ddl.value;
}

On server side :

you can get the value by :

Request.Form["lala"].ToString();

Accoring to your comment :

If I want to call a server side function from javascript with this "ddl.value" means, how to do that?

Please read this

ASP.NET pass a javascript value in server side

edited May 23, 2017 at 12:19

CommunityBot

11 silver badge

answered Nov 25, 2013 at 10:51

Royi Namir

149k145 gold badges502 silver badges833 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Sakthi Over a year ago

Thanks.. If I want to call a server side function from javascript with this "ddl.value" means, how to do that?

nphx · Accepted Answer · 2013-11-25 10:56:04Z

0

Introduce a hidden field.

<script type="text/javascript">
    function CheckSelectedItem(ddl) {
        document.getElementByID('hfStatus').value = ddl.value;

        // if using jQuery
        // $("hfStatus").val(ddl.value);
    }
</script>

<asp:HiddenField runat="server" ID="hfStatus" />

Now you can directly access hfStatus from code-behind.

answered Nov 25, 2013 at 10:56

nphx

1,4273 gold badges19 silver badges30 bronze badges

Collectives™ on Stack Overflow

How to get value in C# from java script?

2 Answers 2

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related