Code behind property update from javascript

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Hello,

I have a javaScript function Func() in my user control which updates hidden field value.
I would like to further SET this hiddenfield value to code behind property in a same javascript function (to access in parent aspx.vb page) to access in ASPX.VB without postback.

<script type="text/javascript" >

    function func(id) {

        HFTargetSign = id;
        alert(HFTargetSign);
    }
</script>

Can some one suggest me to implement this ?

Regards,
KV

What I have tried:

i have tried to assign property value in JavaScript, it is not working and gives error

Posted 26-Aug-18 13:18pm

vinod koti

Updated 26-Aug-18 19:47pm

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Er. Puneet Goel 27-Aug-18 1:13am

you have to use asynchronous call to update any server-side property.

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Vincent Maverick Durano · Answer 1 · 2018-08-26T19:48:00

I'm not really sure if I follow you correctly but if you'd like to set a server-side property from JavaScript, then a HiddenField solution should work. For example, you can have a C# property like this:

C#

public string MyServerProperty
{
    get{ return HiddenField1.Value;}
    set{ HiddenField1.Value = value;}
}

Then you can set the value of the HiddenField in your JavaScript like this:

JavaScript

document.getElementById('<%=HiddenField1.ClientID%>').value = 'set whatever value here';