How to bring value of selected radio button to server side

Question

After getting the value, how can I bring the var to ASP.net server side so I can use it in server side?

function btnSelect_OnClick() {     
        var PCType;
        if (document.getElementById('r1').checked) {
            PCType = document.getElementById('r1').value);            
    }
}

Answer 1

If you don't want to use an AJAX solution, consider storing the value in a HiddenField .

JavaScript

function btnSelect_OnClick() {     
    var PCType = "";
    if (document.getElementById('r1').checked) {
        PCType = document.getElementById('r1').value);        
    }

    document.getElementById('hfPCType').value = PCType;
}

ASP.Net

<asp:HiddenField runat="server" id="hfPCType" ClientIDMode="static" />

C#

string PCType = hfPCType.Value;