Assign JavaScript values to C# Variable

Question

I have a Javascript function that pulls down variables, like so:

   function OnClientCloseSecure(oWnd, args) {
       var arg = args.get_argument();

                


        

Answer 1

JavaScript

<script type="text/javascript">
    function OnClientCloseSecure(oWnd, args) {
        var arg = args.get_argument();
        if (arg) {
            var ResultCode = arg.ResultCode;
            var PONumber = arg.PONumber;
            document.getElementById('<%=lbl.ClientID %>').innerHTML = ResultCode;
        }
    }

</script> 

Mark Up

<asp:Label ID="lbl" runat="server" ></asp:Label>

Answer 2

One way would be to create hidden value and set the runat attribute to server. you can get the value.

    <script type="text/javascript">
   function abc() 
    { 
      var str="value"; 
      document.getElementById("Hidden1").value=str; 
    } 

    </script> 

<input id="Hidden1" type="hidden" runat="server" />

Code Behind:

    string value = Hidden1.Value;