Question

I’m using an html file like below (tv.html):

<form action="myaspx.aspx?appid=5018" method="post" id="formSubscription" name="formSubscription">
<input type="checkbox" id="chckIsConfirm" name="chckIsConfirm"/> I Confirm
            <input type="submit" value="Ok" />
</form>

And trying to get it from “myaspx.aspx”. And the code behind is:

protected void Page_Load(object sender, EventArgs e)
{
            if (!IsPostBack)
            {
               var r = HttpContext.Current.Request["chckIsConfirm"];
                 //Or
                NameValueCollection nvc = Request.Form;
               //Or
              var a = Request.Form.AllKeys;
            }
}

But I cannot pass the value of “chckIsConfirm”. All keys comes empty.. What am I doing wrong?

UPDATE: Only when I check the checkbox it comes as “ON” other times just NULL.

Thanks in advance

Answer 1

That’s the default behavior for checkboxes in most browsers. If it’s not checked the browser will not send it with the request. As a workaround add a hidden field that has the same name as the checkbox and value “0”, “OFF”, “FALSE” or whatever you want the “unchecked” value to be.