Setting a textbox value by JQuery

Question

I am setting a TextBox controls value via an ajax post.

$(\'#txtSite\').val(msg.d.SiteName);

This is working and the value of the

Answer 1

You have your textbox set to Enabled="false" which renders in the browser with a disabled="disabled". Disabled form inputs are not submitted.

The solution is either to make the textbox enabled and read-only:

txtSite.Enabled = true;
txtSite.Attributes.Add("readonly", "readonly"); //on prerender event or somewhere else

or to use a different element set with runat="server", like a <asp:HiddenField /> and update both the textbox and the alternate element with your AJAX call:

success: function(msg) {
    if (msg.d != null) {
        $('#txtSite').val(msg.d.SiteName);
        $('#hiddenInput').val(msg.d.SiteName);
    } else {
            $('#txtSite').val('');
    }
}

Answer 2

Yes, I definitely think, your text box should have a name attribute in html code, check for it. Without a 'name' attribute browser won't post this input box's data to server and thus you won't get it in server side c# code. Hope, this make sense..