Creating a hidden field in codebehind and accessing it via clientside javascript

Question

I want to add a hidden field programmatically to an asp.net page, read and change it via javascript. So far my code fails at reading the added hidden field.

Here is a si

Answer 1

You could try something like this:

protected void Page_Load(object sender, EventArgs e)
{
    HtmlInputHidden hidden2 = new HtmlInputHidden();
    hidden2.ID = "Here you will put the id of the control";
    hidden2.Value = "Here you will put your value";
    this.Controls.Add(hidden2);
}

At the top of your source code file, you have to add this statement:

using System.Web.UI.HtmlControls;

Answer 2

The main problem was that the following line was missing in the aspx page:

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
    CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>

The codebehind was never executed.