How to disable all controls in ASP.NET page

You can disable all controls on an ASP.NET page using server-side code in the code-behind file and using client side JavaScript. Here's how you can achieve this:

  1. Code-Behind Approach: You can iterate through all controls recursively on the page and disable them. This is done in the code-behind file (.aspx.cs or .aspx.vb).

  2. JavaScript Approach: You can use JavaScript to disable controls on the client-side. However, this approach might not be as secure as the server-side approach, as it relies on client-side execution.

Let's start with the code-behind approach:

using System;
using System.Web.UI;

public partial class YourPage : Page
    protected void Page_Load(object sender, EventArgs e)

    private void DisableControls(Control parent)
        foreach (Control c in parent.Controls)
            if (c is TextBox)
                ((TextBox)c).Enabled = false;
            else if (c is Button)
                ((Button)c).Enabled = false;
            // Add more conditions for other types of controls as needed
            // For example: CheckBox, DropDownList, etc.

            // Recursively disable controls inside containers like panels or group controls
            if (c.Controls.Count > 0)


  • In the Page_Load event handler, we call the DisableControls method, passing the page instance as the starting point.
  • The DisableControls method iterates through each control within the parent control (initially the page).
  • Depending on the type of control, we disable it. You can add more control types and disable them as needed.
  • We also check if the control has child controls, and if so, recursively call DisableControls on them.

Now, the JavaScript approach:

<script type="text/javascript">
    function disableAllControls() {
        var inputs = document.getElementsByTagName("input");
        for (var i = 0; i < inputs.length; i++) {
            inputs[i].disabled = true;
        var selects = document.getElementsByTagName("select");
        for (var i = 0; i < selects.length; i++) {
            selects[i].disabled = true;
        var textareas = document.getElementsByTagName("textarea");
        for (var i = 0; i < textareas.length; i++) {
            textareas[i].disabled = true;
        var buttons = document.getElementsByTagName("button");
        for (var i = 0; i < buttons.length; i++) {
            buttons[i].disabled = true;
        // Add more control types as needed


  • This script disables all input elements, select elements, textareas, and buttons on the page by iterating through them and setting their disabled property to true.
  • You can call this JavaScript function on page load or any other event you desire. For example, you can call it in the onload attribute of the body tag: <body onload="disableAllControls()">.

Both approaches achieve the same result of disabling controls on the ASP.NET page, but the code-behind approach is more secure and reliable since it operates on the server-side.

Asp.Net Ajax Control Toolkit tutorials.

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