Question

I have a question about disable button (C#) that I need your help.

in Asp.net (C#), disable the button code:

    Button btn = new Button();
    btn.click += new EventHandler(btn_click);
    btn.Enabled = false;
    btn.UseSubmitBehavior = false;

The generated HTML:
<input type=”button” disabled=”disabled”>

The button is disabled until I use firebug and remove the ‘disabled’ property and change the type property to submit (<input type=”submit”>) then user can click on btn and it can perform btn_click method(postback).

How could we prevent this issue? I try to use CommandName (disable, enable) to mark disable button and inside btn_click method, I check if CommandName== “disable” then stop the function but it is very messy.

Thanks for your help.
Van

Answer 1

Client can remove the Disabled attribute but cannot change the control ViewState. On server side you can do that:

protected void btn_Click(object sender, EventArgs e)
{
     if (btn.Enabled)
     {
           // do something         
     }
}

<asp:Button ID="btn" runat="server" Enabled="false" OnClick="btn_Click" Text="Test" />