Disable Submit button in case of multiple click.. (C#)

Question

My Problem is ,I have a simple web form, which contains two textboxes and a button.there are some asp.net validator controls on page.so i want client side disabling of butto

Answer 1

If you disable the button then form submission will not happen. Correct way would be to set timer to disable the button. I would also suggest to use submit behavior instead of putting post-back event ref. For example,

function clickHandler(id, validate, validationGroup) {
   var isValid = true;
   if (validate && typeof(Page_ClientValidate) == 'function') {
     isValid = validationGroup? Page_ClientValidate(validationGroup): Page_ClientValidate();
   }
   if (isValid)
   {
      // set timer to disable the button
      var b = document.getElementById(id);
      var f = function() { b.disabled = 'disabled'; };
      setTimeout(f, 100);
      return true;
   }
   return false;
}

And now attach function to your button

protected override void OnPreRender(EventArgs e)
{
    this.Attributes.Add("onclick", 
       string.Format("return clickHandler('{0}', {1}, '{2}')", 
       this.ClientID, this.CausesValidation ? "true" : "false", 
       this.ValidationGroup));
}