Unobtrusive validation

Client-side validation in asp.net MVC is unobtrusive. To turn on client side validation and unobtrusive JavaScript, make sure the following 2 keys under appSettings element within web.config file is turned on. This will turn on client side validation and unobtrusive JavaScript for the entire application.

<appSettings>
  <add key="ClientValidationEnabled" value="true" />
  <add key="UnobtrusiveJavaScriptEnabled" value="true" />
</appSettings> 

It possible to turn these features on/off using code.  This features can be enabled or disabled in Application_Start() event handler in Global.asax.

protected void Application_Start()
{
    HtmlHelper.UnobtrusiveJavaScriptEnabled = true;
    HtmlHelper.ClientValidationEnabled = true;
}

It possible to turn on/off for a specific view.

@{
    Html.EnableClientValidation(true);
    Html.EnableUnobtrusiveJavaScript(true);
}