Access DevExpress CheckBox valuein Action Of an Controller.

@using (Html.BeginForm()) {
    @Html.DevExpress().CheckBox(checkBoxSettings => {
        checkBoxSettings.Name = "includeHistory";
        checkBoxSettings.Text = "Include History";
        checkBoxSettings.Properties.ValueChecked = "true";
    checkBoxSettings.Properties.ValueType=typeof(string);
    }).GetHtml()
    @Html.DevExpress().Button(buttonSettings => {
        buttonSettings.Name = "Submit";
        buttonSettings.Text = "Submit";
        buttonSettings.UseSubmitBehavior = true;
    }).GetHtml()

}

[HttpPost]
       public ActionResult Index(FormCollection collection)
       {

           //as if we aceesss CheckBoxExtension.GetValue<Bollean>("includeHistory"); it will not work for unchecked condition and code will throw object refrence not set.
           //So to achive unchecked condition of checkbox ,we can collect it using string variable which will have null if not checked
           string result = CheckBoxExtension.GetValue<string>("includeHistory");
           if (Convert.ToBoolean(result))
           {
               //Do something
           }
           else
           {
               //Do something
           }

           return View();
       }