public override void OnActionExecuted(ActionExecutedContext filterContext)
{
// Only export when ModelState is not valid
if (!filterContext.ModelState.IsValid)
{
// Export if we are redirecting
if (filterContext.Result is RedirectResult ||
filterContext.Result is RedirectToRouteResult ||
filterContext.Result is RedirectToActionResult)
{
if (filterContext.Controller is Controller controller && filterContext.ModelState != null)
{
var modelState = ModelStateHelpers.SerializeModelState(filterContext.ModelState);
controller.TempData[Key] = modelState;
}
}
}
base.OnActionExecuted(filterContext);
}
public override void OnActionExecuted(ActionExecutedContext filterContext)
{
var controller = filterContext.Controller as Controller;
if (controller?.TempData[Key] is string serialisedModelState)
{
// Only Import if we are viewing
if (filterContext.Result is ViewResult)
{
var modelState = ModelStateHelpers.DeserializeModelState(serialisedModelState);
filterContext.ModelState.Merge(modelState);
}
else
{
// Otherwise remove it.
controller.TempData.Remove(Key);
}
}
base.OnActionExecuted(filterContext);
}