Question

I added ValidationSummary Html helper for my View Model class which has 5 required fields. And it works got nice red words missing 1, missing 2 etc.
But I need to display just one message not five of them (something like: “Your input is not valid.”). Can this be done with ValidationSummary?

Answer 1

You have two options (at least):

Either use the validation summary and exclude property errors:

@Html.ValidationSummary(true, "The input is not valid")

or associate a error message with a custom key in your action:

if (!ModelState.IsValid)
{
    ModelState.AddModelError("myerrorsummary", "The input is not valid");
}

and display it on your page:

@Html.ValidationMessage("myerrorsummary")