MVC not validate empty string

Question

I have razor file where I define html form with text box for string:

    @using (Html.BeginForm()) {
        @Html.ValidationSummary(true)
        

        

Answer 1

what does your viewmodel look like?

You can add a DataAnnotation attribute to your Name property in your viewmodel:

public class MyViewModel
{
    [Required(ErrorMessage="This field can not be empty.")]
    public string Name { get; set; }
}

Then, in your controller you can check whether or not the model being posted is valid.

public ActionResult MyAction(ViewModel model)
{
    if (ModelState.IsValid)
    {
        //ok
    }
    else
    {
        //not ok
    }
}