Set default value in @Html.TextboxFor MVC Core 2

Question

I've got a text box that upon initial page load (and assuming an empty model) the html TextBoxFor helper populates a text box with 0. Since 0 is a value, I want to change this behavior to "" (null, nothing, etc.). Given the amount of literature out there on this, I thought this should be straightforward; however, I can't get it to work. Here's what I've got (I've parsed it down to keep it simple, pardon any mistakes)

Model:

public class Something_ViewModel
{ [DisplayName("Feet:")]
    public int Feet{ get; set; }
}

Controller:

public IActionResult RetainedOwnership()
    {
        Models.Analytics.Something_ViewModel RO_VM = new Models.Analytics.Something_ViewModel();
       Return View(RO_VM);
    }

And the tag Helpers I've tried:

    @Html.TextBoxFor(Model => Model.Feet, new { id = "txtFeet", @Value = Model.Feet.ToString() ?? "" })
    @Html.TextBoxFor(Model => Model.Feet, new { id = "txtFeet", Value = Model.Feet.ToString() ?? "" })
    @Html.TextBoxFor(Model => Model.Feet, new { id = "txtFeet", Value = "" })
    @Html.TextBoxFor(Model => Model.Feet, new {Value = "" })
    @Html.TextBoxFor(Model => Model.Feet, new {@Value = "" })
    @Html.TextBoxFor(Model => Model.Feet, new {id = "txtFeet"})

Under no circumstances should you ever set the value attribute when using the HtmlHelper methods — user3559349
– user3559349, Commented Jan 27, 2018 at 22:26

tearius · Accepted Answer · 2018-01-27 20:29:59Z

1

You might want to change Feet datatype to int?. Default value for that would be null.

answered Jan 27, 2018 at 20:29

tearius

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1 Comment

Chris Over a year ago

That worked. For everyone else this is what I discovered- int, decimal, float, etc. value types are by default required and non-nullable. If you want it to be nullable, you have to do this:System.Nullable<int> or the shorthand for this is int? .

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