Question

Say I have the model property bool? IsCool

so I may want to display ‘Y‘ if true and ‘N‘ if false

<span>@Model.IsCool == true ? Y : N</span>

I think that should work.

However how could you get it to work if you wanted a third option of '-' displayed if the value is null?

Answer 1

@(!Model.IsCool.HasValue ? "-" : Model.IsCool.Value ? "Y" : "N")

HasValue is simply private boolean property of Nullable type. It sets to true when Nullable has a value.
And Value just a property of the T type, for “bool?” it will be “bool”:

    public T Value {
        get {
            if (!HasValue) { 
                ThrowHelper.ThrowInvalidOperationException(ExceptionResource.InvalidOperation_NoValue);
            } 
            return value; 
        }
    }