Blazor Enum range, CS1729 'RangeAttribute' does not contain a constructor that takes 4 arguments

Question

I was rewriting a code snippet from BlazorApp to BlazorApp Core based application. Suddenly now it throws an error on defining RangeAttribute.

Why am I getting the error:

"CS1729 'RangeAttribute' does not contain a constructor that takes 4 arguments TradeNow.Client"

My code is as follows:

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Threading.Tasks;

namespace TradeNow.Client.Pages.Adverts.Data
{
    public class SellBuy
    {
            [Required]
            [Range(typeof(SellBuyN), nameof(SellBuyN.Sell), typeof(SellBuyN), nameof(SellBuyN.Buy), ErrorMessage = "Select if you are buying or selling")]
            public SellBuyN SellBuyN { get; set; }
    }
    public enum SellBuyN { Sell, Unknown, net, smth, Buy }
}

It doesn't seem .Net 5 ever admitted 4 parameters in this constructor. Have you recently upgraded from a different version? — Daniel Manta
– Daniel Manta, Commented Dec 12, 2020 at 17:43
@derloopkat I was using preview before, also if I put one parameter, then error is same just states 1 argument.. — Tomas Am
– Tomas Am, Commented Dec 12, 2020 at 20:26

Paul Sinnema · Accepted Answer · 2020-12-12 20:25:51Z

1

From the documentation at: https://learn.microsoft.com/en-us/dotnet/api/system.componentmodel.dataannotations.rangeattribute?view=net-5.0

You can see the constructor never take 4 arguments:

Constructors
CONSTRUCTORS
RangeAttribute(Double, Double)  
Initializes a new instance of the RangeAttribute class by using the specified minimum and maximum values.

RangeAttribute(Int32, Int32)    
Initializes a new instance of the RangeAttribute class by using the specified minimum and maximum values.

RangeAttribute(Type, String, String)    
Initializes a new instance of the RangeAttribute class by using the specified minimum and maximum values and the specific type.

answered Dec 12, 2020 at 20:25

Paul Sinnema

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