DescriptionAttribute.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.ComponentModel;
 
[AttributeUsage(AttributeTargets.All)]
public class DescriptionAttribute : Attribute
{
    public static readonly DescriptionAttribute Default = new DescriptionAttribute();
 
    public virtual string Description => DescriptionValue;
 
    protected string DescriptionValue { get; set; }
 
    public DescriptionAttribute()
        : this(string.Empty)
    {
    }
 
    public DescriptionAttribute(string description)
    {
        DescriptionValue = description;
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj is DescriptionAttribute descriptionAttribute)
        {
            return descriptionAttribute.Description == Description;
        }
        return false;
    }
 
    public override int GetHashCode()
    {
        return Description?.GetHashCode() ?? 0;
    }
 
    public override bool IsDefaultAttribute()
    {
        return Equals(Default);
    }
}