DisplayNameAttribute.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.ComponentModel;
 
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method | AttributeTargets.Property | AttributeTargets.Event)]
public class DisplayNameAttribute : Attribute
{
    public static readonly DisplayNameAttribute Default = new DisplayNameAttribute();
 
    public virtual string DisplayName => DisplayNameValue;
 
    protected string DisplayNameValue { get; set; }
 
    public DisplayNameAttribute()
        : this(string.Empty)
    {
    }
 
    public DisplayNameAttribute(string displayName)
    {
        DisplayNameValue = displayName;
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj is DisplayNameAttribute displayNameAttribute)
        {
            return displayNameAttribute.DisplayName == DisplayName;
        }
        return false;
    }
 
    public override int GetHashCode()
    {
        return DisplayName?.GetHashCode() ?? 0;
    }
 
    public override bool IsDefaultAttribute()
    {
        return Equals(Default);
    }
}