AmbientValueAttribute.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.ComponentModel;
 
[AttributeUsage(AttributeTargets.All)]
public sealed class AmbientValueAttribute : Attribute
{
    public object? Value { get; }
 
    [RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")]
    public AmbientValueAttribute([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)] Type type, string value)
    {
        try
        {
            Value = TypeDescriptor.GetConverter(type).ConvertFromInvariantString(value);
        }
        catch
        {
        }
    }
 
    public AmbientValueAttribute(char value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(byte value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(short value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(int value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(long value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(float value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(double value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(bool value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(string? value)
    {
        Value = value;
    }
 
    public AmbientValueAttribute(object? value)
    {
        Value = value;
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj == this)
        {
            return true;
        }
        if (obj is AmbientValueAttribute ambientValueAttribute)
        {
            if (Value == null)
            {
                return ambientValueAttribute.Value == null;
            }
            return Value.Equals(ambientValueAttribute.Value);
        }
        return false;
    }
 
    public override int GetHashCode()
    {
        return base.GetHashCode();
    }
}