DataObjectAttribute.cs

Go to the documentation of this file.

using System.Diagnostics.CodeAnalysis;
 
namespace System.ComponentModel;
 
[AttributeUsage(AttributeTargets.Class)]
public sealed class DataObjectAttribute : Attribute
{
    public static readonly DataObjectAttribute DataObject = new DataObjectAttribute(isDataObject: true);
 
    public static readonly DataObjectAttribute NonDataObject = new DataObjectAttribute(isDataObject: false);
 
    public static readonly DataObjectAttribute Default = NonDataObject;
 
    public bool IsDataObject { get; }
 
    public DataObjectAttribute()
        : this(isDataObject: true)
    {
    }
 
    public DataObjectAttribute(bool isDataObject)
    {
        IsDataObject = isDataObject;
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj == this)
        {
            return true;
        }
        if (obj is DataObjectAttribute dataObjectAttribute)
        {
            return dataObjectAttribute.IsDataObject == IsDataObject;
        }
        return false;
    }
 
    public override int GetHashCode()
    {
        return IsDataObject.GetHashCode();
    }
 
    public override bool IsDefaultAttribute()
    {
        return Equals(Default);
    }
}