AttributeUsageAttribute.cs

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namespace System;
 
[AttributeUsage(AttributeTargets.Class, Inherited = true)]
public sealed class AttributeUsageAttribute : Attribute
{
    private readonly AttributeTargets _attributeTarget;
 
    private bool _allowMultiple;
 
    private bool _inherited;
 
    internal static readonly AttributeUsageAttribute Default = new AttributeUsageAttribute(AttributeTargets.All);
 
    public AttributeTargets ValidOn => _attributeTarget;
 
    public bool AllowMultiple
    {
        get
        {
            return _allowMultiple;
        }
        set
        {
            _allowMultiple = value;
        }
    }
 
    public bool Inherited
    {
        get
        {
            return _inherited;
        }
        set
        {
            _inherited = value;
        }
    }
 
    public AttributeUsageAttribute(AttributeTargets validOn)
    {
        _attributeTarget = validOn;
        _inherited = true;
    }
 
    internal AttributeUsageAttribute(AttributeTargets validOn, bool allowMultiple, bool inherited)
    {
        _attributeTarget = validOn;
        _allowMultiple = allowMultiple;
        _inherited = inherited;
    }
}