C# Attributes mandatory property.

Question

Hello, I've created attribute like

    [AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
    [Serializable]
    public class TestPropertyAttribute : System.Attribute
    {
        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }string _name;
    }

and I should mark "Name" as mandatory property of this attribute, How to do it? Thanks.

Answer 1

Put it in the constructor instead of just as a separate property:

[AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
[Serializable]
public class TestPropertyAttribute : System.Attribute
{
    readonly string _name;

    public TestPropertyAttribute(string name)
    {
        _name = name;
    }

    public string Name { get { return _name; } }
}

I don't believe you can make it mandatory and use the Name=... syntax when applying the attribute though.