Use case for generic attributes in c#

test.cs

using System;
[AttributeUsage(AttributeTargets.All, Inherited = false, AllowMultiple = true)]
sealed class LoggerAttribute<T> : Attribute
{
    readonly string _template;

    public LoggerAttribute(string positionalString)
    {
        _template = positionalString;
    }

    public string PositionalString
    {
        get { return _template; }
    }
}


[Logger<InsertFoo>($"Inserting {Id} -> {Name}")]
class InsertFoo
{
    public int Id { get; set; }
    public string Name { get; set; }
}

Withfunc.cs

using System;
[AttributeUsage(AttributeTargets.All, Inherited = false, AllowMultiple = true)]
sealed class LoggerAttribute<T> : Attribute
{
    readonly Func<T, string> _template;

    public LoggerAttribute(Func<T, string> positionalString)
    {
        _template = positionalString;
    }

    public Func<T, string> PositionalString
    {
        get { return _template; }
    }
}


[Logger<InsertFoo>(f => $"Inserting {f.Id} -> {f.Name}")]
class InsertFoo
{
    public int Id { get; set; }
    public string Name { get; set; }
}