Dapper Contrib - Delete

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var isSuccess = connection.Delete(new Invoice {InvoiceID = 1});
}

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var list = new List<Invoice>()
    {
        new Invoice {InvoiceID = 1},
        new Invoice {InvoiceID = 2},
        new Invoice {InvoiceID = 3}
    };

    var isSuccess = connection.Delete(list);
}