Dapper Contrib - Update

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

    var isSuccess = connection.Update(new Invoice { InvoiceID = 1, Code = "Update_Single_1"});
}

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

    var list = new List<Invoice>()
    {
        new Invoice {InvoiceID = 1, Code = "Update_Many_1"},
        new Invoice {InvoiceID = 2, Code = "Update_Many_2"},
        new Invoice {InvoiceID = 3, Code = "Update_Many_3"}
    };

    var isSuccess = connection.Update(list);
}