正在获取插入行的ID

我正试图使用sql输出子句从数据库中获取新插入记录的id，即

insert into table1(forename, surname) output inserted.id values(@forename, @surname)

我正试图捕获这样的id：

Int32 id = (int)command.ExecuteScalar;

这给了我一条错误消息：

Compiler Error Message: CS0428: Cannot convert method group 'ExecuteScalar' to non-delegate type 'int'. Did you intend to invoke the method?

不确定我做错了什么。

以下是现有代码的大摘录：

using (connection = new SqlConnection(ConfigurationManager.AppSettings["connString"]))
{
    using (command = new SqlCommand("insert into table1(forename, surname) OUTPUT INSERTED.ID values(@forename, @surname)", connection))
    {
        command.Parameters.Add("@forename", SqlDbType.VarChar, 255).Value = forename;
        command.Parameters.Add("@surname", SqlDbType.VarChar, 255).Value = surname;
        command.Connection.Open();
        id = (int)command.ExecuteScalar;
    }
}