找出这段生成报表代码中的执行错误。
csharp
using System;
using System.Collections.Generic;
using System.Linq;
IEnumerable<int> orderIds = ReadOrderIds();
Console.WriteLine($"count: {orderIds.Count()}");
Console.WriteLine($"ids: {string.Join(",", orderIds)}");
static IEnumerable<int> ReadOrderIds()
{
foreach (int id in new[] { 101, 102 })
{
Console.WriteLine($"read {id}");
yield return id;
}
}