说明：将代码粘贴到控制台，执行即可（根据自身实际合理使用）。

List<string> ids = new List<string>
{
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8"
};
int count = Math.Min(ids.Count, 2);//每批获取的多少条
int len = ids.Count;//数据总条数
int size = len % count;//需要分几次获取
if (size == 0)
{
size = len / count;
}
else
{
size = (len / count) + 1;
}
Console.WriteLine($"每批取两条需要{size}批");
for (int i = 0; i < size; i++)
{
int fromIndex = i * count;//从哪儿开始
//int toIndex = Math.Min(fromIndex + count, len);//到哪儿结束
List<string> needData = ids.Skip(fromIndex).Take(count).ToList();
Console.WriteLine($"第{i+1}批：" + string.Join("','", needData));
}
Console.ReadKey();