如何按不同分组聚合linq查询

using System.Linq;

var data = new List<YourDataType>
{
    new YourDataType { Property1 = value1, Property2 = value2, ... },
    // 添加更多数据项
};

var query = from item in data
            group item by item.GroupingProperty into groupedData
            select new
            {
                GroupKey = groupedData.Key,
                Count = groupedData.Count(),
                Sum = groupedData.Sum(x => x.PropertyToSum),
                // 添加更多聚合操作
            };

foreach (var result in query)
{
    Console.WriteLine($"Group: {result.GroupKey}, Count: {result.Count}, Sum: {result.Sum}");
}