これが私が私のために働いたことをやった結果です:
namespace ConsoleApplication3
{
class Program
{
internal class PiData
{
public string HeaderName { get; set; }
public DateTime TimeStamp { get; set; }
public DateTime End { get; set; }
public double Value { get; set; }
}
static void Main(string[] args)
{
var PD = new List<PiData>()
{
new PiData() { HeaderName="Test1", End = DateTime.Now.AddSeconds(15), TimeStamp = DateTime.Now, Value = 0.01 },
new PiData() { HeaderName="Testf2", End = DateTime.Now.AddSeconds(15), TimeStamp = DateTime.Now, Value = 0.51 },
new PiData() { HeaderName="Testff3", End = DateTime.Now.AddSeconds(15), TimeStamp = DateTime.Now, Value = 0.71 },
new PiData() { HeaderName="Testfsd4", End = DateTime.Now.AddSeconds(15), TimeStamp = DateTime.Now, Value = 0.41 },
new PiData() { HeaderName="Test1", End = DateTime.Now.AddSeconds(30), TimeStamp = DateTime.Now.AddSeconds(15), Value = 0.01 },
new PiData() { HeaderName="Testf2", End = DateTime.Now.AddSeconds(30), TimeStamp = DateTime.Now.AddSeconds(15), Value = 0.51 },
new PiData() { HeaderName="Testff3", End = DateTime.Now.AddSeconds(30), TimeStamp = DateTime.Now.AddSeconds(15), Value = 0.71 },
new PiData() { HeaderName="Testfsd4", End = DateTime.Now.AddSeconds(30), TimeStamp = DateTime.Now.AddSeconds(15), Value = 0.41 },
};
var result2 = PD.Pivot(emp => emp.TimeStamp, emp2 => emp2.HeaderName, lst => lst.Sum(a => a.Value));
StringBuilder sb = new StringBuilder();
List<string> columns = new List<string>();
columns.Add("TimeStamp");
columns.Add("End");
foreach (var item in PD.Select(a => a.HeaderName).Distinct())
{
columns.Add(item);
}
foreach (var item in columns)
{
sb.Append(item + ",");
}
sb.Remove(sb.Length - 1, 1);
sb.AppendLine();
foreach (var row in result2)
{
sb.Append(row.Key + "," + row.Key.AddSeconds(10).ToString() + ",");
foreach (var column in row.Value)
{
sb.Append(column.Value + ",");
}
sb.Remove(sb.Length - 1, 1);
sb.AppendLine();
}
Console.WriteLine(sb.ToString());
Console.WriteLine("----");
}
}
public static class LinqExtenions
{
public static Dictionary<TFirstKey, Dictionary<TSecondKey, TValue>> Pivot<TSource, TFirstKey, TSecondKey, TValue>(this IEnumerable<TSource> source, Func<TSource, TFirstKey> firstKeySelector, Func<TSource, TSecondKey> secondKeySelector, Func<IEnumerable<TSource>, TValue> aggregate)
{
var retVal = new Dictionary<TFirstKey, Dictionary<TSecondKey, TValue>>();
var l = source.ToLookup(firstKeySelector);
foreach (var item in l)
{
var dict = new Dictionary<TSecondKey, TValue>();
retVal.Add(item.Key, dict);
var subdict = item.ToLookup(secondKeySelector);
foreach (var subitem in subdict)
{
dict.Add(subitem.Key, aggregate(subitem));
}
}
return retVal;
}
}
}