如何将对象列表拆分为按元素(日期时间和字符串)分组的子列表C#
我尝试根据datetime的升序和pcName(字符串),在包含9条记录的主列表的基础上创建子列表 我的排序子列表需要如下所示 对象列表1: 26152019-11-22 16:03:22.150,Test1 26152019-11-22 16:03:22.200,Test1 26152019-11-22 16:03:22.250,Test1 26152019-11-22 16:03:22.300,Test1 对象列表2: 26152019-11-22 16:03:22.350,Test2 26152019-11-22 16:03:22.400,Test2 对象列表3: 26152019-11-22 16:03:22.450,Test1 26152019-11-22 16:03:22.500,Test1 对象列表4: 26152019-11-22 16:03:22.550,Test3 此对象列表需要按照ObjectList[0]、ObjectList[1]、ObjectList[2]和ObjectList[3]的顺序执行 我在下面提到了我的示例代码 但这只提供了3个子列表集(Item1)过滤器,基于Test1、Test2&Test3和9个子列表,但我需要上述4个子列表。我想在哪里更改代码请帮帮我如何将对象列表拆分为按元素(日期时间和字符串)分组的子列表C#,c#,linq,sublist,tobjectlist,C#,Linq,Sublist,Tobjectlist,我尝试根据datetime的升序和pcName(字符串),在包含9条记录的主列表的基础上创建子列表 我的排序子列表需要如下所示 对象列表1: 26152019-11-22 16:03:22.150,Test1 26152019-11-22 16:03:22.200,Test1 26152019-11-22 16:03:22.250,Test1 26152019-11-22 16:03:22.300,Test1 对象列表2: 26152019-11-22 16:03:22.350,Test2 26
private void button_Click(object sender, EventArgs e)
{
List<Identity> listOfIdentity = new List<Identity>()
{
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.550"),PcName="Test3"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.300"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.350"), PcName="Test2"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.400"), PcName="Test2"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.200"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.500"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.250"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.450"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.150"), PcName="Test1"}
};
List<Identity> sortedIdentity = listOfIdentity.OrderBy(x => x.QCTime).ThenBy(x => x.PcName).ToList(); // here i order by time and then pc name
var items1 = listOfIdentity.OrderBy(x => x.QCTime).ThenBy(x => x.PcName).GroupBy(x => x.PcName).Select(grp => grp.ToList()).ToList(); //sub list create based with **Test1, Test2 & Test3** (3 sub lists)
var items2 = listOfIdentity.OrderBy(x => x.QCTime).ThenBy(x => x.PcName).GroupBy(x => new { x.QCTime, x.PcName }).Select(grp => grp.ToList()).ToList(); //sub list create based with each time and pc name (9 sublists)
}
class Identity
{
public int id { get; set; }
public DateTime QCTime { get; set; }
public string PcName { get; set; }
}
private void按钮\u单击(对象发送者,事件参数e)
{
List listOfIdentity=新列表()
{
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.550”),PcName=“Test3”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.300”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.350”),PcName=“Test2”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.400”),PcName=“Test2”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.200”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.500”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.250”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.450”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.150”),PcName=“Test1”}
};
List sortedIdentity=listOfIdentity.OrderBy(x=>x.QCTime).ThenBy(x=>x.PcName).ToList();//这里我按时间排序,然后是电脑名
var items1=listOfIdentity.OrderBy(x=>x.QCTime)。然后by(x=>x.PcName)。GroupBy(x=>x.PcName)。选择(grp=>grp.ToList()).ToList();//使用**Test1、Test2和Test3**(3个子列表)创建子列表
var items2=listOfIdentity.OrderBy(x=>x.QCTime).然后by(x=>x.PcName).GroupBy(x=>new{x.QCTime,x.PcName}).选择(grp=>grp.ToList()).ToList();//根据每个时间和pc名称创建子列表(9个子列表)
}
类标识
{
公共int id{get;set;}
公共日期时间QCTime{get;set;}
公共字符串PcName{get;set;}
}
由于您试图按DateTime列进行分组,而该列仅以毫秒为单位变化,因此分组并没有按照您的预期进行。我修改了您的代码如下:
class Identity
{
public int id { get; set; }
public DateTime QCTime { get; set; }
public string PcName { get; set; }
public string QCTimeForGroup
{
get
{
if (QCTime.Millisecond <= 300)
{
return "SL1";
}
else if (QCTime.Millisecond > 300 && QCTime.Millisecond <= 400)
{
return "SL2";
}
else if (QCTime.Millisecond > 400 && QCTime.Millisecond <= 500)
{
return "SL3";
}
return "SL4";
}
}
}
private void button_Click(object sender, EventArgs e)
{
List<Identity> listOfIdentity = new List<Identity>()
{
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.550"),PcName="Test3"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.300"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.350"), PcName="Test2"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.400"), PcName="Test2"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.200"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.500"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.250"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.450"), PcName="Test1"},
new Identity() {id= 2615,QCTime=DateTime.Parse("2019-11-22 16:03:22.150"), PcName="Test1"}
};
List<Identity> sortedIdentity = listOfIdentity.OrderBy(x => x.QCTime).ThenBy(x => x.PcName).ToList(); // here i order by time and then pc name
var items1 = listOfIdentity.OrderBy(x => x.QCTime).ThenBy(x => x.PcName).GroupBy(x => x.PcName).Select(grp => grp.ToList()).ToList(); //sub list create based with **Test1, Test2 & Test3** (3 sub lists)
var items2 = listOfIdentity.OrderBy(x => x.QCTime).ThenBy(x => x.PcName).GroupBy(x => new { x.QCTime, x.PcName }).Select(grp => grp.ToList()).ToList(); //sub list create based with each time and pc name (9 sublists)
var items3 = listOfIdentity.OrderBy(x => x.QCTime).ThenBy(x => x.PcName)
.GroupBy(x => new { x.QCTimeForGroup, x.PcName }).Select(grp
=> grp.ToList()).ToList();
}
类标识
{
公共int id{get;set;}
公共日期时间QCTime{get;set;}
公共字符串PcName{get;set;}
公共字符串QCTimeForGroup
{
得到
{
if(QCTime.millisted 300&&QCTime.millisted 400&&QCTime.millisted x.QCTime).ThenBy(x=>x.PcName.ToList();//这里我按时间排序,然后是电脑名
var items1=listOfIdentity.OrderBy(x=>x.QCTime)。然后by(x=>x.PcName)。GroupBy(x=>x.PcName)。选择(grp=>grp.ToList()).ToList();//使用**Test1、Test2和Test3**(3个子列表)创建子列表
var items2=listOfIdentity.OrderBy(x=>x.QCTime).然后by(x=>x.PcName).GroupBy(x=>new{x.QCTime,x.PcName}).选择(grp=>grp.ToList()).ToList();//根据每个时间和pc名称创建子列表(9个子列表)
var items3=listOfIdentity.OrderBy(x=>x.QCTime)。然后是by(x=>x.PcName)
.GroupBy(x=>new{x.QCTimeForGroup,x.PcName})。选择(grp
=>grp.ToList()).ToList();
}
以下是我使用Linq.Aggregate
的解决方案:
private void按钮\u单击(对象发送者,事件参数e)
{
List listOfIdentity=新列表()
{
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.550”),PcName=“Test3”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.300”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.350”),PcName=“Test2”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.400”),PcName=“Test2”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.200”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.500”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.250”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.450”),PcName=“Test1”},
new Identity(){id=2615,QCTime=DateTime.Parse(“2019-11-22 16:03:22.150”),PcName=“Test1”}
};
List sortedIdentity=listOfIdentity.OrderBy(x=>x.QCTime).ThenBy(x=>x.PcName).ToList();//这里我按时间排序,然后是电脑名
var result=sortedIndentity.Skip(1).Aggregate(新列表{new List{sortedIndentit
public static IEnumerable<IEnumerable<TSource>> SplitByPredicate<TSource>(
this IEnumerable<TSource> source,
Func<TSource, TSource, bool> splitPredicate);
var sublists = listOfIdentity
.OrderBy(x => x.QCTime)
.ThenBy(x => x.PcName)
.SplitByPredicate((x, y) => x.PcName != y.PcName);
public static IEnumerable<List<TSource>> GroupConsecutiveByKey<TSource, TKey>(
this IEnumerable<TSource> source,
Func<TSource, TKey> keySelector);
var sublists = listOfIdentity
.OrderBy(x => x.QCTime)
.ThenBy(x => x.PcName)
.GroupConsecutiveByKey(x => x.PcName);