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converting int to List<double?>, ChartJS Core

I'm working on a web application. I found this interesting https://github.com/mattosaurus/ChartJSCore. to use charts in my application.
The charts are working successfully in most pages. But in one page i have the following idea:
I have 3 properties (Appropriate, Inappropriate, NoInteraction) in my model all with type (int) and i need to keep it as integer to manipulate other functionalities in the application. Each property will be represented as one series in the chart and it should be list or array of 15 integer always.
Here is my properties in Session Model:
public int DayNumber { get; set; }
public int Appropriate { get; set; }
public int NotAppropriate { get; set; }
public int NoInteraction { get; set; }
Here is my Controller:
public IActionResult Details()
{
var result = _db.Session.ToList();
//I want this appropriateLine to be passed to GenerateLineChart method but whenever i tried i came up with an error of converting types.
var AppropriateLine = result.Select(x => x.Appropriate).ToList();
Chart lineChart = GenerateLineChart();
ViewData["LineChart"] = lineChart;
return View();
}
private static Chart GenerateLineChart()
{
Chart chart = new Chart();
chart.Type = Enums.ChartType.Line;
ChartJSCore.Models.Data data = new ChartJSCore.Models.Data();
data.Labels = new List<string>() { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15" };
LineDataset AppropriateDataset = new LineDataset()
{
Label = "Appropriate Data Line",
Data = new List<double?>() { 2, 6, 2, 6, 2, 6 }, //Here i want this to be filled with data from AppropriateLine variable, it works for the fixed value only
Fill = "false",
LineTension = 0.1,
BackgroundColor = ChartColor.FromHexString("#FF6384"),
BorderColor = ChartColor.FromHexString("#FF6384"),
BorderCapStyle = "butt",
BorderDash = new List<int> { },
BorderDashOffset = 0.0,
BorderJoinStyle = "miter",
PointBorderColor = new List<ChartColor>() { ChartColor.FromHexString("#FF6384"), },
PointBackgroundColor = new List<ChartColor>() { ChartColor.FromHexString("#fff") },
PointBorderWidth = new List<int> { 1 },
PointHoverRadius = new List<int> { 5 },
PointHoverBackgroundColor = new List<ChartColor>() { ChartColor.FromHexString("#FF6384"), },
PointHoverBorderColor = new List<ChartColor>() { ChartColor.FromHexString("#FF6384"), },
PointHoverBorderWidth = new List<int> { 2 },
PointRadius = new List<int> { 1 },
PointHitRadius = new List<int> { 10 },
SpanGaps = false
};
data.Datasets = new List<Dataset>();
data.Datasets.Add(AppropriateDataset);
Options options = new Options()
{
Scales = new Scales()
};
Scales scales = new Scales()
{
YAxes = new List<Scale>()
{
new CartesianScale()
}
};
CartesianScale yAxes = new CartesianScale()
{
Ticks = new Tick()
};
Tick tick = new Tick()
{
Callback = "function(value, index, values) {return '' + value;}"
};
yAxes.Ticks = tick;
scales.YAxes = new List<Scale>() { yAxes };
options.Scales = scales;
chart.Options = options;
chart.Data = data;
return chart;
}
How can i implement this "Explicit Casting" of appropriateLine variable which is (int) before passing it to GenerateLineChart().
Note that i don't want to change Model properties type since many functions depend on it. Also, I cannot change Data type from List<double?> since many other problems solved by adding this.
I tried many casting solutions but none of them works for me such as:
(List<double?>)result.Select(x => x.Appropriate);
private static Chart GenerateLineChart((List<double?>)AppropriateLine)
I've read about "Convert all" method but not worked.
Any help is much appreciated,
Thanks in advance.

Based on what you mention, it seems that the data passed to GenerateLineChart will only be used for UI purposes. That is, this method can get an appropriate copy of the original data. If this is the case, then, the solution you attempted with
(List<double?>)result.Select(x => x.Appropriate)
was very close, but the cast needs to be done inside Select, i.e.
result.Select(x => (double?)x.Appropriate)
Here is a sketch of your code with that change
public IActionResult Details()
{
var result = _db.Session.ToList();
var AppropriateLine = result.Select(x => (double?)x.Appropriate).ToList();
var lineChart = GenerateLineChart(AppropriateLine);
// Rest or your code
}
private static Chart GenerateLineChart(IEnumerable<double?> data)
{
// Your code as is here ....
LineDataset AppropriateDataset = new LineDataset()
{
Data = data,
// Rest of your code
}
// ....
}

maybe you can check at the moment that you need the list if the number is double or int bool isInt = d == (int)d; and parse to use it only for that time on an aux.

c# Resort a list

This is a pretty complicated sort. Basically I take a list of Answers and I order them by Question priority first. Priority is a zero based integer (0 being the highest priority).
What I want to do then, is sort each answer by it's priority.
For example, like this:
var answers = new List<AnswerRequestModel>
{
new AnswerRequestModel
{
Id = 1,
Priority = 0,
Text = "Very high"
},
new AnswerRequestModel
{
Id = 2,
Priority = 1,
Text = "High"
},
new AnswerRequestModel
{
Id = 3,
Priority = 2,
Text = "Medium"
},
new AnswerRequestModel
{
Id = 4,
Priority = 3,
Text = "Low"
}
};
This assumes there is only one question. If there were two questions:
var answers = new List<AnswerRequestModel>
{
new AnswerRequestModel
{
Id = 1,
Priority = 0,
Question = new QuestionRequestModel { Type = QuestionType.Two },
Text = "Very high",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Very high", Operator = "=", Field = "quality"} }
},
new AnswerRequestModel
{
Id = 2,
Priority = 1,
Question = new QuestionRequestModel { Type = QuestionType.Two },
Text = "High",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "High", Operator = "=", Field = "quality"} }
},
new AnswerRequestModel
{
Id = 3,
Priority = 2,
Question = new QuestionRequestModel { Type = QuestionType.Two },
Text = "Medium",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Medium", Operator = "=", Field = "quality"} }
},
new AnswerRequestModel
{
Id = 4,
Priority = 3,
Question = new QuestionRequestModel { Type = QuestionType.Two },
Text = "Low",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Low", Operator = "=", Field = "quality"} }
},
new AnswerRequestModel
{
Id = 5,
Priority = 0,
Question = new QuestionRequestModel { Type = QuestionType.Two, Priority = 1},
Text = "Blacks",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Blacks", Operator = "=", Field = "colour"} }
},
new AnswerRequestModel
{
Id = 6,
Priority = 1,
Question = new QuestionRequestModel { Type = QuestionType.Two, Priority = 1 },
Text = "Silvers",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Silvers", Operator = "=", Field = "colour" } }
},
new AnswerRequestModel
{
Id = 7,
Priority = 2,
Question = new QuestionRequestModel { Type = QuestionType.Two, Priority = 1 },
Text = "Reds",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Blues", Operator = "=", Field = "colour" } }
},
new AnswerRequestModel
{
Id = 8,
Priority = 3,
Question = new QuestionRequestModel { Type = QuestionType.Two, Priority = 1 },
Text = "Yellows",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Yellows", Operator = "=", Field = "colour" } }
}
};
In both these examples, the order is correct. But now comes the complication.
If I select an answer. I need it to resort, also if the answers and questions come in the wrong order I want them to be sorted correctly.
The method needs to also work when selecting multiple answers.
My method currently looks like this:
public IList<AnswerRequestModel> SortAnswersByPriority(IList<AnswerRequestModel> answers)
{
if (!answers.Any()) return answers;
var chosenAnswers = answers.Where(m => m.Active).ToList();
var sortedAnswers = answers.OrderBy(m => m.Question.Priority).ThenBy(m => m.Priority);
if (!chosenAnswers.Any())
return sortedAnswers.ToList();
var questionIds = answers.GroupBy(m => m.Question.Id).Select(m => m.Key).ToList();
foreach(var questionId in questionIds)
{
var questionAnswers = answers.Where(m => m.Question.Id == questionId).ToList();
if (!questionAnswers.Any()) continue;
var highestPriority = questionAnswers.OrderBy(m => m.Priority).First().Priority;
var chosenQuestionAnswers = answers.Where(m => m.Active).ToList();
var count = chosenQuestionAnswers.Count;
var ordered = questionAnswers.OrderBy(a => 1);
switch (count)
{
case 1:
var choseHighest = chosenQuestionAnswers.SingleOrDefault(m => m.Priority.Equals(highestPriority)) != null;
ordered = choseHighest ? ordered.OrderBy(m => m.Priority) : ordered.OrderByDescending(m => m.Priority);
break;
default:
ordered = ordered.ThenByDescending(m => m.Active).ThenByDescending(m => m.Priority);
break;
}
var questionAnswerIds = ordered.Select(m => m.Id).ToList();
sortedAnswers = sortedAnswers.ThenBy(m => questionAnswerIds.IndexOf(m.Id));
}
return sortedAnswers.ToList();
}
If I put a breakpoint on sortedAnswers = sortedAnswers.ThenBy(m => questionAnswerIds.IndexOf(m.Id)); I can see that my sort is working correctly, because the answer ids are sorted. But when it executes the line with the breakpoint, nothing changes.
Can someone help me figure this out?

Unless your breakpoint is after the ToList() then you won't see a change. The OrderBy/ThenBy methods are implemented using deferred execution. Until you start enumerating the ThenBy query (i.e. using a foreach or ToList/ToArray) you won't see any changes.
sortedAnswers = sortedAnswers
.ThenBy(m => questionAnswerIds.IndexOf(m.Id))
.ToList(); // put your break point after this line

I solved this, but I think it was actually an issue with my logic rather than anything else. I changed my method to this:
public IList<AnswerRequestModel> SortAnswersByPriority(IList<AnswerRequestModel> answers)
{
if (!answers.Any()) return answers;
var chosenAnswers = answers.Where(m => m.Active).ToList();
// If we have no chosen answers, then just do a default sort by priority
if (!chosenAnswers.Any()) return answers.OrderBy(m => m.Question.Priority).ThenBy(m => m.Priority).ToList();
var sortedAnswers = answers.OrderBy(a => 1);
var questionIds = answers.GroupBy(m => m.Question.Id).Select(m => m.Key).ToList();
foreach(var questionId in questionIds)
{
var questionAnswers = answers.Where(m => m.Question.Id == questionId).ToList();
if (!questionAnswers.Any()) continue;
var lowestPriority = questionAnswers.OrderByDescending(m => m.Priority).First().Priority;
var chosenQuestionAnswers = answers.Where(m => m.Active).ToList();
var count = chosenQuestionAnswers.Count;
var ordered = questionAnswers.OrderBy(a => 1);
// Sort by our chosen answers first, then by answer priority
if (chosenQuestionAnswers.Any(m => m.Priority.Equals(lowestPriority)))
{
switch (count)
{
case 1:
ordered = ordered.OrderByDescending(m => m.Priority);
break;
default:
ordered = ordered.OrderByDescending(m => m.Active).ThenByDescending(m => m.Priority);
break;
}
} else
{
ordered = ordered.OrderByDescending(m => m.Active).ThenBy(m => m.Priority);
}
var questionAnswerIds = ordered.Select(m => m.Id).ToList();
sortedAnswers = sortedAnswers.ThenBy(m => questionAnswerIds.IndexOf(m.Id));
}
// Once we have sorted by our answer priority, do a final sort on question priority and return the list
return sortedAnswers.OrderBy(m => m.Question.Priority).ToList();
}
and in answer to #mjwills, the code I supplied should have been enough for you to run locally. If you created a model AnswerRequestModel and a the SortAnswersByPriority method and passed in the list I used in my example, you should be able to execute it without issue.
I could have supplied my unit test:
[Test]
public void ShouldSortOnMultipleQuestionsWithOneChosenAnswerPerQuestion()
{
// Assemble
var services = SortContext.GivenServices();
var sortProvider = services.WhenCreateSortProvider();
var answers = new List<AnswerRequestModel>
{
new AnswerRequestModel
{
Id = 1,
Priority = 0,
Question = new QuestionRequestModel { Type = QuestionType.Two },
Text = "Very high",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Very high", Operator = "=", Field = "quality"} }
},
new AnswerRequestModel
{
Id = 2,
Priority = 1,
Question = new QuestionRequestModel { Type = QuestionType.Two },
Text = "High",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "High", Operator = "=", Field = "quality"} }
},
new AnswerRequestModel
{
Id = 3,
Priority = 2,
Question = new QuestionRequestModel { Type = QuestionType.Two },
Text = "Medium",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Medium", Operator = "=", Field = "quality"} }
},
new AnswerRequestModel
{
Id = 4,
Priority = 3,
Question = new QuestionRequestModel { Type = QuestionType.Two },
Text = "Low",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Low", Operator = "=", Field = "quality"} }
},
new AnswerRequestModel
{
Id = 5,
Priority = 0,
Question = new QuestionRequestModel { Type = QuestionType.Two, Priority = 1},
Text = "Blacks",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Blacks", Operator = "=", Field = "colour"} }
},
new AnswerRequestModel
{
Id = 6,
Priority = 1,
Question = new QuestionRequestModel { Type = QuestionType.Two, Priority = 1 },
Text = "Silvers",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Silvers", Operator = "=", Field = "colour" } }
},
new AnswerRequestModel
{
Id = 7,
Priority = 2,
Question = new QuestionRequestModel { Type = QuestionType.Two, Priority = 1 },
Text = "Reds",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Blues", Operator = "=", Field = "colour" } }
},
new AnswerRequestModel
{
Id = 8,
Priority = 3,
Question = new QuestionRequestModel { Type = QuestionType.Two, Priority = 1 },
Text = "Yellows",
Formulas = new List<AnswerFormula> { new AnswerFormula { Expression = "Yellows", Operator = "=", Field = "colour" } }
}
};
answers[1].Active = true;
answers[6].Active = true;
// Act
var sortedAnswers = sortProvider.SortAnswersByPriority(answers);
var firstAnswer = sortedAnswers[0];
var secondAnswer = sortedAnswers[1];
var thirdAnswer = sortedAnswers[2];
var forthAnswer = sortedAnswers[3];
var fifthAnswer = sortedAnswers[4];
var sixthAnswer = sortedAnswers[5];
var seventhAnswer = sortedAnswers[6];
var eigthAnswer = sortedAnswers[7];
// Assert
firstAnswer.Text.Should().Be("High");
secondAnswer.Text.Should().Be("Very high");
thirdAnswer.Text.Should().Be("Medium");
forthAnswer.Text.Should().Be("Low");
fifthAnswer.Text.Should().Be("Reds");
sixthAnswer.Text.Should().Be("Blacks");
seventhAnswer.Text.Should().Be("Silvers");
eigthAnswer.Text.Should().Be("Yellows");
}

c# Linq List add entry

I have this C# LINQ
List<RateRecord> ls = occupancyList.Where(s => s.publish_flag.Contains("0020")).Select(x => new RateRecord()
{
RATECODE = x.rate_code.Trim(),
Occ = new List<RateRecordDtl>()
{
new RateRecordDtl { date = dateFromShort, pricing = new List<Pricing>() {new Pricing {adults = 2, price = x.rate }}
}
}
).ToList();
I want to add to the List a second Pricing object {adults = 1, price = x.rate }
How can I achieve that?

Add a comma and another Pricing object:
List<RateRecord> ls = occupancyList.Where(s => s.publish_flag.Contains("0020")).Select(x => new RateRecord()
{
RATECODE = x.rate_code.Trim(),
Occ = new List<RateRecordDtl>()
{
new RateRecordDtl { date = dateFromShort, pricing = new List<Pricing>() {
new Pricing {adults = 2, price = x.rate },
new Pricing {adults = 1, price = x.rate }}
}
}
).ToList();

ComboBox data types supported

Can I set the data type for a Value of a ComboBox?
I'm have a long list of keyCodes I want to use in the RegisterHotKey() function, which takes an uint VK data type.
RegisterHotKey(_hWnd, 1, (uint)fsModifiers.Control, (uint)Keys.Insert);
I set my combobox value as "(uint)Keys.Insert". Then I assign the value to a string variable and try to use the variable cast as (uint) in the RegisterHotKey function but I keep getting data type errors.
Either I'm not casting right or this can't be done?
Thanks...
cboHotkeyModifier.ValueMember = "Value";
cboHotkeyModifier.DisplayMember = "Text";
items = new[] {
new { Value = "", Text = "" },
new { Value = "Shift", Text = "Shift" },
new { Value = "(uint)fsModifiers.Control", Text = "Control" },
new { Value = "Alt", Text = "Alt" }
};
cboHotkey.ValueMember = "Value";
cboHotkey.DisplayMember = "Text";
items = new[] {
new { Value = "D0", Text = "0" },
new { Value = "D1", Text = "1" },
new { Value = "D2", Text = "2" },
new { Value = "D3", Text = "3" },
new { Value = "D4", Text = "4" },
};
cboHotkey.DataSource = items;
keyData = cboHotkey.SelectedItem;
keyModifier = cboHotkeyModifier.SelectedItem;
RegisterHotKey(_hWnd, 1, keyModifer, keyCode);

dotnet highchar data points are not coming with every record

In a MVC application I am using using Dotnet HighCharts. I m able to render chart in page but as being my newbie one thing is not as expected. I m not getting data points (small pop-up boxes to give details about a point in graph). The data I m passing to chart is consist of 5000 records but I m not getting data point with every point. Here is display of my graph:
At HighChart site this is a demo of same kind, showing data points with every record.
My code is below, can you please help and guide me. I highly appriciate your time, sharing and help.
Thanks in anticipation.
Below code generates chart:
private Highcharts GetChart(List<CurrencyConversion> conversions, DateTime dateFrom, DateTime dateTo)
{
Highcharts chart = null;
string currencyFrom, currencyTo;
if (conversions != null && conversions.Count() > 0)
{
object[][] data = conversions.Select(c => new object[] { c.LastUpdatedDate, c.Rate }).ToArray();
currencyFrom = conversions.Select(c => c.CurrencyFrom).FirstOrDefault();
currencyTo = conversions.Select(c => c.CurrencyTo).FirstOrDefault();
chart = new Highcharts("chart")
.SetOptions(new GlobalOptions { Global = new Global { UseUTC = false } })
.InitChart(new Chart { ZoomType = ZoomTypes.X, SpacingRight = 20 })
.SetTitle(new Title { Text = "" })
.SetSubtitle(new Subtitle { Text = "Click and drag in the plot area to zoom in" })
.SetXAxis(new XAxis
{
Type = AxisTypes.Datetime,
MinRange = 3600000,
Title = new XAxisTitle { Text = "" }
})
.SetYAxis(new YAxis
{
Title = new YAxisTitle { Text = "Exchange rate" },
StartOnTick = false,
EndOnTick = false,
Min = 0.1
})
.SetTooltip(new Tooltip { Shared = true })
.SetLegend(new Legend { Enabled = false })
.SetPlotOptions(new PlotOptions
{
Area = new PlotOptionsArea
{
FillColor = new BackColorOrGradient(new Gradient
{
LinearGradient = new[] { 0, 0, 0, 300 },
Stops = new object[,] { { 0, "rgb(116, 116, 116)" }, { 1, Color.LightSkyBlue } }
}),
LineWidth = 1,
Marker = new PlotOptionsAreaMarker
{
Enabled = false,
States = new PlotOptionsAreaMarkerStates
{
Hover = new PlotOptionsAreaMarkerStatesHover
{
Enabled = true,
Radius = 5
}
}
},
Shadow = false,
States = new PlotOptionsAreaStates { Hover = new PlotOptionsAreaStatesHover { LineWidth = 1 } },
PointInterval = 24 * 3600 * 1000,
AllowPointSelect = true, CropThreshold=10
//PointStart = new PointStart(startDate)
}
})
.SetSeries(new Series
{
Type = ChartTypes.Area,
Name = string.Format("{0} to {1}", currencyFrom, currencyTo), //graphHeading,
Data = new Data(data),
});
}
return chart;
}

In case when you use highstock.js (from screenshot I notice a piece of navigator) then dataGroping is enabled, defaulty. So in case when you disable it, all points will be printed.
http://api.highcharts.com/highstock#plotOptions.series.dataGrouping.enabled