Math.Round C#（開発者向けの利用方法）

/* methods overloaded by Math.Round
Math.Round(Double)
Math.Round(Double, Int32) // int32 specifies number of fractional digits
Math.Round(Double, Int32, MidpointRounding)  // int32 specifies number of fractional digits, MidpointRounding type of rounding method
Math.Round(Double, MidpointRounding)  // MidpointRounding type of rounding method
Math.Round(Decimal)
Math.Round(Decimal, Int32) // int32 specifies number of fractional digits
Math.Round(Decimal, Int32, MidpointRounding)
Math.Round(Decimal, MidpointRounding)
*/

' methods overloaded by Math.Round
'Math.Round(Double)
'Math.Round(Double, Int32) // int32 specifies number of fractional digits
'Math.Round(Double, Int32, MidpointRounding)  // int32 specifies number of fractional digits, MidpointRounding type of rounding method
'Math.Round(Double, MidpointRounding)  // MidpointRounding type of rounding method
'Math.Round(Decimal)
'Math.Round(Decimal, Int32) // int32 specifies number of fractional digits
'Math.Round(Decimal, Int32, MidpointRounding)
'Math.Round(Decimal, MidpointRounding)
'

double originalValue = 3.75;
double roundedValue = Math.Round(originalValue);
// Output: 4

Dim originalValue As Double = 3.75
Dim roundedValue As Double = Math.Round(originalValue)
' Output: 4

decimal originalValue = 8.625m;
decimal roundedValue = Math.Round(originalValue, 2);
// Output: 8.63

Dim originalValue As Decimal = 8.625D
Dim roundedValue As Decimal = Math.Round(originalValue, 2)
' Output: 8.63

double originalValue = 5.5;
double roundedValueEven = Math.Round(originalValue, MidpointRounding.ToEven);
double roundedValueOdd = Math.Round(originalValue, MidpointRounding.AwayFromZero);
// Output: roundedValueEven = 6, roundedValueOdd = 5

Dim originalValue As Double = 5.5
Dim roundedValueEven As Double = Math.Round(originalValue, MidpointRounding.ToEven)
Dim roundedValueOdd As Double = Math.Round(originalValue, MidpointRounding.AwayFromZero)
' Output: roundedValueEven = 6, roundedValueOdd = 5

decimal originalValue = 9.123456m;
decimal roundedValue = Math.Round(originalValue, 3); // round values
// Output: 9.123

Dim originalValue As Decimal = 9.123456D
Dim roundedValue As Decimal = Math.Round(originalValue, 3) ' round values
' Output: 9.123

decimal [] decimalSampleValues = { 1.15m, 1.25m, 1.35m, 1.45m, 1.55m, 1.65m };
decimal sum = 0;
// Calculate true mean values.
foreach (var value in decimalSampleValues)
{ 
    sum += value; 
}
// print
Console.WriteLine("True mean values:     {0:N2}", sum / decimalSampleValues.Length);
// Calculate mean values with rounding away from zero.
sum = 0;
foreach (var value in decimalSampleValues)
{ 
    sum += Math.Round(value, 1, MidpointRounding.AwayFromZero); 
}
// print
Console.WriteLine("AwayFromZero:  {0:N2}", sum / decimalSampleValues.Length);
// Calculate mean values with rounding to nearest.
sum = 0;
foreach (var value in decimalSampleValues)
{ 
    sum += Math.Round(value, 1, MidpointRounding.ToEven); 
}
// print
Console.WriteLine("ToEven:        {0:N2}", sum / decimalSampleValues.Length);

Dim decimalSampleValues() As Decimal = { 1.15D, 1.25D, 1.35D, 1.45D, 1.55D, 1.65D }
Dim sum As Decimal = 0
' Calculate true mean values.
For Each value In decimalSampleValues
	sum += value
Next value
' print
Console.WriteLine("True mean values:     {0:N2}", sum / decimalSampleValues.Length)
' Calculate mean values with rounding away from zero.
sum = 0
For Each value In decimalSampleValues
	sum += Math.Round(value, 1, MidpointRounding.AwayFromZero)
Next value
' print
Console.WriteLine("AwayFromZero:  {0:N2}", sum / decimalSampleValues.Length)
' Calculate mean values with rounding to nearest.
sum = 0
For Each value In decimalSampleValues
	sum += Math.Round(value, 1, MidpointRounding.ToEven)
Next value
' print
Console.WriteLine("ToEven:        {0:N2}", sum / decimalSampleValues.Length)

double originalValue = 123.456789;
double result = Math.Round(originalValue, 4);
// Output: 123.4568, rounded value

Dim originalValue As Double = 123.456789
Dim result As Double = Math.Round(originalValue, 4)
' Output: 123.4568, rounded value

double originalValue = 7.5;
double roundedValue = Math.Round(originalValue, MidpointRounding.AwayFromZero);
// Output: 8

Dim originalValue As Double = 7.5
Dim roundedValue As Double = Math.Round(originalValue, MidpointRounding.AwayFromZero)
' Output: 8

double interestRate = 0.04567;
double roundedInterest = Math.Round(interestRate, 4); // Round to 4 decimal places

Dim interestRate As Double = 0.04567
Dim roundedInterest As Double = Math.Round(interestRate, 4) ' Round to 4 decimal places

double temperature = 23.678;
double roundedTemperature = Math.Round(temperature, 1); // Round to 1 decimal place

Dim temperature As Double = 23.678
Dim roundedTemperature As Double = Math.Round(temperature, 1) ' Round to 1 decimal place

double meanValue = CalculateMean(data);
double roundedMean = Math.Round(meanValue, 2); // Round mean value to 2 decimal places

Dim meanValue As Double = CalculateMean(data)
Dim roundedMean As Double = Math.Round(meanValue, 2) ' Round mean value to 2 decimal places

double experimentalResult = 9.87654321;
double roundedResult = Math.Round(experimentalResult, 5); // Round to 5 decimal places

Dim experimentalResult As Double = 9.87654321
Dim roundedResult As Double = Math.Round(experimentalResult, 5) ' Round to 5 decimal places

double modelResult = SimulatePhysicalSystem(parameters);
double roundedModelResult = Math.Round(modelResult, 3); // Round to 3 decimal places

Dim modelResult As Double = SimulatePhysicalSystem(parameters)
Dim roundedModelResult As Double = Math.Round(modelResult, 3) ' Round to 3 decimal places

double playerPosition = CalculatePlayerPosition();
double roundedPosition = Math.Round(playerPosition, 2); // Round to 2 decimal places

Dim playerPosition As Double = CalculatePlayerPosition()
Dim roundedPosition As Double = Math.Round(playerPosition, 2) ' Round to 2 decimal places

using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();

        // 1. Convert HTML String to PDF
        var htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>";
        var pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent);
        pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf");

        // 2. Convert HTML File to PDF
        var htmlFilePath = "path_to_your_html_file.html"; // Specify the path to your HTML file
        var pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath);
        pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf");

        // 3. Convert URL to PDF
        var url = "http://ironpdf.com"; // Specify the URL
        var pdfFromUrl = renderer.RenderUrlAsPdf(url);
        pdfFromUrl.SaveAs("URLToPDF.pdf");
    }
}

Imports IronPdf

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		Dim renderer = New ChromePdfRenderer()

		' 1. Convert HTML String to PDF
		Dim htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>"
		Dim pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent)
		pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf")

		' 2. Convert HTML File to PDF
		Dim htmlFilePath = "path_to_your_html_file.html" ' Specify the path to your HTML file
		Dim pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath)
		pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf")

		' 3. Convert URL to PDF
		Dim url = "http://ironpdf.com" ' Specify the URL
		Dim pdfFromUrl = renderer.RenderUrlAsPdf(url)
		pdfFromUrl.SaveAs("URLToPDF.pdf")
	End Sub
End Class

dotnet add package IronPdf

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'dotnet add package IronPdf

Console.WriteLine("Params Example");
List<string> cart = new List<string>();
void AddItems(params string [] items)
{
    for (int i = 0; i < items.Length; i++)
    {
        cart.Add(items [i]);
    }
}
Console.WriteLine("Enter the cart items as comma separated ");
var itemsString = Console.ReadLine();
if (itemsString != null)
{
    var items = itemsString.Split(",").ToArray();
    AddItems(items);
}
AddItems("Sample1", "Sample2");
Console.WriteLine("-------------------------------------------------------");
Console.WriteLine("Display Cart");
string name = "Sam";
var count = cart.Count;
string content = $@"<!DOCTYPE html>
<html>
<body>
<h1>Hello, {name}!</h1>
<p>You have {count} items in the cart.</p>
" +
string.Join("\n", cart.Select(x => $"<p>{x}</p>"))
+ @"
</body>
</html>";
// Create a new PDF document
var pdfDocument = new ChromePdfRenderer();
pdfDocument.RenderHtmlAsPdf(content).SaveAs("cart.pdf");

Imports Microsoft.VisualBasic

Console.WriteLine("Params Example")
Dim cart As New List(Of String)()
'INSTANT VB TODO TASK: Local functions are not converted by Instant VB:
'void AddItems(params string [] items)
'{
'	for (int i = 0; i < items.Length; i++)
'	{
'		cart.Add(items [i]);
'	}
'}
Console.WriteLine("Enter the cart items as comma separated ")
Dim itemsString = Console.ReadLine()
If itemsString IsNot Nothing Then
	Dim items = itemsString.Split(",").ToArray()
	AddItems(items)
End If
AddItems("Sample1", "Sample2")
Console.WriteLine("-------------------------------------------------------")
Console.WriteLine("Display Cart")
Dim name As String = "Sam"
Dim count = cart.Count
Dim content As String = $"<!DOCTYPE html>
<html>
<body>
<h1>Hello, {name}!</h1>
<p>You have {count} items in the cart.</p>
" & String.Join(vbLf, cart.Select(Function(x) $"<p>{x}</p>")) & "
</body>
</html>"
' Create a new PDF document
Dim pdfDocument = New ChromePdfRenderer()
pdfDocument.RenderHtmlAsPdf(content).SaveAs("cart.pdf")

"IronPdf.LicenseKey": "your license key"

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'"IronPdf.LicenseKey": "your license key"