C# 隨機整數（對於開發者的運行原理）

// Create an instance of Random
Random random = new Random();
// Generate a random integer
int randomNumber = random.Next();

' Create an instance of Random
Dim random As New Random()
' Generate a random integer
Dim randomNumber As Integer = random.Next()

// Create an instance of Random
Random rnd = new Random();
// Generate a random integer value between 1 and 100
int randomNumberInRange = rnd.Next(1, 101);

' Create an instance of Random
Dim rnd As New Random()
' Generate a random integer value between 1 and 100
Dim randomNumberInRange As Integer = rnd.Next(1, 101)

// Create an instance of Random
Random random = new Random();
// Generate a random number between 0 and 99
int randomNumberLessThanMax = random.Next(100);

' Create an instance of Random
Dim random As New Random()
' Generate a random number between 0 and 99
Dim randomNumberLessThanMax As Integer = random.Next(100)

// Create an instance of Random
Random random = new Random();
// Create a byte array
byte[] randomBytes = new byte[10];
// Fill the array with random byte values
random.NextBytes(randomBytes);

' Create an instance of Random
Dim random As New Random()
' Create a byte array
Dim randomBytes(9) As Byte
' Fill the array with random byte values
random.NextBytes(randomBytes)

// Initialize Random with a seed value
Random random = new Random(12345);
// Generate a random integer
int randomNumberWithSeed = random.Next();

' Initialize Random with a seed value
Dim random As New Random(12345)
' Generate a random integer
Dim randomNumberWithSeed As Integer = random.Next()

// Create a thread-local Random instance
ThreadLocal<Random> threadLocalRandom = new ThreadLocal<Random>(() => new Random());
// Generate a random number safely in a multi-threaded environment
int randomNumberThreadSafe = threadLocalRandom.Value.Next();

' Create a thread-local Random instance
Dim threadLocalRandom As New ThreadLocal(Of Random)(Function() New Random())
' Generate a random number safely in a multi-threaded environment
Dim randomNumberThreadSafe As Integer = threadLocalRandom.Value.Next()

// Example of generating random numbers with a Gaussian distribution using MathNet.Numerics
using MathNet.Numerics.Distributions;

// Parameters for the Gaussian distribution: mean and standard deviation
double mean = 0;
double standardDeviation = 1;

// Generate a random number with a Gaussian distribution
double randomNumberWithGaussianDistribution = Normal.Sample(new Random(), mean, standardDeviation);

' Example of generating random numbers with a Gaussian distribution using MathNet.Numerics
Imports MathNet.Numerics.Distributions

' Parameters for the Gaussian distribution: mean and standard deviation
Private mean As Double = 0
Private standardDeviation As Double = 1

' Generate a random number with a Gaussian distribution
Private randomNumberWithGaussianDistribution As Double = Normal.Sample(New Random(), mean, standardDeviation)

using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        // Create a ChromePdfRenderer instance
        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)
		' Create a ChromePdfRenderer instance
		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

using IronPdf;
using System;

class Program
{
    static void Main(string[] args)
    {
        // Create a new instance of Random
        Random random = new Random();
        // Generate a random integer between 1 and 100
        int randomNumber = random.Next(1, 101);

        // Create HTML content with the random integer
        string htmlContent = $@"
            <html>
            <head><title>Random Integer PDF</title></head>
            <body>
            <h1>Random Integer: {randomNumber}</h1>
            </body>
            </html>";

        // Create a new HtmlToPdf renderer
        var renderer = new HtmlToPdf();
        // Render the HTML to a PDF
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        // Save the PDF document
        pdf.SaveAs("output.pdf");
    }
}

Imports IronPdf
Imports System

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Create a new instance of Random
		Dim random As New Random()
		' Generate a random integer between 1 and 100
		Dim randomNumber As Integer = random.Next(1, 101)

		' Create HTML content with the random integer
		Dim htmlContent As String = $"
            <html>
            <head><title>Random Integer PDF</title></head>
            <body>
            <h1>Random Integer: {randomNumber}</h1>
            </body>
            </html>"

		' Create a new HtmlToPdf renderer
		Dim renderer = New HtmlToPdf()
		' Render the HTML to a PDF
		Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
		' Save the PDF document
		pdf.SaveAs("output.pdf")
	End Sub
End Class