C# 集合（开发人员如何使用）

List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };
numbers.Add(6); // adds element '6' to the end
numbers.Remove(3); // removes all the items that are '3'

Dim numbers As New List(Of Integer) From {1, 2, 3, 4, 5}
numbers.Add(6) ' adds element '6' to the end
numbers.Remove(3) ' removes all the items that are '3'

Dictionary<string, int> ageMap = new Dictionary<string, int>();
ageMap.Add("John", 25); // the string "John" is the key that can access the value 25
ageMap["Jane"] = 30; // setting the key "Jane" to hold the value 30

Dim ageMap As New Dictionary(Of String, Integer)()
ageMap.Add("John", 25) ' the string "John" is the key that can access the value 25
ageMap("Jane") = 30 ' setting the key "Jane" to hold the value 30

Queue<string> tasks = new Queue<string>(); // creating a queue class
tasks.Enqueue("Task 1"); // adding to the queue
tasks.Enqueue("Task 2");
Stack<double> numbers = new Stack<double>(); // creating a stack class
numbers.Push(3.14); // adding to the stack
numbers.Push(2.71);

Dim tasks As New Queue(Of String)() ' creating a queue class
tasks.Enqueue("Task 1") ' adding to the queue
tasks.Enqueue("Task 2")
Dim numbers As New Stack(Of Double)() ' creating a stack class
numbers.Push(3.14) ' adding to the stack
numbers.Push(2.71)

HashSet<int> setA = new HashSet<int> { 1, 2, 3, 4 };
HashSet<int> setB = new HashSet<int> { 3, 4, 5, 6 };
HashSet<int> unionSet = new HashSet<int>(setA);
unionSet.UnionWith(setB); // combining setA and setB

Dim setA As New HashSet(Of Integer) From {1, 2, 3, 4}
Dim setB As New HashSet(Of Integer) From {3, 4, 5, 6}
Dim unionSet As New HashSet(Of Integer)(setA)
unionSet.UnionWith(setB) ' combining setA and setB

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

public class Transaction
{
    public string ProductName { get; set; }
    public decimal Amount { get; set; }
    public DateTime Date { get; set; }
}
List<Transaction> transactions = new List<Transaction>
{
    new Transaction { ProductName = "Product A", Amount = 100.50m, Date = DateTime.Now.AddDays(-2) },
    new Transaction { ProductName = "Product B", Amount = 75.20m, Date = DateTime.Now.AddDays(-1) },
    // Add more transactions as needed
};

Public Class Transaction
	Public Property ProductName() As String
	Public Property Amount() As Decimal
	Public Property [Date]() As DateTime
End Class
Private transactions As New List(Of Transaction) From {
	New Transaction With {
		.ProductName = "Product A",
		.Amount = 100.50D,
		.Date = DateTime.Now.AddDays(-2)
	},
	New Transaction With {
		.ProductName = "Product B",
		.Amount = 75.20D,
		.Date = DateTime.Now.AddDays(-1)
	}
}

var pdfDocument = new IronPdf.HtmlToPdf();
// HTML content with a table populated by data from the 'transactions' list
string htmlContent = "<table><tr><th>Product Name</th><th>Amount</th><th>Date</th></tr>";
foreach (var transaction in transactions)
{
    htmlContent += $"<tr><td>{transaction.ProductName}</td><td>{transaction.Amount}</td><td>{transaction.Date.ToShortDateString()}</td></tr>";
}
htmlContent += "</table>";
// Convert HTML to PDF
PdfDocument pdf =  pdfDocument.RenderHtmlAsPdf(htmlContent);
pdf.SaveAs(pdfFilePath);

Dim pdfDocument = New IronPdf.HtmlToPdf()
' HTML content with a table populated by data from the 'transactions' list
Dim htmlContent As String = "<table><tr><th>Product Name</th><th>Amount</th><th>Date</th></tr>"
For Each transaction In transactions
	htmlContent &= $"<tr><td>{transaction.ProductName}</td><td>{transaction.Amount}</td><td>{transaction.Date.ToShortDateString()}</td></tr>"
Next transaction
htmlContent &= "</table>"
' Convert HTML to PDF
Dim pdf As PdfDocument = pdfDocument.RenderHtmlAsPdf(htmlContent)
pdf.SaveAs(pdfFilePath)