C# For Each（開發者的工作原理）

foreach (variableType variableName in collection)
{
    // Code to execute for each item
}

For Each variableName As variableType In collection
	' Code to execute for each item
Next variableName

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        // Create a list of integers
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };

        // Initialize a variable to store the sum
        int sum = 0;

        // Iterate through the list using foreach loop
        foreach (int number in numbers)
        {
            sum += number;
        }

        // Print the sum
        Console.WriteLine("The sum of the elements is: " + sum);
    }
}

Imports System
Imports System.Collections.Generic

Friend Class Program
	Shared Sub Main()
		' Create a list of integers
		Dim numbers As New List(Of Integer) From {1, 2, 3, 4, 5}

		' Initialize a variable to store the sum
		Dim sum As Integer = 0

		' Iterate through the list using foreach loop
		For Each number As Integer In numbers
			sum += number
		Next number

		' Print the sum
		Console.WriteLine("The sum of the elements is: " & sum)
	End Sub
End Class

public class Product
{
    public string Name { get; set; }
    public decimal Price { get; set; }

    public Product(string name, decimal price)
    {
        Name = name;
        Price = price;
    }
}

Public Class Product
	Public Property Name() As String
	Public Property Price() As Decimal

	Public Sub New(ByVal name As String, ByVal price As Decimal)
		Me.Name = name
		Me.Price = price
	End Sub
End Class

List<Product> products = new List<Product>
{
    new Product("Product A", 29.99m),
    new Product("Product B", 49.99m),
    new Product("Product C", 19.99m),
};

Dim products As New List(Of Product) From {
	New Product("Product A", 29.99D),
	New Product("Product B", 49.99D),
	New Product("Product C", 19.99D)
}

using System;
using System.Collections.Generic;
using IronPdf;

class Program
{
    static void Main()
    {
        // Create a list of products
        List<Product> products = new List<Product>
        {
            new Product("Product A", 29.99m),
            new Product("Product B", 49.99m),
            new Product("Product C", 19.99m),
        };

        // Initialize an HTML string to store the report content
        string htmlReport = "<table><tr><th>Product Name</th><th>Price</th></tr>";

        // Iterate through the list of products using foreach loop
        foreach (var product in products)
        {
            // Add product information to the HTML report
            htmlReport += $"<tr><td>{product.Name}</td><td>${product.Price}</td></tr>";
        }

        // Close the table tag in the HTML report
        htmlReport += "</table>";

        // Create a new instance of the HtmlToPdf class
        var htmlToPdf = new ChromePdfRenderer();

        // Generate the PDF from the HTML report
        var PDF = htmlToPdf.RenderHtmlAsPdf(htmlReport);

        // Save the PDF to a file
        PDF.SaveAs("ProductReport.PDF");

        // Inform the user that the PDF has been generated
        Console.WriteLine("ProductReport.PDF has been generated.");
    }
}

Imports System
Imports System.Collections.Generic
Imports IronPdf

Friend Class Program
	Shared Sub Main()
		' Create a list of products
		Dim products As New List(Of Product) From {
			New Product("Product A", 29.99D),
			New Product("Product B", 49.99D),
			New Product("Product C", 19.99D)
		}

		' Initialize an HTML string to store the report content
		Dim htmlReport As String = "<table><tr><th>Product Name</th><th>Price</th></tr>"

		' Iterate through the list of products using foreach loop
		For Each product In products
			' Add product information to the HTML report
			htmlReport &= $"<tr><td>{product.Name}</td><td>${product.Price}</td></tr>"
		Next product

		' Close the table tag in the HTML report
		htmlReport &= "</table>"

		' Create a new instance of the HtmlToPdf class
		Dim htmlToPdf = New ChromePdfRenderer()

		' Generate the PDF from the HTML report
		Dim PDF = htmlToPdf.RenderHtmlAsPdf(htmlReport)

		' Save the PDF to a file
		PDF.SaveAs("ProductReport.PDF")

		' Inform the user that the PDF has been generated
		Console.WriteLine("ProductReport.PDF has been generated.")
	End Sub
End Class