C# For Each（开发人员如何使用它）

    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;

            // Create a list of integers
            List numbers = new List { 1, 2, 3, 4, 5 };

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

            // Iterate through the list using for each 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

			' Create a list of integers
			Private numbers As New List From {1, 2, 3, 4, 5}

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

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

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

    The sum of the elements is: 15

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'The sum @of the elements is: 15

    foreach (var number in numbers)
    {
        Console.WriteLine(number);
    }

For Each number In numbers
		Console.WriteLine(number)
Next number

    Dictionary ageDictionary = new Dictionary
    {
        { "Alice", 30 },
        { "Bob", 25 },
        { "Charlie", 22 }
    };

    foreach (KeyValuePair entry in ageDictionary)
    {
        Console.WriteLine($"{entry.Key} is {entry.Value} years old.");
    }

Dim ageDictionary As New Dictionary From {
	{ "Alice", 30 },
	{ "Bob", 25 },
	{ "Charlie", 22 }
}

	For Each entry As KeyValuePair In ageDictionary
		Console.WriteLine($"{entry.Key} is {entry.Value} years old.")
	Next entry

    using System;
    using System.Collections.Generic;
    using System.Linq;
            List numbers = new List { 1, 2, 3, 4, 5 };

            // Use LINQ to filter out even numbers
            var evenNumbers = numbers.Where(n => n % 2 == 0);

            // Iterate through the even numbers using for each loop
            foreach (var number in evenNumbers)
            {
                Console.WriteLine(number);
            }

Imports System
	Imports System.Collections.Generic
	Imports System.Linq
			Private numbers As New List From {1, 2, 3, 4, 5}

			' Use LINQ to filter out even numbers
			Private evenNumbers = numbers.Where(Function(n) n Mod 2 = 0)

			' Iterate through the even numbers using for each loop
			For Each number In evenNumbers
				Console.WriteLine(number)
			Next number

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

Dim products As New List 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;

    // Create a list of products
    List products = new List
    {
        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 = "Product ReportNamePrice";

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

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

    // 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

	' Create a list of products
	Private products As New List 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
	Private htmlReport As String = "Product ReportNamePrice"

	' Iterate through the list of products using for each loop
	For Each product In products
		' Add product information to the HTML report
		htmlReport &= $"{product.Name}${product.Price}"
	Next product

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

	' 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.")