C# String.Join（它如何为开发人员工作）

public static string Join(string separator, params string [] value);
public static string Join(string separator, IEnumerable<string> values);
public static string Join<T>(string separator, IEnumerable<T> values);
public static string Join(string separator, params object [] values);
public static string Join(string separator, string [] value, int startIndex, int count);

public static String Join(String separator, params String () value)
public static String Join(String separator, IEnumerable(Of String) values)
public static String Join(Of T)(String separator, IEnumerable(Of T) values)
public static String Join(String separator, params Object () values)
public static String Join(String separator, String () value, Integer startIndex, Integer count)

public static void Main()
{
    string [] array = new string [] { "apple", "banana", "cherry" };
    string result = String.Join(", ", array);
    Console.WriteLine(result);
}

Public Shared Sub Main()
	Dim array() As String = { "apple", "banana", "cherry" }
	Dim result As String = String.Join(", ", array)
	Console.WriteLine(result)
End Sub

apple, banana, cherry

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'apple, banana, cherry

public static void Main()
{
    int [] numbers = new int [] { 1, 2, 3 };
    string result = String.Join(", ", numbers);
    Console.WriteLine(result);
}

Public Shared Sub Main()
	Dim numbers() As Integer = { 1, 2, 3 }
	Dim result As String = String.Join(", ", numbers)
	Console.WriteLine(result)
End Sub

1, 2, 3

'INSTANT VB TODO TASK: The following line uses invalid syntax:
'1, 2, 3

string concatenatedString = String.Concat("Hello", " ", "World");
// Output: "Hello World"

Dim concatenatedString As String = String.Concat("Hello", " ", "World")
' Output: "Hello World"

string [] words = "Hello World from C#".Split(' ');
// Output: ["Hello", "World", "from", "C#"]

Dim words() As String = "Hello World from C#".Split(" "c)
' Output: ["Hello", "World", "from", "C#"]

string replacedString = "Hello World".Replace("World", "C#");
// Output: "Hello C#"

Dim replacedString As String = "Hello World".Replace("World", "C#")
' Output: "Hello C#"

string trimmedString = " Hello World ".Trim();
// Output: "Hello World"

Dim trimmedString As String = " Hello World ".Trim()
' Output: "Hello World"

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

using IronPdf;
public class PdfGenerationExample
{
    public static void Main()
    {
        License.LicenseKey = "License-Key";
        // Array of strings representing HTML paragraphs
        string [] htmlParagraphs = new string []
        {
            "<p>This is the first paragraph.</p>",
            "<p>This is the second paragraph.</p>",
            "<p>This is the third paragraph.</p>"
        };
        // Using String.Join to concatenate HTML paragraphs with a newline as separator
        string htmlContent = String.Join("\n", htmlParagraphs);
        // Initialize the HTML to PDF converter
        var renderer = new ChromePdfRenderer();
        // Convert the HTML string to a PDF document
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        // Save the PDF to a file
        pdf.SaveAs("Example.pdf");
    }
}

Imports Microsoft.VisualBasic
Imports IronPdf
Public Class PdfGenerationExample
	Public Shared Sub Main()
		License.LicenseKey = "License-Key"
		' Array of strings representing HTML paragraphs
		Dim htmlParagraphs() As String = { "<p>This is the first paragraph.</p>", "<p>This is the second paragraph.</p>", "<p>This is the third paragraph.</p>" }
		' Using String.Join to concatenate HTML paragraphs with a newline as separator
		Dim htmlContent As String = String.Join(vbLf, htmlParagraphs)
		' Initialize the HTML to PDF converter
		Dim renderer = New ChromePdfRenderer()
		' Convert the HTML string to a PDF document
		Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
		' Save the PDF to a file
		pdf.SaveAs("Example.pdf")
	End Sub
End Class