C# 反转字符串（开发者如何使用）

public class Program
{
// static void main
    public static void Main()
    {
        string original = "AwesomeIronPDF"; // string variable
    char[] charArray = original.ToCharArray();
    Array.Reverse(charArray);// static string reverse method 
    string reversed = new string(charArray); // reversed string
    Console.WriteLine(reversed); // Output: FDPnorIemosewA
    }
}

Public Class Program
' static void main
	Public Shared Sub Main()
		Dim original As String = "AwesomeIronPDF" ' string variable
	Dim charArray() As Char = original.ToCharArray()
	Array.Reverse(charArray) ' static string reverse method
	Dim reversed As New String(charArray) ' reversed string
	Console.WriteLine(reversed) ' Output: FDPnorIemosewA
	End Sub
End Class

public class Program
{
    public static void Main()
    {
        string someText = "AwesomeIronPDF"; // string variable
        StringBuilder sb = new StringBuilder();
        for (int i = someText.Length - 1; i >= 0; i--)
        {
            sb.Append(someText[i]);
        }
        string reversed = sb.ToString(); // reversed string variable
        Console.WriteLine(reversed); // Output: FDPnorIemosewA
    }
}

Public Class Program
	Public Shared Sub Main()
		Dim someText As String = "AwesomeIronPDF" ' string variable
		Dim sb As New StringBuilder()
		For i As Integer = someText.Length - 1 To 0 Step -1
			sb.Append(someText.Chars(i))
		Next i
		Dim reversed As String = sb.ToString() ' reversed string variable
		Console.WriteLine(reversed) ' Output: FDPnorIemosewA
	End Sub
End Class

public class Program
{
    public static void Main()
    {
        string someText = "AwesomeIronPDF"; // random string
        string reversed = ReverseString(someText); // reverse a string
        Console.WriteLine(reversed); // Output: FDPnorIemosewA
    }
    // public static string reverse method
    public static string ReverseString(string str) 
    {
        if (str.Length <= 1)
            return str;
        return ReverseString(str.Substring(1)) + str[0];
    }
}

Public Class Program
	Public Shared Sub Main()
		Dim someText As String = "AwesomeIronPDF" ' random string
		Dim reversed As String = ReverseString(someText) ' reverse a string
		Console.WriteLine(reversed) ' Output: FDPnorIemosewA
	End Sub
	' public static string reverse method
	Public Shared Function ReverseString(ByVal str As String) As String
		If str.Length <= 1 Then
			Return str
		End If
		Return ReverseString(str.Substring(1)) + str.Chars(0)
	End Function
End Class

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 Program
{
    public static void Main()
    {
        var content = "<h1>Demonstrate IronPDF with C# LinkedList</h1>";
        content += "<h2>1. Using Array.Reverse Method</h2>";
        string someText = "AwesomeIronPDF"; // new string variable
        content += $"<p>Input String: {original}</p>";
        char[] charArray = someText.ToCharArray();
        Array.Reverse(charArray);// static string reverse method 
        string reversed1 = new string(charArray); // reversed string
        Console.WriteLine(reversed1); // Output: FDPnorIemosewA
        content += $"<p>output: {reversed1}</p>";
        content += "<h2>2. Using StringBuilder</h2>";
        StringBuilder sb = new StringBuilder();
        content += $"<p>Input String: {original}</p>";
        for (int i = someText.Length - 1; i >= 0; i--)
        {
            sb.Append(original[i]);
        }
        string reversed2 = sb.ToString();
        content += $"<p>output: {reversed2}</p>";
        content += "<h2>3. Using Recursive Approach</h2>";
        content += $"<p>Input String: {someText}</p>";
        string reversed3 = ReverseString(someText);
        Console.WriteLine(reversed3); // Output: FDPnorIemosewA
        content += $"<p>output: {reversed3}</p>";
        // create Renderer
        var renderer = new ChromePdfRenderer();
        // Create a PDF from HTML string
        var pdf = renderer.RenderHtmlAsPdf(content);
        // Save to a file or Stream
        pdf.SaveAs("reverseString.pdf");
    }
    public static string ReverseString(string str)
    {
        if (str.Length <= 1)
            return str;
        return ReverseString(str.Substring(1)) + str[0];
    }    
}

Public Class Program
	Public Shared Sub Main()
		Dim content = "<h1>Demonstrate IronPDF with C# LinkedList</h1>"
		content &= "<h2>1. Using Array.Reverse Method</h2>"
		Dim someText As String = "AwesomeIronPDF" ' new string variable
		content &= $"<p>Input String: {original}</p>"
		Dim charArray() As Char = someText.ToCharArray()
		Array.Reverse(charArray) ' static string reverse method
		Dim reversed1 As New String(charArray) ' reversed string
		Console.WriteLine(reversed1) ' Output: FDPnorIemosewA
		content &= $"<p>output: {reversed1}</p>"
		content &= "<h2>2. Using StringBuilder</h2>"
		Dim sb As New StringBuilder()
		content &= $"<p>Input String: {original}</p>"
		For i As Integer = someText.Length - 1 To 0 Step -1
			sb.Append(original(i))
		Next i
		Dim reversed2 As String = sb.ToString()
		content &= $"<p>output: {reversed2}</p>"
		content &= "<h2>3. Using Recursive Approach</h2>"
		content &= $"<p>Input String: {someText}</p>"
		Dim reversed3 As String = ReverseString(someText)
		Console.WriteLine(reversed3) ' Output: FDPnorIemosewA
		content &= $"<p>output: {reversed3}</p>"
		' create Renderer
		Dim renderer = New ChromePdfRenderer()
		' Create a PDF from HTML string
		Dim pdf = renderer.RenderHtmlAsPdf(content)
		' Save to a file or Stream
		pdf.SaveAs("reverseString.pdf")
	End Sub
	Public Shared Function ReverseString(ByVal str As String) As String
		If str.Length <= 1 Then
			Return str
		End If
		Return ReverseString(str.Substring(1)) + str.Chars(0)
	End Function
End Class