C# TryParse (Funktionsweise für Entwickler)

How to Use C# TryParse

1. Install the IronPDF NuGet Package.
2. Create a PDF Document.
3. Define a String for Input.
4. Use TryParse to Validate Input.
5. Check Parse Result.
6. Add Content to PDF.
7. Save the PDF Document.

Understanding the TryParse Method

A static method in C#, the TryParse method can be used with numeric data types as well as string representations such as other relevant kinds. It endeavors to transform a value's string representation into a representation of a number or corresponding numeric or other data type, and if the conversion succeeded, it will return a Boolean value.

As an illustration, consider the signature of the TryParse method for parsing integers:

public static bool TryParse(string s, out int result);

public static bool TryParse(string s, out int result);

IRON VB CONVERTER ERROR developers@ironsoftware.com

The two parameters required by the procedure are the string to be converted (s) and the output parameter (result), which stores the parsed string value if the conversion is successful. If the conversion is successful, it returns true; if not, it returns false.

string numberStr = "123";
int number;
if (int.TryParse(numberStr, out number))
{
    Console.WriteLine("Parsed number: " + number);
}
else
{
    Console.WriteLine("Invalid number format");
}

string numberStr = "123";
int number;
if (int.TryParse(numberStr, out number))
{
    Console.WriteLine("Parsed number: " + number);
}
else
{
    Console.WriteLine("Invalid number format");
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

What is IronPDF?

Programmers may create, edit, and render PDF documents inside of .NET programs with the help of the C# library IronPDF. Working with PDF files is easy thanks to its extensive feature set. You can split, merge, and edit pre-existing PDF documents. You can produce PDF documents in HTML, images, and other formats. You can annotate PDFs with text, images, and other data.

IronPDF’s core feature is converting HTML to PDF, ensuring that layouts and styles remain as they were. It excels at generating PDFs from web content, whether for reports, invoices, or documentation. HTML files, URLs, and HTML strings can be converted into PDF files.

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");
    }
}

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

Create a New Visual Studio Project

Installing IronPDF

The Visual Command-Line interface may be found in the Visual Studio Tools under Tools. Choose NuGet's Package Manager. You need to enter the following command in the package management terminal tab.

Install-Package IronPdf

Another option is to make use of Package Manager. Using the NuGet Package Manager option, the package may be installed straight into the solution. To find packages, use the search box on the NuGet website. How simple it is to search for "IronPDF" in the package manager is demonstrated by the following example screenshot that follows:

The picture above shows the list of pertinent search results. Please make these changes in order to allow the software to be installed on your computer.

It is now possible for us to utilize the package in the current project after downloading and installing it.

using IronPdf;
using System;

class Program
{
    static void Main(string[] args)
    {
        // Prompt the user for input
        Console.WriteLine("Enter a number:");
        // Read user input as a string
        string userInput = Console.ReadLine();
        // Attempt to parse the input as an integer
        if (int.TryParse(userInput, out int parsedNumber))
        {
            // If parsing succeeds, create a PDF document
            var pdf = new HtmlToPdf();
            // Generate HTML content with the parsed number
            string htmlContent = $"<h1>User's Number: {parsedNumber}</h1>";
            // Convert HTML to PDF
            var pdfDoc = pdf.RenderHtmlAsPdf(htmlContent);
            // Save the PDF document to a file
            pdfDoc.SaveAs("parsed_number.pdf");
            Console.WriteLine("PDF generated successfully.");
        }
        else
        {
            // If parsing fails, display an error message
            Console.WriteLine("Invalid number format. Please enter a valid integer.");
        }
    }
}

using IronPdf;
using System;

class Program
{
    static void Main(string[] args)
    {
        // Prompt the user for input
        Console.WriteLine("Enter a number:");
        // Read user input as a string
        string userInput = Console.ReadLine();
        // Attempt to parse the input as an integer
        if (int.TryParse(userInput, out int parsedNumber))
        {
            // If parsing succeeds, create a PDF document
            var pdf = new HtmlToPdf();
            // Generate HTML content with the parsed number
            string htmlContent = $"<h1>User's Number: {parsedNumber}</h1>";
            // Convert HTML to PDF
            var pdfDoc = pdf.RenderHtmlAsPdf(htmlContent);
            // Save the PDF document to a file
            pdfDoc.SaveAs("parsed_number.pdf");
            Console.WriteLine("PDF generated successfully.");
        }
        else
        {
            // If parsing fails, display an error message
            Console.WriteLine("Invalid number format. Please enter a valid integer.");
        }
    }
}

Imports IronPdf
Imports System

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Prompt the user for input
		Console.WriteLine("Enter a number:")
		' Read user input as a string
		Dim userInput As String = Console.ReadLine()
		' Attempt to parse the input as an integer
		Dim parsedNumber As Integer
		If Integer.TryParse(userInput, parsedNumber) Then
			' If parsing succeeds, create a PDF document
			Dim pdf = New HtmlToPdf()
			' Generate HTML content with the parsed number
			Dim htmlContent As String = $"<h1>User's Number: {parsedNumber}</h1>"
			' Convert HTML to PDF
			Dim pdfDoc = pdf.RenderHtmlAsPdf(htmlContent)
			' Save the PDF document to a file
			pdfDoc.SaveAs("parsed_number.pdf")
			Console.WriteLine("PDF generated successfully.")
		Else
			' If parsing fails, display an error message
			Console.WriteLine("Invalid number format. Please enter a valid integer.")
		End If
	End Sub
End Class

Conclusion

To sum up, the combination of IronPDF with C#'s TryParse function provides a strong option for effective data conversion and dynamic PDF creation in C# programs. Developers can safely parse user input and external data by using TryParse, which guarantees robustness and dependability while processing numerical numbers.

Developers can easily integrate parsed data into dynamic PDF publications, including reports, invoices, or personalized documents, by combining IronPDF's flexible PDF production features. With this integration, developers may construct feature-rich applications that cater to a wide range of user needs more efficiently and productively. With the help of TryParse and IronPDF, you can create dynamic PDF content, parse user input, analyze other data sources, and create more complex and captivating C# applications.

Finally, by adding IronPDF and the Iron Software's Flexible Library Suite, which has a starting price of $799, seamlessly integrates Iron Software's flexible suite with its performance, compatibility, and ease of use to provide more efficient development and expanded application capabilities.

There are well-defined license alternatives that are customized to the specific requirements of the project, developers can select the ideal model with certainty. Developers can overcome a range of obstacles with efficiency and transparency thanks to these benefits.