Microsoft Logging C#（对开发者的工作原理）

using Microsoft.Extensions.Logging;

// Inject the logger into the console
ILogger logger = LoggerFactory.Create(builder =>
{
    builder.AddConsole();
}).CreateLogger<Program>();

Imports Microsoft.Extensions.Logging

' Inject the logger into the console
Private logger As ILogger = LoggerFactory.Create(Sub(builder)
	builder.AddConsole()
End Sub).CreateLogger<Program>()

builder.AddConsole(options =>
{
    options.TimestampFormat = "[HH:mm:ss] ";
});

builder.AddConsole(Sub(options)
	options.TimestampFormat = "[HH:mm:ss] "
End Sub)

logger.LogDebug("This is a debug message");
logger.LogInformation("This is an information message");
logger.LogWarning("This is a warning message");
logger.LogError("This is an error message");
logger.LogCritical("This is a critical message");

logger.LogDebug("This is a debug message")
logger.LogInformation("This is an information message")
logger.LogWarning("This is a warning message")
logger.LogError("This is an error message")
logger.LogCritical("This is a critical message")

using Microsoft.Extensions.Logging;
using System;

class Program
{
    // Create a LoggerFactory instance
    private static readonly ILoggerFactory LoggerFactory = LoggerFactory.Create(builder =>
    {
        // Add console logger
        builder.AddConsole();
        // You can add other logging providers here (e.g., AddDebug, AddFile, etc.)
    });

    // Create a logger
    private static readonly ILogger Logger = LoggerFactory.CreateLogger<Program>();

    static void Main(string [] args)
    {
        // Example log messages
        Logger.LogInformation("Information log");
        Logger.LogWarning("Warning log");
        Logger.LogError("Error log");

        try
        {
            // Simulate an exception
            throw new Exception("Exception occurred");
        }
        catch (Exception ex)
        {
            // Log exception details
            Logger.LogError(ex, "Exception log");
        }

        Console.ReadKey();
    }
}

Imports Microsoft.Extensions.Logging
Imports System

Friend Class Program
	' Create a LoggerFactory instance
	Private Shared ReadOnly LoggerFactory As ILoggerFactory = LoggerFactory.Create(Sub(builder)
		' Add console logger
		builder.AddConsole()
		' You can add other logging providers here (e.g., AddDebug, AddFile, etc.)
	End Sub)

	' Create a logger
	Private Shared ReadOnly Logger As ILogger = LoggerFactory.CreateLogger(Of Program)()

	Shared Sub Main(ByVal args() As String)
		' Example log messages
		Logger.LogInformation("Information log")
		Logger.LogWarning("Warning log")
		Logger.LogError("Error log")

		Try
			' Simulate an exception
			Throw New Exception("Exception occurred")
		Catch ex As Exception
			' Log exception details
			Logger.LogError(ex, "Exception log")
		End Try

		Console.ReadKey()
	End Sub
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

using Microsoft.Extensions.Logging;
using IronPdf;

class Program
{
    static void Main(string [] args)
    {
        ILoggerFactory loggerFactory = LoggerFactory.Create(builder =>
        {
            builder
                .AddConsole()
                .AddDebug();
        });

        ILogger<Program> logger = loggerFactory.CreateLogger<Program>();

        // Enable logging in IronPDF
        Logger.Log = new LoggerImplementation(logger);

        // Use IronPDF and perform operations
        // ...

        // Example of logging an error in IronPDF
        Logger.Log.Error("An error occurred while processing the PDF");

        // Example of logging a warning in IronPDF
        Logger.Log.Warning("This is a warning message");

        // Example of logging an information message in IronPDF
        Logger.Log.Information("This is an information message");

        // ...

        // Close and dispose resources
        // ...

        // Flush the log messages
        loggerFactory.Dispose();
    }
}

Imports Microsoft.Extensions.Logging
Imports IronPdf

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		Dim loggerFactory As ILoggerFactory = LoggerFactory.Create(Sub(builder)
			builder.AddConsole().AddDebug()
		End Sub)

		Dim logger As ILogger(Of Program) = loggerFactory.CreateLogger(Of Program)()

		' Enable logging in IronPDF
		Logger.Log = New LoggerImplementation(logger)

		' Use IronPDF and perform operations
		' ...

		' Example of logging an error in IronPDF
		Logger.Log.Error("An error occurred while processing the PDF")

		' Example of logging a warning in IronPDF
		Logger.Log.Warning("This is a warning message")

		' Example of logging an information message in IronPDF
		Logger.Log.Information("This is an information message")

		' ...

		' Close and dispose resources
		' ...

		' Flush the log messages
		loggerFactory.Dispose()
	End Sub
End Class

dotnet add package IronPdf

using Microsoft.Extensions.Logging;
using IronPdf;
using System;

class Program
{
    private static readonly ILoggerFactory LoggerFactory = LoggerFactory.Create(builder =>
    {
        builder.AddConsole(); // Add other logging providers as needed
    });

    private static readonly ILogger Logger = LoggerFactory.CreateLogger<Program>();

    static void Main(string [] args)
    {
        try
        {
            // Your IronPDF code for PDF generation or manipulation
            var Renderer = new IronPdf.HtmlToPdf();
            var PDF = Renderer.RenderHtmlAsPdf("<h1>Hello World!</h1>");
            PDF.SaveAs("Output.pdf");
            Logger.LogInformation("PDF created successfully.");
        }
        catch (Exception ex)
        {
            Logger.LogError(ex, "An error occurred while generating the PDF.");
        }

        Console.ReadKey();
    }
}

Imports Microsoft.Extensions.Logging
Imports IronPdf
Imports System

Friend Class Program
	Private Shared ReadOnly LoggerFactory As ILoggerFactory = LoggerFactory.Create(Sub(builder)
		builder.AddConsole() ' Add other logging providers as needed
	End Sub)

	Private Shared ReadOnly Logger As ILogger = LoggerFactory.CreateLogger(Of Program)()

	Shared Sub Main(ByVal args() As String)
		Try
			' Your IronPDF code for PDF generation or manipulation
			Dim Renderer = New IronPdf.HtmlToPdf()
			Dim PDF = Renderer.RenderHtmlAsPdf("<h1>Hello World!</h1>")
			PDF.SaveAs("Output.pdf")
			Logger.LogInformation("PDF created successfully.")
		Catch ex As Exception
			Logger.LogError(ex, "An error occurred while generating the PDF.")
		End Try

		Console.ReadKey()
	End Sub
End Class