C# TimeSpan格式（開發者如何理解其工作）

// Creating TimeSpan instances
TimeSpan taskDuration = TimeSpan.FromHours(2.5); // 2 hours and 30 minutes
TimeSpan breakDuration = TimeSpan.FromMinutes(15); // 15 minutes
// Calculating total time spent
TimeSpan totalTime = taskDuration + breakDuration;
Console.WriteLine($"Total time spent: {totalTime}"); // Outputs: 02:45:00

' Creating TimeSpan instances
Dim taskDuration As TimeSpan = TimeSpan.FromHours(2.5) ' 2 hours and 30 minutes
Dim breakDuration As TimeSpan = TimeSpan.FromMinutes(15) ' 15 minutes
' Calculating total time spent
Dim totalTime As TimeSpan = taskDuration.Add(breakDuration)
Console.WriteLine($"Total time spent: {totalTime}") ' Outputs: 02:45:00

TimeSpan duration = new TimeSpan(1, 2, 30, 45); // 1 day, 2 hours, 30 minutes, 45 seconds
// Default "c" format string produces the output: 1.02:30:45
Console.WriteLine(duration.ToString("c"));
// Custom format "hh:mm:ss" outputs: 26:30:45
Console.WriteLine(duration.ToString(@"hh\:mm\:ss")); 
// Custom format with days, outputs: 1d 02h 30m
Console.WriteLine(duration.ToString(@"d'd 'hh'h 'mm'm '"));

Dim duration As New TimeSpan(1, 2, 30, 45) ' 1 day, 2 hours, 30 minutes, 45 seconds
' Default "c" format string produces the output: 1.02:30:45
Console.WriteLine(duration.ToString("c"))
' Custom format "hh:mm:ss" outputs: 26:30:45
Console.WriteLine(duration.ToString("hh\:mm\:ss"))
' Custom format with days, outputs: 1d 02h 30m
Console.WriteLine(duration.ToString("d'd 'hh'h 'mm'm '"))

using IronPdf;
class Program
{
    public static void Main(string[] args)
    {
        TimeSpan duration = new TimeSpan(9, 30, 25);
        var employees = new List<(string name, TimeSpan timeSpan)> {
        ("Jane Doe",  duration),
        ("John Doe", duration)
        };
        GenerateWorkLogReport(employees);
    }
    public static void GenerateWorkLogReport(List<(string Employee, TimeSpan Duration)> workLogs)
    {
        ChromePdfRenderer renderer = new ChromePdfRenderer();
        var htmlContent = "<h1>Work Log Report</h1><table border='1'><tr><th>Employee</th><th>Duration</th></tr>";
        foreach (var log in workLogs)
        {
            // Custom format string to format the TimeSpan value for display
            string formattedDuration = log.Duration.ToString(@"hh\:mm");
            htmlContent += $"<tr><td>{log.Employee}</td><td>{formattedDuration}</td></tr>";
        }
        htmlContent += "</table>";
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);
        pdf.SaveAs("WorkLogReport.pdf");
    }
}

Imports IronPdf
Friend Class Program
	Public Shared Sub Main(ByVal args() As String)
		Dim duration As New TimeSpan(9, 30, 25)
		Dim employees = New List(Of (name As String, timeSpan As TimeSpan)) From {("Jane Doe", duration), ("John Doe", duration)}
		GenerateWorkLogReport(employees)
	End Sub
	Public Shared Sub GenerateWorkLogReport(ByVal workLogs As List(Of (Employee As String, Duration As TimeSpan)))
		Dim renderer As New ChromePdfRenderer()
		Dim htmlContent = "<h1>Work Log Report</h1><table border='1'><tr><th>Employee</th><th>Duration</th></tr>"
		For Each log In workLogs
			' Custom format string to format the TimeSpan value for display
			Dim formattedDuration As String = log.Duration.ToString("hh\:mm")
			htmlContent &= $"<tr><td>{log.Employee}</td><td>{formattedDuration}</td></tr>"
		Next log
		htmlContent &= "</table>"
		Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)
		pdf.SaveAs("WorkLogReport.pdf")
	End Sub
End Class

class Program
{
    public static void Main(string[] args)
    {
        // Sample data: List of employee names and their work durations (TimeSpan)
        var workLogs = new List<(string Employee, TimeSpan Duration)>
        {
            ("Alice", new TimeSpan(5, 30, 0)), // 5 hours, 30 minutes
            ("Bob", new TimeSpan(3, 15, 0)),   // 3 hours, 15 minutes
            ("Charlie", new TimeSpan(7, 45, 0)) // 7 hours, 45 minutes
        };
        // Create the HTML content for the PDF report
        string htmlContent = @"
            <h1>Work Log Report</h1>
            <table border='1' cellpadding='5' cellspacing='0'>
                <tr>
                    <th>Employee</th>
                    <th>Work Duration (hh:mm)</th>
                </tr>";
        // Loop through the work logs and add rows to the table
        foreach (var log in workLogs)
        {
            string formattedDuration = FormatLargeTimeSpan(log.Duration);  // Custom method to format large TimeSpan values
            htmlContent += $"<tr><td>{log.Employee}</td><td>{formattedDuration}</td></tr>";
        }
        // Close the HTML table
        htmlContent += "</table>";
        // Create a new HtmlToPdf renderer
        ChromePdfRenderer renderer = new ChromePdfRenderer();
        // Render the HTML content as a PDF
        PdfDocument pdf = renderer.RenderHtmlAsPdf(htmlContent);
        // Save the PDF to a file
        pdf.SaveAs("WorkLogReport.pdf");
    }
    // Custom method to handle the formatting operation
    static string FormatLargeTimeSpan(TimeSpan timeSpan)
    {
        // Check if there are days in the TimeSpan and format accordingly
        if (timeSpan.TotalDays >= 1)
        {
            return string.Format("{0} days, {1} hours, {2} minutes",
                (int)timeSpan.TotalDays,
                timeSpan.Hours,
                timeSpan.Minutes);
        }
        else
        {
            // If the duration is less than a day, show only hours and minutes
            return string.Format("{0} hours, {1} minutes", timeSpan.Hours, timeSpan.Minutes);
        }
    }
}

Imports System

Friend Class Program
	Public Shared Sub Main(ByVal args() As String)
		' Sample data: List of employee names and their work durations (TimeSpan)
		Dim workLogs = New List(Of (Employee As String, Duration As TimeSpan)) From {("Alice", New TimeSpan(5, 30, 0)), ("Bob", New TimeSpan(3, 15, 0)), ("Charlie", New TimeSpan(7, 45, 0))}
		' Create the HTML content for the PDF report
		Dim htmlContent As String = "
            <h1>Work Log Report</h1>
            <table border='1' cellpadding='5' cellspacing='0'>
                <tr>
                    <th>Employee</th>
                    <th>Work Duration (hh:mm)</th>
                </tr>"
		' Loop through the work logs and add rows to the table
		For Each log In workLogs
			Dim formattedDuration As String = FormatLargeTimeSpan(log.Duration) ' Custom method to format large TimeSpan values
			htmlContent &= $"<tr><td>{log.Employee}</td><td>{formattedDuration}</td></tr>"
		Next log
		' Close the HTML table
		htmlContent &= "</table>"
		' Create a new HtmlToPdf renderer
		Dim renderer As New ChromePdfRenderer()
		' Render the HTML content as a PDF
		Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(htmlContent)
		' Save the PDF to a file
		pdf.SaveAs("WorkLogReport.pdf")
	End Sub
	' Custom method to handle the formatting operation
	Private Shared Function FormatLargeTimeSpan(ByVal timeSpan As TimeSpan) As String
		' Check if there are days in the TimeSpan and format accordingly
		If timeSpan.TotalDays >= 1 Then
			Return String.Format("{0} days, {1} hours, {2} minutes", CInt(Math.Truncate(timeSpan.TotalDays)), timeSpan.Hours, timeSpan.Minutes)
		Else
			' If the duration is less than a day, show only hours and minutes
			Return String.Format("{0} hours, {1} minutes", timeSpan.Hours, timeSpan.Minutes)
		End If
	End Function
End Class