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TimeSpan.FromDays Method

Returns a TimeSpan that represents a specified number of days, where the specification is accurate to the nearest millisecond.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

public static TimeSpan FromDays (
	double value
)
public static TimeSpan FromDays (
	double value
)
public static function FromDays (
	value : double
) : TimeSpan

Parameters

value

A number of days, accurate to the nearest millisecond.

Return Value

A TimeSpan that represents value.

Exception typeCondition

OverflowException

value is less than MinValue or greater than MaxValue.

ArgumentException

value is equal to Double.NaN.

The value parameter is converted to milliseconds, which is converted to ticks, and that number of ticks is used to intialize the new TimeSpan. Therefore, value will only be considered accurate to the nearest millisecond.

If value is Double.PositiveInfinity, MaxValue is returned. If value is Double.NegativeInfinity, MinValue is returned.

The following code example creates several TimeSpan objects using the FromDays method.

// Example of the TimeSpan.FromDays( double ) method.
using System;

class FromDaysDemo
{
    static void GenTimeSpanFromDays( double days )
    {
        // Create a TimeSpan object and TimeSpan string from 
        // a number of days.
        TimeSpan interval = TimeSpan.FromDays( days );
        string   timeInterval = interval.ToString( );

        // Pad the end of the TimeSpan string with spaces if it 
        // does not contain milliseconds.
        int pIndex = timeInterval.IndexOf( ':' );
        pIndex = timeInterval.IndexOf( '.', pIndex );
        if( pIndex < 0 )   timeInterval += "        ";

        Console.WriteLine( "{0,21}{1,26}", days, timeInterval );
    } 

    static void Main( )
    {
        Console.WriteLine(
            "This example of TimeSpan.FromDays( double )\n" +
            "generates the following output.\n" );
        Console.WriteLine( "{0,21}{1,18}",
            "FromDays", "TimeSpan" );
        Console.WriteLine( "{0,21}{1,18}", 
            "--------", "--------" );

        GenTimeSpanFromDays( 0.000000006 );
        GenTimeSpanFromDays( 0.000000017 );
        GenTimeSpanFromDays( 0.000123456 );
        GenTimeSpanFromDays( 1.234567898 );
        GenTimeSpanFromDays( 12345.678987654 );
        GenTimeSpanFromDays( 0.000011574 );
        GenTimeSpanFromDays( 0.000694444 );
        GenTimeSpanFromDays( 0.041666666 );
        GenTimeSpanFromDays( 1 );
        GenTimeSpanFromDays( 20.84745602 );
    } 
} 

/*
This example of TimeSpan.FromDays( double )
generates the following output.

             FromDays          TimeSpan
             --------          --------
                6E-09          00:00:00.0010000
              1.7E-08          00:00:00.0010000
          0.000123456          00:00:10.6670000
          1.234567898        1.05:37:46.6660000
      12345.678987654    12345.16:17:44.5330000
           1.1574E-05          00:00:01
          0.000694444          00:01:00
          0.041666666          01:00:00
                    1        1.00:00:00
          20.84745602       20.20:20:20.2000000
*/ 

// Example of the TimeSpan.FromDays( double ) method.
import System.*;

class FromDaysDemo
{
    static void GenTimeSpanFromDays(double days)
    {
        // Create a TimeSpan object and TimeSpan string from 
        // a number of days.
        TimeSpan interval = TimeSpan.FromDays(days);
        String timeInterval = interval.ToString();

        // Pad the end of the TimeSpan string with spaces if it 
        // does not contain milliseconds.
        int pIndex = timeInterval.IndexOf(':');

        pIndex = timeInterval.IndexOf('.', pIndex);
        if (pIndex < 0) {
            timeInterval += "        ";
        }

        Console.WriteLine("{0,21}{1,26}", new Object[] { (System.Double)days,
            timeInterval });
    } //GenTimeSpanFromDays

    public static void main(String[] args)
    {
        Console.WriteLine(("This example of TimeSpan.FromDays( double )\n"
            + "generates the following output.\n"));
        Console.WriteLine("{0,21}{1,18}", "FromDays", "TimeSpan");
        Console.WriteLine("{0,21}{1,18}", "--------", "--------");
        GenTimeSpanFromDays(0.000000006);
        GenTimeSpanFromDays(0.000000017);
        GenTimeSpanFromDays(0.000123456);
        GenTimeSpanFromDays(1.234567898);
        GenTimeSpanFromDays(12345.678987654);
        GenTimeSpanFromDays(0.000011574);
        GenTimeSpanFromDays(0.000694444);
        GenTimeSpanFromDays(0.041666666);
        GenTimeSpanFromDays(1);
        GenTimeSpanFromDays(20.84745602);
    } //main
} //FromDaysDemo

/*
This example of TimeSpan.FromDays( double )
generates the following output.

             FromDays          TimeSpan
             --------          --------
                6E-09          00:00:00.0010000
              1.7E-08          00:00:00.0010000
          0.000123456          00:00:10.6670000
          1.234567898        1.05:37:46.6660000
      12345.678987654    12345.16:17:44.5330000
           1.1574E-05          00:00:01
          0.000694444          00:01:00
          0.041666666          01:00:00
                    1        1.00:00:00
          20.84745602       20.20:20:20.2000000
*/

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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