Прочетете на английски Редактиране

Споделяне чрез


TimeSpan.FromSeconds Method

Definition

Overloads

FromSeconds(Double)

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

FromSeconds(Int64)

Initializes a new instance of the TimeSpan structure to a specified number of seconds.

FromSeconds(Int64, Int64, Int64)

Initializes a new instance of the TimeSpan structure to a specified number of seconds, milliseconds, and microseconds.

FromSeconds(Double)

Source:
TimeSpan.cs
Source:
TimeSpan.cs
Source:
TimeSpan.cs

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

C#
public static TimeSpan FromSeconds(double value);

Parameters

value
Double

A number of seconds, accurate to the nearest millisecond.

Returns

An object that represents value.

Exceptions

value is less than TimeSpan.MinValue or greater than TimeSpan.MaxValue.

-or-

value is PositiveInfinity.

-or-

value is NegativeInfinity.

value is equal to NaN.

Examples

The following example creates several TimeSpan objects using the FromSeconds method.

C#
// Example of the TimeSpan.FromSeconds( double ) method.
using System;

class FromSecondsDemo
{
    static void GenTimeSpanFromSeconds( double seconds )
    {
        // Create a TimeSpan object and TimeSpan string from 
        // a number of seconds.
        TimeSpan    interval = TimeSpan.FromSeconds( seconds );
        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}", seconds, timeInterval );
    } 

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

        GenTimeSpanFromSeconds( 0.001 );
        GenTimeSpanFromSeconds( 0.0015 );
        GenTimeSpanFromSeconds( 12.3456 );
        GenTimeSpanFromSeconds( 123456.7898 );
        GenTimeSpanFromSeconds( 1234567898.7654 );
        GenTimeSpanFromSeconds( 1 );
        GenTimeSpanFromSeconds( 60 );
        GenTimeSpanFromSeconds( 3600 );
        GenTimeSpanFromSeconds( 86400 );
        GenTimeSpanFromSeconds( 1801220.2 );
    } 
} 

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

          FromSeconds          TimeSpan
          -----------          --------
                0.001          00:00:00.0010000
               0.0015          00:00:00.0020000
              12.3456          00:00:12.3460000
          123456.7898        1.10:17:36.7900000
      1234567898.7654    14288.23:31:38.7650000
                    1          00:00:01
                   60          00:01:00
                 3600          01:00:00
                86400        1.00:00:00
            1801220.2       20.20:20:20.2000000
*/

Remarks

The value parameter is converted to milliseconds, which is converted to ticks, and that number of ticks is used to initialize the new TimeSpan. Therefore, value will only be considered accurate to the nearest millisecond. Note that, because of the loss of precision of the Double data type, this can generate an OverflowException for values that are near but still in the range of either MinValue or MaxValue, This is the cause of an OverflowException, for example, in the following attempt to instantiate a TimeSpan object.

C#
// The following throws an OverflowException at runtime
TimeSpan maxSpan = TimeSpan.FromSeconds(TimeSpan.MaxValue.TotalSeconds);

See also

Applies to

.NET 10 и други версии
Продукт Версии
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

FromSeconds(Int64)

Initializes a new instance of the TimeSpan structure to a specified number of seconds.

C#
public static TimeSpan FromSeconds(long seconds);

Parameters

seconds
Int64

Number of seconds.

Returns

Returns a TimeSpan that represents a specified number of seconds.

Exceptions

The parameters specify a TimeSpan value less than MinValue or greater than MaxValue.

Applies to

.NET 10 и .NET 9
Продукт Версии
.NET 9, 10

FromSeconds(Int64, Int64, Int64)

Initializes a new instance of the TimeSpan structure to a specified number of seconds, milliseconds, and microseconds.

C#
public static TimeSpan FromSeconds(long seconds, long milliseconds = 0, long microseconds = 0);

Parameters

seconds
Int64

Number of seconds.

milliseconds
Int64

Number of milliseconds.

microseconds
Int64

Number of microseconds.

Returns

Returns a TimeSpan that represents a specified number of seconds, milliseconds, and microseconds.

Exceptions

The parameters specify a TimeSpan value less than MinValue or greater than MaxValue.

Applies to

.NET 10 и .NET 9
Продукт Версии
.NET 9, 10