# TimeSpan.FromMilliseconds(Double)TimeSpan.FromMilliseconds(Double)TimeSpan.FromMilliseconds(Double)TimeSpan.FromMilliseconds(Double) Method

## 定义

``````public:
static TimeSpan FromMilliseconds(double value);``````
``public static TimeSpan FromMilliseconds (double value);``
``static member FromMilliseconds : double -> TimeSpan``
``Public Shared Function FromMilliseconds (value As Double) As TimeSpan``

#### 参数

value
Double Double Double Double

#### 异常

`value` 小于 MinValue 或大于 MaxValue`value` is less than MinValue or greater than MaxValue.

- 或 --or- `value`PositiveInfinity`value` is PositiveInfinity.

-or- `value`NegativeInfinity`value` is NegativeInfinity.

`value` 等于 NaN`value` is equal to NaN.

## 示例

``````// Example of the TimeSpan::FromMilliseconds( double ) method.
using namespace System;
void GenTimeSpanFromMillisec( Double millisec )
{

// Create a TimeSpan object and TimeSpan string from
// a number of milliseconds.
TimeSpan interval = TimeSpan::FromMilliseconds( millisec );
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 = String::Concat( timeInterval, "        " );

Console::WriteLine( "{0,21}{1,26}", millisec, timeInterval );
}

int main()
{
Console::WriteLine( "This example of TimeSpan::FromMilliseconds( double )\n"
"generates the following output.\n" );
Console::WriteLine( "{0,21}{1,18}", "FromMilliseconds", "TimeSpan" );
Console::WriteLine( "{0,21}{1,18}", "----------------", "--------" );
GenTimeSpanFromMillisec( 1 );
GenTimeSpanFromMillisec( 1.5 );
GenTimeSpanFromMillisec( 12345.6 );
GenTimeSpanFromMillisec( 123456789.8 );
GenTimeSpanFromMillisec( 1234567898765.4 );
GenTimeSpanFromMillisec( 1000 );
GenTimeSpanFromMillisec( 60000 );
GenTimeSpanFromMillisec( 3600000 );
GenTimeSpanFromMillisec( 86400000 );
GenTimeSpanFromMillisec( 1801220200 );
}

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

FromMilliseconds          TimeSpan
----------------          --------
1          00:00:00.0010000
1.5          00:00:00.0020000
12345.6          00:00:12.3460000
123456789.8        1.10:17:36.7900000
1234567898765.4    14288.23:31:38.7650000
1000          00:00:01
60000          00:01:00
3600000          01:00:00
86400000        1.00:00:00
1801220200       20.20:20:20.2000000
*/
``````
``````// Example of the TimeSpan.FromMilliseconds( double ) method.
using System;

class FromMillisecDemo
{
static void GenTimeSpanFromMillisec( Double millisec )
{
// Create a TimeSpan object and TimeSpan string from
// a number of milliseconds.
TimeSpan    interval = TimeSpan.FromMilliseconds( millisec );
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}", millisec, timeInterval );
}

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

GenTimeSpanFromMillisec( 1 );
GenTimeSpanFromMillisec( 1.5 );
GenTimeSpanFromMillisec( 12345.6 );
GenTimeSpanFromMillisec( 123456789.8 );
GenTimeSpanFromMillisec( 1234567898765.4 );
GenTimeSpanFromMillisec( 1000 );
GenTimeSpanFromMillisec( 60000 );
GenTimeSpanFromMillisec( 3600000 );
GenTimeSpanFromMillisec( 86400000 );
GenTimeSpanFromMillisec( 1801220200 );
}
}

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

FromMilliseconds          TimeSpan
----------------          --------
1          00:00:00.0010000
1.5          00:00:00.0020000
12345.6          00:00:12.3460000
123456789.8        1.10:17:36.7900000
1234567898765.4    14288.23:31:38.7650000
1000          00:00:01
60000          00:01:00
3600000          01:00:00
86400000        1.00:00:00
1801220200       20.20:20:20.2000000
*/
``````
``````' Example of the TimeSpan.FromMilliseconds( Double ) method.
Imports System
Imports Microsoft.VisualBasic

Module FromMillisecDemo

Sub GenTimeSpanFromMillisec( millisec As Double )

' Create a TimeSpan object and TimeSpan string from
' a number of milliseconds.
Dim interval As TimeSpan = _
TimeSpan.FromMilliseconds( millisec )
Dim timeInterval As String = interval.ToString( )

' Pad the end of the TimeSpan string with spaces if it
' does not contain milliseconds.
Dim pIndex As Integer = timeInterval.IndexOf( ":"c )
pIndex = timeInterval.IndexOf( "."c, pIndex )
If pIndex < 0 Then   timeInterval &= "        "

Console.WriteLine( "{0,21}{1,26}", millisec, timeInterval )
End Sub

Sub Main( )

Console.WriteLine( "This example of " & _
"TimeSpan.FromMilliseconds( Double )" & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( "{0,21}{1,18}", _
"FromMilliseconds", "TimeSpan" )
Console.WriteLine( "{0,21}{1,18}", _
"----------------", "--------" )

GenTimeSpanFromMillisec( 1 )
GenTimeSpanFromMillisec( 1.5 )
GenTimeSpanFromMillisec( 12345.6 )
GenTimeSpanFromMillisec( 123456789.8 )
GenTimeSpanFromMillisec( 1234567898765.4 )
GenTimeSpanFromMillisec( 1000 )
GenTimeSpanFromMillisec( 60000 )
GenTimeSpanFromMillisec( 3600000 )
GenTimeSpanFromMillisec( 86400000 )
GenTimeSpanFromMillisec( 1801220200 )
End Sub
End Module

' This example of TimeSpan.FromMilliseconds( Double )
' generates the following output.
'
'      FromMilliseconds          TimeSpan
'      ----------------          --------
'                     1          00:00:00.0010000
'                   1.5          00:00:00.0020000
'               12345.6          00:00:12.3460000
'           123456789.8        1.10:17:36.7900000
'       1234567898765.4    14288.23:31:38.7650000
'                  1000          00:00:01
'                 60000          00:01:00
'               3600000          01:00:00
'              86400000        1.00:00:00
'            1801220200       20.20:20:20.2000000
``````

## 注解

``````// The following throws an OverflowException at runtime
TimeSpan maxSpan = TimeSpan.FromMilliseconds(TimeSpan.MaxValue.TotalMilliseconds);
``````
``````' The following throws an OverflowException at runtime
Dim maxSpan As TimeSpan = TimeSpan.FromMilliseconds(TimeSpan.MaxValue.TotalMilliseconds)
``````