Decimal.ToInt64(Decimal) Metode

Definisi

Ruang nama:

System

Rakitan:

System.Runtime.dll

Sumber:

Decimal.cs

Mengonversi nilai yang ditentukan Decimal ke bilangan bulat bertanda tangan 64-bit yang setara.

public:
 static long ToInt64(System::Decimal d);

public static long ToInt64 (decimal d);

static member ToInt64 : decimal -> int64

Public Shared Function ToInt64 (d As Decimal) As Long

Parameter

d

Decimal

Angka desimal yang akan dikonversi.

Mengembalikan

Int64

Bilangan bulat bertanda tangan 64-bit yang setara dengan nilai d.

Pengecualian

OverflowException

d kurang dari Int64.MinValue atau lebih besar dari Int64.MaxValue.

Contoh

Contoh berikut menggunakan ToInt64 metode untuk mengonversi angka desimal menjadi Int64 nilai.

using System;

class Example
{
   public static void Main( )
   {
      decimal[] values = { 123m, new Decimal(123000, 0, 0, false, 3),
                           123.999m, 18446744073709551615.999m,
                           18446744073709551616m, 9223372036854775807.999m,
                           9223372036854775808m, -0.999m, -1m,
                           -9223372036854775808.999m,
                           -9223372036854775809m };

      foreach (var value in values) {
         try {
            long number = Decimal.ToInt64(value);
            Console.WriteLine("{0} --> {1}", value, number);
         }
         catch (OverflowException e)
         {
             Console.WriteLine("{0}: {1}", e.GetType().Name, value);
         }
      }
   }
}
// The example displays the following output:
//   123 --> 123
//   123.000 --> 123
//   123.999 --> 123
//   OverflowException: 18446744073709551615.999
//   OverflowException: 18446744073709551616
//   9223372036854775807.999 --> 9223372036854775807
//   OverflowException: 9223372036854775808
//   -0.999 --> 0
//   -1 --> -1
//   -9223372036854775808.999 --> -9223372036854775808
//   OverflowException: -9223372036854775809

open System

let values = 
    [ 123m; Decimal(123000, 0, 0, false, 3uy)
      123.999m; 18446744073709551615.999m
      18446744073709551616m; 9223372036854775807.999m
      9223372036854775808m; -0.999m; -1m
      -9223372036854775808.999m
      -9223372036854775809m ]

for value in values do
    try
        let number = Decimal.ToInt64 value
        printfn $"{value} --> {number}"
    with :? OverflowException as e ->
        printfn $"{e.GetType().Name}: {value}"

// The example displays the following output:
//   123 --> 123
//   123.000 --> 123
//   123.999 --> 123
//   OverflowException: 18446744073709551615.999
//   OverflowException: 18446744073709551616
//   9223372036854775807.999 --> 9223372036854775807
//   OverflowException: 9223372036854775808
//   -0.999 --> 0
//   -1 --> -1
//   -9223372036854775808.999 --> -9223372036854775808
//   OverflowException: -9223372036854775809

Module Example
   Public Sub Main()
      Dim values() As Decimal = { 123d, New Decimal(123000, 0, 0, false, 3), 
                                  123.999d, 18446744073709551615.999d, 
                                  18446744073709551616d, 9223372036854775807.999d, 
                                  9223372036854775808d, -0.999d, -1d, 
                                  -9223372036854775808.999d, 
                                  -9223372036854775809d }

      For Each value In values
         Try
            Dim number As Long = Decimal.ToInt64(value)
            Console.WriteLine("{0} --> {1}", value, number)       
         Catch e As OverflowException
             Console.WriteLine("{0}: {1}", e.GetType().Name, value)
         End Try   
      Next
   End Sub
End Module
' The example displays the following output:
'   123 --> 123
'   123.000 --> 123
'   123.999 --> 123
'   OverflowException: 18446744073709551615.999
'   OverflowException: 18446744073709551616
'   9223372036854775807.999 --> 9223372036854775807
'   OverflowException: 9223372036854775808
'   -0.999 --> 0
'   -1 --> -1
'   -9223372036854775808.999 --> -9223372036854775808
'   OverflowException: -9223372036854775809

Keterangan

Nilai yang dikembalikan adalah bagian integral dari nilai desimal; digit pecahan dipotok.

Anda juga dapat mengonversi Decimal nilai menjadi bilangan bulat 64-bit dengan menggunakan Explicit operator penugasan. Karena operator melakukan konversi yang mempersempit, Anda harus menggunakan operator transmisi di C# atau fungsi konversi di Visual Basic.

Lihat juga

• Int64