Decimal.Compare(Decimal, Decimal) 方法
重要
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比較兩個指定的 Decimal 值。
public:
static int Compare(System::Decimal d1, System::Decimal d2);public static int Compare (decimal d1, decimal d2);static member Compare : decimal * decimal -> intPublic Shared Function Compare (d1 As Decimal, d2 As Decimal) As Integer- d1
- Decimal
要比較的第一個值。
- d2
- Decimal
要比較的第二個值。
帶正負號的數字，該數字表示 d1 和 d2 的相對值。
| 傳回值 | 意義 |
|---|---|
| 小於零 |
d1 小於 d2。
|
| 零 |
d1 和 d2 相等。
|
| 大於零 |
d1 大於 d2。
|
下列範例會比較數個 Decimal 值。 請注意，第一個比較指出，儘管在變數上 value2 執行的減法運算，兩個值都相等。 這是因為 Decimal 類型有 29 位數的有效位數，而這兩個值之間的差異只能偵測到 30 位數的有效位數。
using System;
public enum Relationship
{ LessThan = -1, Equals = 0, GreaterThan = 1 }
public class Example
{
public static void Main()
{
decimal value1 = Decimal.MaxValue;
decimal value2 = value1 - .01m;
Console.WriteLine("{0} {2} {1}", value1, value2,
(Relationship) Decimal.Compare(value1, value2));
value2 = value1 / 12m - .1m;
value1 = value1 / 12m;
Console.WriteLine("{0} {2} {1}", value1, value2,
(Relationship) Decimal.Compare(value1, value2));
value1 = value1 - .2m;
value2 = value2 + .1m;
Console.WriteLine("{0} {2} {1}", value1, value2,
(Relationship) Decimal.Compare(value1, value2));
}
}
// The example displays the following output:
// 79228162514264337593543950335 Equals 79228162514264337593543950335
// 6602346876188694799461995861.2 GreaterThan 6602346876188694799461995861.1
// 6602346876188694799461995861.0 LessThan 6602346876188694799461995861.2
open System
type Relationship =
| LessThan = -1
| Equals = 0
| GreaterThan = 1
[<EntryPoint>]
let main _ =
let value1 = Decimal.MaxValue
let value2 = value1 - 0.01m
printfn $"{value1} {Decimal.Compare(value1, value2) |> enum<Relationship>} {value2}"
let value2 = value1 / 12m - 0.1m
let value1 = value1 / 12m
printfn $"{value1} {Decimal.Compare(value1, value2) |> enum<Relationship>} {value2}"
let value1 = value1 - 0.2m
let value2 = value2 + 0.1m
printfn $"{value1} {Decimal.Compare(value1, value2) |> enum<Relationship>} {value2}"
0
// The example displays the following output:
// 79228162514264337593543950335 Equals 79228162514264337593543950335
// 6602346876188694799461995861.2 GreaterThan 6602346876188694799461995861.1
// 6602346876188694799461995861.0 LessThan 6602346876188694799461995861.2
Public Enum Relationship As Integer
LessThan = -1
Equals = 0
GreaterThan = 1
End Enum
Module Example
Public Sub Main()
Dim value1 As Decimal = Decimal.MaxValue
Dim value2 As Decimal = value1 - .01d
Console.WriteLine("{0} {2} {1}", value1, value2,
CType(Decimal.Compare(value1, value2), Relationship))
value2 = value1 / 12d - .1d
value1 = value1 / 12d
Console.WriteLine("{0} {2} {1}", value1, value2,
CType(Decimal.Compare(value1, value2), Relationship))
value1 = value1 - .2d
value2 = value2 + .1d
Console.WriteLine("{0} {2} {1}", value1, value2,
CType(Decimal.Compare(value1, value2), Relationship))
End Sub
End Module
' The example displays the following output:
' 79228162514264337593543950335 Equals 79228162514264337593543950335
' 6602346876188694799461995861.2 GreaterThan 6602346876188694799461995861.1
' 6602346876188694799461995861.0 LessThan 6602346876188694799461995861.2
| 產品 | 版本 |
|---|---|
| .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 |
| .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 |
