# BigInteger.ModPow(BigInteger, BigInteger, BigInteger) 方法

## 定义

``````public:
static System::Numerics::BigInteger ModPow(System::Numerics::BigInteger value, System::Numerics::BigInteger exponent, System::Numerics::BigInteger modulus);``````
``public static System.Numerics.BigInteger ModPow (System.Numerics.BigInteger value, System.Numerics.BigInteger exponent, System.Numerics.BigInteger modulus);``
``static member ModPow : System.Numerics.BigInteger * System.Numerics.BigInteger * System.Numerics.BigInteger -> System.Numerics.BigInteger``
``Public Shared Function ModPow (value As BigInteger, exponent As BigInteger, modulus As BigInteger) As BigInteger``

#### 参数

value
BigInteger

exponent
BigInteger

`value` 进行幂运算的指数。The exponent to raise `value` by.

modulus
BigInteger

`value``exponent` 次幂要除以的数值。The number by which to divide `value` raised to the `exponent` power.

#### 返回

`value`exponent 除以 `modulus` 后的余数。The remainder after dividing `value`exponent by `modulus`.

#### 例外

`modulus` 为零。`modulus` is zero.

`exponent` 为负数。`exponent` is negative.

## 示例

``````using System;
using System.Numerics;

public class Class1
{
public static void Main()
{
BigInteger number = 10;
int exponent = 3;
BigInteger modulus = 30;
Console.WriteLine("({0}^{1}) Mod {2} = {3}",
number, exponent, modulus,
BigInteger.ModPow(number, exponent, modulus));
}
}
// The example displays the following output:
//      (10^3) Mod 30 = 10
``````
``````Imports System.Numerics

Module Example
Public Sub Main()
Dim number As BigInteger = 10
Dim exponent As Integer = 3
Dim modulus As BigInteger = 30
Console.WriteLine("({0}^{1}) Mod {2} = {3}", _
number, exponent, modulus, _
BigInteger.ModPow(number, exponent, modulus))
End Sub
End Module
' The example displays the following output:
'       (10^3) Mod 30 = 10
``````

## 注解

ModPow 方法计算以下表达式：The ModPow method evaluates the following expression:

（接受 basevalue ^ 指数）Mod 取模(baseValue ^ exponent) Mod modulus