Decimal.ToDouble() 方法在 C# 中


C# 中的 Decimal.ToDouble() 方法用于将指定 Decimal 的值转换为等效的双精度浮点数。

语法

以下是语法 −

public static double ToDouble (decimal val);

上面,Val 是要转换的小数。

示例

下面我们来看一个示例,来说明如何实现 Decimal.ToDouble() 方法−

using System;
public class Demo {
   public static void Main(){
      Decimal val1 = -0.22m;
      Decimal val2 = -0.01m;
      Console.WriteLine("Decimal 1 = "+val1);
      Console.WriteLine("Decimal 2 = "+val2);
      Double res1 = Decimal.ToDouble(val1);
      Double res2 = Decimal.ToDouble(val2);
      Console.WriteLine("Double value1 (Decimal to Double) = "+res1);
      Console.WriteLine("Double value2 (Decimal to Double) = "+res2);
   }
}

输出

将产生以下输出 −

Decimal 1 = -0.22
Decimal 2 = -0.01
Double value1 (Decimal to Double) = -0.22
Double value2 (Decimal to Double) = -0.01

示例

下面我们来看另一个示例,来说明如何实现 Decimal.ToDouble() 方法−

using System;
public class Demo {
   public static void Main(){
      Decimal val1 = 23828m;
      Decimal val2 = 976587687595766665m;
      Console.WriteLine("Decimal 1 = "+val1);
      Console.WriteLine("Decimal 2 = "+val2);
      Double res1 = Decimal.ToDouble(val1);
      Double res2 = Decimal.ToDouble(val2);
      Console.WriteLine("Double value1 (Decimal to Double) = "+res1);
      Console.WriteLine("Double value2 (Decimal to Double) = "+res2);
   }
}

输出

将产生以下输出 −

Decimal 1 = 23828
Decimal 2 = 976587687595766665
Double value1 (Decimal to Double) = 23828
Double value2 (Decimal to Double) = 9.76587687595767E+17

更新于: 12-Nov-2019

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