小数。C# 中的 ToUInt64()方法
原文:https://www . geesforgeks . org/decimal-touint 64-method-in-c-sharp/
此方法用于将指定的十进制值转换为等效的 64 位无符号整数。用户还可以使用显式赋值运算符将十进制值转换为 64 位无符号整数。
语法:公共静态 ulong ToUInt64(十进制 d);
这里 d 是要转换的十进制数。
返回值:返回一个 64 位无符号整数,相当于指定值,即 d 。
异常:如果指定值为负值或大于最大值,该方法将给出overoverowexception。
以下程序说明了上述方法的使用:
例 1:
// C# program to demonstrate the
// Decimal.ToUInt64(Decimal) Method
using System;
class GFG {
// Main Method
public static void Main()
{
try {
// Taking decimal variables
Decimal dec1 = 9223372036854775807.999m;
Decimal dec2 = 18446744073709551615.784m;
// using Decimal.ToUInt64(Decimal) Method
ulong val1 = Decimal.ToUInt64(dec1);
// using Decimal.ToUInt64(Decimal) Method
ulong val2 = Decimal.ToUInt64(dec2);
// Printing the UInt64 value
Console.WriteLine("The UInt64 value "
+ "is : {0}", val1);
// Printing the UInt64 value
Console.WriteLine("The UInt64 value "
+ "is : {0}", val2);
}
catch (OverflowException e) {
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
Output:
The UInt64 value is : 9223372036854775807
The UInt64 value is : 18446744073709551615
例 2: 适用于飞越异常
// C# program to demonstrate the
// Decimal.ToUInt64(Decimal) Method
using System;
class GFG {
// Main Method
public static void Main()
{
try {
// Taking the maximum value
// of Decimal
Decimal dec1 = Decimal.MaxValue;
// using Decimal.ToUInt64(Decimal) Method
// It will give error as decimal number
// is above the range of UInt64
ulong val1 = Decimal.ToUInt64(dec1);
// Printing the UInt64 value
Console.WriteLine("The UInt64 value "
+ "is : {0}",val1);
}
catch (OverflowException e) {
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
Output:
Exception Thrown: System.OverflowException
参考:
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