本文整理汇总了C#中System.Decimal.Round方法的典型用法代码示例。如果您正苦于以下问题：C# Decimal.Round方法的具体用法？C# Decimal.Round怎么用？C# Decimal.Round使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Decimal的用法示例。
在下文中一共展示了Decimal.Round方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
public class Example
{
public static void Main()
{
for (decimal value = 100m; value <= 102m; value += .1m)
Console.WriteLine("{0} --> {1}", value, Decimal.Round(value));
}
}输出：
100 --> 100 100.1 --> 100 100.2 --> 100 100.3 --> 100 100.4 --> 100 100.5 --> 100 100.6 --> 101 100.7 --> 101 100.8 --> 101 100.9 --> 101 101.0 --> 101 101.1 --> 101 101.2 --> 101 101.3 --> 101 101.4 --> 101 101.5 --> 102 101.6 --> 102 101.7 --> 102 101.8 --> 102 101.9 --> 102 102.0 --> 102
示例2: Main
//引入命名空间
using System;
class Example
{
public static void Main()
{
// Define a set of Decimal values.
decimal[] values = { 1.45m, 1.55m, 123.456789m, 123.456789m,
123.456789m, -123.456m,
new Decimal(1230000000, 0, 0, true, 7 ),
new Decimal(1230000000, 0, 0, true, 7 ),
-9999999999.9999999999m,
-9999999999.9999999999m };
// Define a set of integers to for decimals argument.
int[] decimals = { 1, 1, 4, 6, 8, 0, 3, 11, 9, 10};
Console.WriteLine("{0,26}{1,8}{2,26}",
"Argument", "Digits", "Result" );
Console.WriteLine("{0,26}{1,8}{2,26}",
"--------", "------", "------" );
for (int ctr = 0; ctr < values.Length; ctr++)
Console.WriteLine("{0,26}{1,8}{2,26}",
values[ctr], decimals[ctr],
Decimal.Round(values[ctr], decimals[ctr]));
}
}输出：
Argument Digits Result -------- ------ ------ 1.45 1 1.4 1.55 1 1.6 123.456789 4 123.4568 123.456789 6 123.456789 123.456789 8 123.456789 -123.456 0 -123 -123.0000000 3 -123.000 -123.0000000 11 -123.0000000 -9999999999.9999999999 9 -10000000000.000000000 -9999999999.9999999999 10 -9999999999.9999999999
示例3: for
Console.WriteLine("{0,-10} {1,-10} {2,-10} {3,-15}", "Value", "Default",
"ToEven", "AwayFromZero");
for (decimal value = 12.0m; value <= 13.0m; value += 0.1m)
Console.WriteLine("{0,-10} {1,-10} {2,-10} {3,-15}",
value, Math.Round(value),
Math.Round(value, MidpointRounding.ToEven),
Math.Round(value, MidpointRounding.AwayFromZero));输出：
Value Default ToEven AwayFromZero 12 12 12 12 12.1 12 12 12 12.2 12 12 12 12.3 12 12 12 12.4 12 12 12 12.5 12 12 13 12.6 13 13 13 12.7 13 13 13 12.8 13 13 13 12.9 13 13 13 13.0 13 13 13
示例4:
decimal result = 0.0m;
decimal posValue = 3.45m;
decimal negValue = -3.45m;
// By default, round a positive and a negative value to the nearest even number.
// The precision of the result is 1 decimal place.
result = Math.Round(posValue, 1);
Console.WriteLine("{0,4} = Math.Round({1,5}, 1)", result, posValue);
result = Math.Round(negValue, 1);
Console.WriteLine("{0,4} = Math.Round({1,5}, 1)", result, negValue);
Console.WriteLine();
// Round a positive value to the nearest even number, then to the nearest number away from zero.
// The precision of the result is 1 decimal place.
result = Math.Round(posValue, 1, MidpointRounding.ToEven);
Console.WriteLine("{0,4} = Math.Round({1,5}, 1, MidpointRounding.ToEven)", result, posValue);
result = Math.Round(posValue, 1, MidpointRounding.AwayFromZero);
Console.WriteLine("{0,4} = Math.Round({1,5}, 1, MidpointRounding.AwayFromZero)", result, posValue);
Console.WriteLine();
// Round a negative value to the nearest even number, then to the nearest number away from zero.
// The precision of the result is 1 decimal place.
result = Math.Round(negValue, 1, MidpointRounding.ToEven);
Console.WriteLine("{0,4} = Math.Round({1,5}, 1, MidpointRounding.ToEven)", result, negValue);
result = Math.Round(negValue, 1, MidpointRounding.AwayFromZero);
Console.WriteLine("{0,4} = Math.Round({1,5}, 1, MidpointRounding.AwayFromZero)", result, negValue);
Console.WriteLine();输出：
3.4 = Math.Round( 3.45, 1) -3.4 = Math.Round(-3.45, 1) 3.4 = Math.Round( 3.45, 1, MidpointRounding.ToEven) 3.5 = Math.Round( 3.45, 1, MidpointRounding.AwayFromZero) -3.4 = Math.Round(-3.45, 1, MidpointRounding.ToEven) -3.5 = Math.Round(-3.45, 1, MidpointRounding.AwayFromZero)