[C#/WINUI3/.NET6] NumberBox 클래스 : NumberFormatter 속성을 사용해 특정 값 단위로 반올림하는 포맷 설정하기

■ NumberBox 클래스의 NumberFormatter 속성을 사용해 특정 값 단위로 반올림하는 포맷을 설정하는 방법을 보여준다.

▶ MainPage.xaml


<?xml version="1.0" encoding="utf-8"?>
<Page x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <NumberBox Name="numberBox"
        HorizontalAlignment="Center"
        VerticalAlignment="Center"
        Header="Enter a dollar amount : "
        PlaceholderText="0.00" />
</Page>

<?xml version="1.0" encoding="utf-8"?>

<Page x:Class="TestProject.MainPage"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"

FontFamily="나눔고딕코딩"

FontSize="16">

<NumberBox Name="numberBox"

HorizontalAlignment="Center"

VerticalAlignment="Center"

Header="Enter a dollar amount : "

PlaceholderText="0.00" />

</Page>

▶ MainPage.xaml.cs


using Windows.Globalization.NumberFormatting;

using Microsoft.UI.Xaml.Controls;

namespace TestProject
{
    /// <summary>
    /// 메인 페이지
    /// </summary>
    public sealed partial class MainPage : Page
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainPage()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainPage()
        {
            InitializeComponent();

            IncrementNumberRounder incrementNumberRounder = new IncrementNumberRounder
            {
                Increment         = 0.25,
                RoundingAlgorithm = RoundingAlgorithm.RoundHalfUp
            };

            DecimalFormatter decimalFormatter = new DecimalFormatter
            {
                IntegerDigits  = 1,
                FractionDigits = 2,
                NumberRounder  = incrementNumberRounder
            };

            this.numberBox.NumberFormatter = decimalFormatter;
        }

        #endregion
    }
}

using Windows.Globalization.NumberFormatting;

using Microsoft.UI.Xaml.Controls;

namespace TestProject

{

/// <summary>

/// 메인 페이지

/// </summary>

public sealed partial class MainPage : Page

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 생성자 - MainPage()

/// <summary>

/// 생성자

/// </summary>

public MainPage()

{

InitializeComponent();

IncrementNumberRounder incrementNumberRounder = new IncrementNumberRounder

{

Increment = 0.25,

RoundingAlgorithm = RoundingAlgorithm.RoundHalfUp

};

DecimalFormatter decimalFormatter = new DecimalFormatter

{

IntegerDigits = 1,

FractionDigits = 2,

NumberRounder = incrementNumberRounder

};

this.numberBox.NumberFormatter = decimalFormatter;

}

#endregion

}

TestProject.zip