■ x:DataType 속성을 DataTemplate 엘리먼트에서 사용하는 방법을 보여준다.
▶ NamedColor.cs
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using System.Reflection; namespace TestProject; /// <summary> /// 이름있는 색상 /// </summary> public class NamedColor { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 이름있는 색상 배열 /// </summary> private static NamedColor[] _namedColorArray; #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 명칭 /// </summary> private string name; /// <summary> /// 색상 /// </summary> private Color color; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 이름있는 색상 배열 - NamedColorArray /// <summary> /// 이름있는 색상 배열 /// </summary> public static NamedColor[] NamedColorArray { get { return _namedColorArray; } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Public #region 명칭 - Name /// <summary> /// 명칭 /// </summary> public string Name { get { string name = this.name[0].ToString(); for(int i = 1; i < this.name.Length; i++) { name += (char.IsUpper(this.name[i]) ? " " : "") + this.name[i].ToString(); } return name; } } #endregion #region 색상 - Color /// <summary> /// 색상 /// </summary> public Color Color { get { return this.color; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Static #region 생성자 - NamedColor() /// <summary> /// 생성자 /// </summary> static NamedColor() { FieldInfo[] fieldInfoArray = typeof(Colors).GetFields(BindingFlags.Static | BindingFlags.Public); _namedColorArray = new NamedColor[fieldInfoArray.Length]; for(int i = 0; i < fieldInfoArray.Length; i++) { _namedColorArray[i] = new NamedColor ( fieldInfoArray[i].Name, (Color)fieldInfoArray[i].GetValue(null) ); } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Private #region 생성자 - NamedColor(name, color) /// <summary> /// 생성자 /// </summary> /// <param name="name">명칭</param> /// <param name="color">색상</param> private NamedColor(string name, Color color) { this.name = name; this.color = color; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 문자열 구하기 - ToString() /// <summary> /// 문자열 구하기 /// </summary> /// <returns>문자열</returns> public override string ToString() { return this.name; } #endregion } |
▶ ColorToStringConverter.cs
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using System.Globalization; namespace TestProject; /// <summary> /// 색상→문자열 변환자 /// </summary> public class ColorToStringConverter : IValueConverter { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 변환하기 - (sourceValue, targetType, parameter, cultureInfo) /// <summary> /// 변환하기 /// </summary> /// <param name="sourceValue">소스 값</param> /// <param name="targetType">타겟 타입</param> /// <param name="parameter">매개 변수</param> /// <param name="cultureInfo">문화 정보</param> /// <returns>변환 값</returns> public object Convert(object sourceValue, Type targetType, object parameter, CultureInfo cultureInfo) { Color color = sourceValue as Color; if(color == null) { return null; } int alpha = (int)Math.Round(255 * color.Alpha); int red = (int)Math.Round(255 * color.Red ); int green = (int)Math.Round(255 * color.Green); int blue = (int)Math.Round(255 * color.Blue ); return $"{alpha:X2}:{red:X2}:{green:X2}:{blue:X2}"; } #endregion #region 역변환하기 - ConvertBack(sourceValue, targetType, parameter, cultureInfo) /// <summary> /// 역변환하기 /// </summary> /// <param name="sourceValue">소스 값</param> /// <param name="targetType">타겟 타입</param> /// <param name="parameter">매개 변수</param> /// <param name="cultureInfo">문화 정보</param> /// <returns>역변환 값</returns> /// <exception cref="NotImplementedException">미구현 예외</exception> public object ConvertBack(object sourceValue, Type targetType, object parameter, CultureInfo cultureInfo) { throw new NotImplementedException(); } #endregion } |
▶ MainPage.xaml
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<?xml version="1.0" encoding="utf-8" ?> <ContentPage x:Class="TestProject.MainPage" xmlns="http://schemas.microsoft.com/dotnet/2021/maui" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:local="clr-namespace:TestProject"> <ContentPage.Resources> <x:Double x:Key="BoxSizeKey">50</x:Double> <x:Int32 x:Key="RowHeightKey">60</x:Int32> <local:ColorToStringConverter x:Key="ColorToStringConverterKey" /> </ContentPage.Resources> <ListView RowHeight="{StaticResource RowHeightKey}" ItemsSource="{x:Static local:NamedColor.NamedColorArray}"> <ListView.ItemTemplate> <DataTemplate x:DataType="local:NamedColor"> <ViewCell> <StackLayout Orientation="Horizontal" Padding="5,5,0,5" Spacing="15"> <BoxView WidthRequest="{StaticResource BoxSizeKey}" HeightRequest="{StaticResource BoxSizeKey}" Color="{Binding Color}" /> <StackLayout VerticalOptions="Center" Padding="5,0,0,0"> <Label FontSize="Medium" FontAttributes="Bold" Text="{Binding Name}" /> <Label Text="{Binding Color, Converter={StaticResource ColorToStringConverterKey}}" /> </StackLayout> </StackLayout> </ViewCell> </DataTemplate> </ListView.ItemTemplate> </ListView> </ContentPage> |
