[WPF Tip] 쿼리 표현식을 이용한 검색(A query expression)

입력된 문자가 포함된 단어를 검색하는 프로그램.

2개의 ObservableCollection과 쿼리 표현식을 이용하여 쉽게 검색 기능 만드는 방법입니다.

 

 

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<Window x:Class="WPF_EXAMPLE_aQueryExpression.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        Title="MainWindow" Height="250" Width="300">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="1*"/>
            <ColumnDefinition Width="1*"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="1*"/>
        </Grid.RowDefinitions>
        
        <TextBox
            x:Name="tbText"
            Grid.Row="0" Grid.Column="0"
            Text="이"/>
        
        <Button
            x:Name="btnSearch"
            Grid.Row="0" Grid.Column="1"
            Content="검색" Click="BtnSearch_Click"/>
        
        <ListView 
            x:Name="lvResult" 
            Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2">
            <ListView.View>
                <GridView>
                    <GridViewColumn Header="Name" >
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <Label Content="{Binding}"/> 
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                </GridView>
            </ListView.View>
        </ListView>
    </Grid>
</Window>

 

---

 

using System.Collections.ObjectModel;
using System.Linq;
using System.Windows;

namespace WPF_EXAMPLE_aQueryExpression
{
    /// <summary>
    /// MainWindow.xaml에 대한 상호 작용 논리
    /// </summary>
    public partial class MainWindow : Window
    {
        private ObservableCollection<string> obData = new ObservableCollection<string>() { "당근", "오이", "수박", "토마토", "이이", "이만원", "가지", "오렌지", "지우개", "호박" };
        private ObservableCollection<string> obResult { get; set; }

        public MainWindow()
        {
            InitializeComponent();
        }

        private void BtnSearch_Click(object sender, RoutedEventArgs e)
        {
            if (tbText.Text.Length > 0)
            {
                //쿼리 표션식을 이용한 데이터 선택
                obResult = new ObservableCollection<string>(from s in obData where s.Contains(tbText.Text) select s);

                //ItemsSource와 연결
                lvResult.ItemsSource = obResult;
            }
        }
    }
}

 

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별 내용은 없지만 필요하신 분을 위해 샘플 첨부합니다.

 

WPF_EXAMPLE_aQueryExpression.zip

0.04MB