■ TextBox 클래스에서 입력한 텍스트가 없는 경우 배경 이미지를 보여주는 방법을 보여준다.
▶ MainWindow.xaml
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 |
<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="800" Height="600" Title="TextBox 클래스 : 입력한 텍스트가 없는 경우 배경 이미지 보여주기" FontFamily="나눔고딕코딩" FontSize="16"> <Grid> <TextBox Name="textBox" Width="200" Height="25" VerticalContentAlignment="Center"> <TextBox.Background> <ImageBrush Stretch="None" AlignmentX="Left" ImageSource="IMAGE/background.gif" /> </TextBox.Background> </TextBox> </Grid> </Window> |
▶ MainWindow.xaml.cs
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 |
using System; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Media.Imaging; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); this.textBox.TextChanged += textBox_TextChanged; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 텍스트 박스 텍스트 변경시 처리하기 - textBox_TextChanged(sender, e) /// <summary> /// 텍스트 박스 텍스트 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void textBox_TextChanged(object sender, TextChangedEventArgs e) { if(this.textBox.Text == string.Empty) { Uri uri = GetResourceURI(null, "IMAGE/background.gif"); ImageBrush imageBrush = new ImageBrush(); imageBrush.Stretch = Stretch.None; imageBrush.AlignmentX = AlignmentX.Left; imageBrush.ImageSource = new BitmapImage(uri); this.textBox.Background = imageBrush; } else { this.textBox.Background = null; } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 리소스 URI 구하기 - GetResourceURI(assemblyName, resourcePath) /// <summary> /// 리소스 URI 구하기 /// </summary> /// <param name="assemblyName">어셈블리명</param> /// <param name="resourcePath">리소스 경로</param> /// <returns>리소스 URI</returns> private Uri GetResourceURI(string assemblyName, string resourcePath) { if(string.IsNullOrEmpty(assemblyName)) { return new Uri(string.Format("pack://application:,,,/{0}", resourcePath)); } else { return new Uri(string.Format("pack://application:,,,/{0};component/{1}", assemblyName, resourcePath)); } } #endregion } } |
