脚本宝典收集整理的这篇文章主要介绍了WPF显示SQLITE数据(三)，脚本宝典觉得挺不错的，现在分享给大家，也给大家做个参考。
关于WPF的图片显示与事件冒泡
显示图片资源可以用
<Image Name="img_role" Loaded="img_role_Loaded" Stretch="None" MouseUp="SomethingClicked" />
并在代码中写入
1 PRivate void img_role_Loaded(object sender, RoutedEventargs e) 2 { 3 BITmapImage bi = new BitmapImage(); 4 bi.BeginInit(); 5 bi.UriSource = new Uri(@"Resources/Image/test.png", UriKind.RelativeOrAbsolute); 6 bi.EndInit(); 7 img_role.Source = bi; 8 }
其中图片test.png位于生成的net5.0-windows目录中
binDebugnet5.0-windowsResourcesImagetest.png
或者直接选择Image图像的属性编辑器，在Source属性中选择图片，会自动拷贝到bin目录下，我们在<Image Source="/test.png" ... /> 即可
下面是依据WPF编程宝典的事件冒泡做的效果：
<Window x:Class="routeevent.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" xmlns:local="clr-namespace:routeevent" mc:Ignorable="d" Title="MainWindow" Height="497" Width="870" MouseUp="SomethingClicked"> <Grid Margin="3" MouseUp="SomethingClicked"> <Grid.RowDefinitions> <RowDefinition Height="Auto"></RowDefinition> <RowDefinition Height="*"></RowDefinition> <RowDefinition Height="Auto"></RowDefinition> <RowDefinition Height="Auto"></RowDefinition> </Grid.RowDefinitions> <Label Margin="5,5,0,5" Grid.Row="0" HorizontalAlignment="Left" Background="AliceBlue" Borderbrush="Black" BorderThickness="1" MouseUp="SomethingClicked"> <StackPanel MouseUp="SomethingClicked"> <TextBlock Margin="3" MouseUp="SomethingClicked">Image and text label</TextBlock> <Image Stretch="UniformToFill" MouseUp="SomethingClicked" Source="/test.png" Height="21" Width="171" /> <TextBlock Margin="3" MouseUp="SomethingClicked">Courtesy of the StackPanel"</TextBlock> </StackPanel> </Label> <ListBox Grid.Row="1" Margin="5,5,5,5" Name="lstMessages" Grid.ColumnSpan="2"></ListBox> <CheckBox Grid.Row="2" Margin="5,5,5,5" Name="chkHandle" Grid.ColumnSpan="2"> Handle First event </CheckBox> <Button Grid.Row="2" Margin="787,21,0,5" Padding="3" HorizontalAlignment="Left" Name="cmdClear" Click="cmdClear_Click" Width="72" Grid.RowSpan="2">Clear List</Button> </Grid> </Window>
后台MainWindow.xaml.cs为
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6 using System.Windows; 7 using System.Windows.Controls; 8 using System.Windows.Data; 9 using System.Windows.Documents; 10 using System.Windows.Input; 11 using System.Windows.Media; 12 using System.Windows.Media.Imaging; 13 using System.Windows.Navigation; 14 using System.Windows.Shapes; 15 16 namespace routeevent 17 { 18 /// <summary> 19 /// Interaction LOGic for MainWindow.xaml 20 /// </summary> 21 public partial class MainWindow : Window 22 { 23 public MainWindow() 24 { 25 Initializecomponent(); 26 } 27 28 private void img_role_Loaded(object sender, RoutedEventArgs e) 29 { 30 //BitmapImage bi = new BitmapImage(); 31 //bi.BeginInit(); 32 //bi.UriSource = new Uri(@"Resources/Image/test.png", UriKind.RelativeOrAbsolute); 33 //bi.EndInit(); 34 ////MessageBox.Show(bi.Width.ToString()); 35 //img_role.Source = bi; 36 } 37 38 protected int eventCounter = 0; 39 private void SomethingClicked(object sender, MouseButtonEventArgs e) 40 { 41 eventCounter++; 42 string message = "#" + eventCounter.ToString() + ":rn" + 43 " Sender: " + sender.ToString() + "rn" + 44 " Source: " + e.Source + "rn" + 45 " Original Source: " + e.OriginalSource; 46 lstMessages.Items.Add(message); 47 e.Handled = (bool)chkHandle.IsChecked; 48 } 49 50 private void cmdClear_Click(object sender, RoutedEventArgs e) 51 { 52 lstMessages.Items.Clear(); 53 } 54 } 55 }
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