这篇博客将分享在WPF中如何创建一个带Title的TextBox。首先请看一下最终的效果,
实现思路:使用TextBlock+TextBox来实现,TextBlock用来显示Title。
实现代码,
TitleTextBox
[TemplatePart(Name = TitleTextBlockKey, Type = typeof(TextBlock))] public class TitleTextBox : TextBox { private const string TitleTextBlockKey = "PART_TitleTextBlock"; private TextBlock _tbkTitle; public static readonly DependencyProperty TitleProperty; public string Title { get { return (string)GetValue(TitleProperty); } set { SetValue(TitleProperty, value); } } static TitleTextBox() { DefaultStyleKeyProperty.OverrideMetadata(typeof(TitleTextBox), new FrameworkPropertyMetadata(typeof(TitleTextBox))); TitleProperty = DependencyProperty.Register("Title", typeof(string), typeof(TitleTextBox), new UIPropertyMetadata(new PropertyChangedCallback(TitlePropertyChangedCallback))); } private static void TitlePropertyChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e) { TitleTextBox ttb = d as TitleTextBox; if (ttb._tbkTitle != null) { ttb._tbkTitle.Text = (string)e.NewValue; } } public override void OnApplyTemplate() { base.OnApplyTemplate(); _tbkTitle = Template.FindName(TitleTextBlockKey, this) as TextBlock; _tbkTitle.Text = Title; } }
定义TitleTextBox样式,
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:WPFTitleTextBox.Resources.Styles" xmlns:uc="clr-namespace:WPFTitleTextBox"> <Style TargetType="{x:Type uc:TitleTextBox}"> <Setter Property="SnapsToDevicePixels" Value="True"/> <Setter Property="FontSize" Value="12"/> <Setter Property="Height" Value="28"/> <Setter Property="UndoLimit" Value="0"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type uc:TitleTextBox}"> <Border x:Name="OuterBorder" BorderBrush="#8b99bc" BorderThickness="1" CornerRadius="1" Background="#f7f7f7"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <TextBlock x:Name="PART_TitleTextBlock" Text="{Binding Title}" Foreground="#a7abb0" VerticalAlignment="Center" Margin="5,0"/> <Line Grid.Column="1" Stroke="#ccd1d7" StrokeDashArray="2,2" StrokeThickness="1.5" X1="0" Y1="0" X2="0" Y2="{TemplateBinding Height}" Margin="0,4"/> <Border Grid.Column="2" Background="White"> <ScrollViewer x:Name="PART_ContentHost" Margin="5,0" VerticalAlignment="Center" FontSize="14"/> </Border> </Grid> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> </ResourceDictionary>
在XAML中需要引用TitleTextBox。
<Grid> <StackPanel> <local:TitleTextBox Title="姓名" Width="270" Margin="5,10"/> <local:TitleTextBox Title="班级" Width="270"/> <local:TitleTextBox Title="专业" Width="270" Margin="5,10"/> </StackPanel> </Grid>
使用时设置一下Title即可。使用方式和普通TextBox一样。
以后如果遇到带Title的ComboBox,CheckBox等都可以参考上面的实现思路。
感谢您的阅读,代码点击这里下载。
时间: 2024-10-14 00:53:00