WPF标签到TextBox

Question

使用WPF中的TextBox显示文本标签(例如"Name")的最佳做法是什么？我想在TextBox上面有一个标签"Name"和许多类似的Labels/TextBoxes.我应该将Label/TextBox对放入垂直StackPanel吗？

有更简单的解决方案吗？

Answer 1

这实际上取决于您将来要对这些控件做些什么.如果你想多次重复使用这种控件(并且可能在运行中创建它),那么最好创建UserControl并对其进行编程.然后,您可以以非常简单的方式轻松地重用它(比如插入StackPanel).

LabelTextBox.xaml的代码

<UserControl x:Class="YourProject.LabelTextBox"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="49" d:DesignWidth="314" MinHeight="49" MaxHeight="49">
    <Grid>
        <Label Content="Label" Height="28" HorizontalAlignment="Left" Name="BaseLabel" VerticalAlignment="Top" />
        <TextBox Height="23" Margin="0,26,0,0" Name="BaseTextBox" VerticalAlignment="Top" />
    </Grid>
</UserControl>

LabelTextBox.xaml.cs的代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace YourProject
{
    /// <summary>
    /// Interaction logic for LabelTextBox.xaml
    /// </summary>
    public partial class LabelTextBox : UserControl
    {
        public LabelTextBox()
        {
            InitializeComponent();
        }



        string LocalLabel = "";
        string LocalTextBox = "";

        public string Label
        {
            get { return LocalLabel; }
            set
            {
                LocalLabel = value;
                BaseLabel.Content = value;
            }
        }

        public string TextBox
        {
            get { return LocalTextBox; }
            set
            {
                LocalTextBox = value;
                BaseTextBox.Text = value;
            }
        }
    }
}

您可以使用新控件的Label和TextBox属性更改Label文本和TextBox内容(隐藏在设计器中属性的"其他"部分中.您还可以为UserControl编写其他函数.

如果您不需要重复使用这些控件,其他解决方案就足够了.

Answer 2

这是一个控件:

using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;

public class KeyValueControl : Control
{
    public static readonly DependencyProperty KeyProperty = DependencyProperty.Register(
        "Key",
        typeof(string),
        typeof(KeyValueControl),
        new PropertyMetadata(default(string)));

    public static readonly DependencyProperty ValueProperty = DependencyProperty.Register(
        "Value",
        typeof(object),
        typeof(KeyValueControl),
        new FrameworkPropertyMetadata
        {
            DefaultValue = null,
            BindsTwoWayByDefault = true,
            DefaultUpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
        });

    static KeyValueControl()
    {
        DefaultStyleKeyProperty.OverrideMetadata(typeof(KeyValueControl), new FrameworkPropertyMetadata(typeof(KeyValueControl)));
    }

    public string Key
    {
        get
        {
            return (string)GetValue(KeyProperty);
        }
        set
        {
            SetValue(KeyProperty, value);
        }
    }

    public object Value
    {
        get
        {
            return GetValue(ValueProperty);
        }
        set
        {
            SetValue(ValueProperty, value);
        }
    }
}

样式:

<Style TargetType="{x:Type local:KeyValueControl}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type local:KeyValueControl}">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="100"/>
                        <ColumnDefinition/>
                    </Grid.ColumnDefinitions>
                    <TextBlock Text="{Binding Key, RelativeSource={RelativeSource TemplatedParent}}"/>
                    <TextBox Grid.Column="1" Text="{Binding Value, RelativeSource={RelativeSource TemplatedParent}, UpdateSourceTrigger=PropertyChanged}"/>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

用法(创建属性网格):

<ItemsControl>
    <customControls:KeyValueControl Key="First" Value="{Binding Value1}" />
    <customControls:KeyValueControl Key="Second" Value="{Binding Value2}" />
    <customControls:KeyValueControl Key="Last" Value="{Binding Value3}" />
    <customControls:KeyValueControl Key="Bool1" Value="{Binding Bool1}" Style="{StaticResource CheckBoxStyle}"/>
    <customControls:KeyValueControl Key="Bool2" Value="{Binding Bool2}" Style="{StaticResource CheckBoxStyle}"/>
</ItemsControl>