WPF仿Tabcontrol实现切换多个不同View
作者：wuty007
这篇文章主要为大家详细介绍了WPF如何模仿Tabcontrol实现切换多个不同View,文中的示例代码讲解详细,感兴趣的小伙伴可以跟随小编一起学习一下
在同一块区域显示不同的视图内容，直接使用Tabcontrol，可能要重写TabItem的控件模板，最直接的方法通过按钮的切换，控制一个ContentControl的Content值，实现切换不同的视图View。以下是一个简单的实现demo。注：如果用Prism的框架实现，只要设置Region的区域块显示，会更简单一些，至少不用自己实现。
1、ViewA：
<UserControl x:Class="test.viewA"
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"
xmlns:local="clr-namespace:test"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800">
<UserControl.Resources>
<SolidColorBrush x:Key="TabControlNormalBorderBrush" Color="#8C8E94"/>
<Style x:Key="TabControlStyle1" TargetType="{x:Type TabControl}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="Padding" Value="4,4,4,4"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="BorderBrush" Value="{StaticResource TabControlNormalBorderBrush}"/>
<Setter Property="Background" Value="#F9F9F9"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabControl}">
<Grid ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="ColumnDefinition0"/>
<ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition x:Name="RowDefinition0" Height="Auto"/>
<RowDefinition x:Name="RowDefinition1" Height="*"/>
</Grid.RowDefinitions>
<TabPanel x:Name="HeaderPanel" Grid.Column="0" IsItemsHost="true" Margin="2,2,2,0" Grid.Row="0" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1"/>
<Border x:Name="ContentPanel" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.Column="0" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" KeyboardNavigation.TabIndex="2" KeyboardNavigation.TabNavigation="Local">
<ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="TabStripPlacement" Value="Bottom">
<Setter Property="Grid.Row" TargetName="HeaderPanel" Value="1"/>
<Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>
<Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
<Setter Property="Height" TargetName="RowDefinition1" Value="Auto"/>
<Setter Property="Margin" TargetName="HeaderPanel" Value="2,0,2,2"/>
</Trigger>
<Trigger Property="TabStripPlacement" Value="Left">
<Setter Property="Grid.Row" TargetName="HeaderPanel" Value="0"/>
<Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>
<Setter Property="Grid.Column" TargetName="HeaderPanel" Value="0"/>
<Setter Property="Grid.Column" TargetName="ContentPanel" Value="1"/>
<Setter Property="Width" TargetName="ColumnDefinition0" Value="Auto"/>
<Setter Property="Width" TargetName="ColumnDefinition1" Value="*"/>
<Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
<Setter Property="Height" TargetName="RowDefinition1" Value="0"/>
<Setter Property="Margin" TargetName="HeaderPanel" Value="2,2,0,2"/>
</Trigger>
<Trigger Property="TabStripPlacement" Value="Right">
<Setter Property="Grid.Row" TargetName="HeaderPanel" Value="0"/>
<Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>
<Setter Property="Grid.Column" TargetName="HeaderPanel" Value="1"/>
<Setter Property="Grid.Column" TargetName="ContentPanel" Value="0"/>
<Setter Property="Width" TargetName="ColumnDefinition0" Value="*"/>
<Setter Property="Width" TargetName="ColumnDefinition1" Value="Auto"/>
<Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
<Setter Property="Height" TargetName="RowDefinition1" Value="0"/>
<Setter Property="Margin" TargetName="HeaderPanel" Value="0,2,2,2"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<UserControl.DataContext>
<local:viewAModel/>
</UserControl.DataContext>
<Grid>
<TextBlock Text="{Binding Text}" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="50"/>
</Grid>
</UserControl>ViewAViewModel：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace test
{
public class viewAModel:INotifyPropertyChanged
{
public viewAModel()
{
Text = "A";
}
public event PropertyChangedEventHandler PropertyChanged;
private void Change(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
private string text;
public string Text
{
get { return text; }
set
{
text = value;
Change("Text");
}
}
}
}ViewB：
<UserControl x:Class="test.viewB"
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"
xmlns:local="clr-namespace:test"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800">
<UserControl.DataContext>
<local:viewBModel/>
</UserControl.DataContext>
<Grid>
<TextBlock Text="{Binding Text}" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="50"/>
</Grid>
</UserControl>ViewBViewModel：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace test
{
public class viewBModel: INotifyPropertyChanged
{
public viewBModel()
{
Text = "ViewB";
}
public event PropertyChangedEventHandler PropertyChanged;
private void Change(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
private string text;
public string Text
{
get { return text; }
set
{
text = value;
Change("Text");
}
}
}
}在MainWindow切换ViewA和ViewB
<Window x:Class="test.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:test"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<StackPanel>
<Button Height="100" Width="100" Content="A" x:Name="A" Click="A_Click"/>
<Button Height="100" Width="100" Content="B" x:Name="B" Click="B_Click"/>
</StackPanel>
<ContentControl x:Name="content" Grid.Column="1">
<local:viewA/>
</ContentControl>
</Grid>
</Window>MainWindow.cs: 在初始化的时候，通过一个Dictionary，把要展示的View先加载出来，存到字典上，确保只Load一次view，在点击按钮切换ContentControl时，从字典中获取，减少每一次都new一个VIew，造成内存的泄露
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 test
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
FramworkElements["A"]=new viewA();
FramworkElements["B"]=new viewB();
}
private Dictionary<string, FrameworkElement> FramworkElements = new Dictionary<string, FrameworkElement>();
private void A_Click(object sender, RoutedEventArgs e)
{
content.Content = FramworkElements["A"];
}
private void B_Click(object sender, RoutedEventArgs e)
{
content.Content = FramworkElements["B"];
}
}
}展示的效果：
点击A按钮，切换A视图
点击B按钮，切换B视图：
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