原文:UWP入门（八）--几个简单的控件

每天看几个，要不聊几天我就可以看完啦，加油！

看效果

1. CheckBox

      <TextBlock Grid.Row="0" Text="CheckBox" VerticalAlignment="Center" />

        <StackPanel Grid.Column="1"

                    Margin="20,10,0,10"

                    Orientation="Horizontal">

            <CheckBox Name="MyCheckBox"

                      Content="Agree?"

                      Tapped="MyCheckBox_Tapped" />

            <TextBlock Name="CheckBoxResultTextBlock" />

        </StackPanel>
  private void MyCheckBox_Tapped(object sender, TappedRoutedEventArgs e)

        {

            CheckBoxResultTextBlock.Text = MyCheckBox.IsChecked.ToString();

        }

2. RadioButton

 <TextBlock Grid.Row="2"

                   Text="RadioButton"

                   VerticalAlignment="Center" />

        <StackPanel Grid.Row="2"

                    Grid.Column="1"

                    Orientation="Horizontal"

                    Margin="20,10,0,10">

            <RadioButton Name="YesRadioButton"

                         Content="Yes"

                         GroupName="MyGroup"

                         Checked="RadioButton_Checked" />

            <RadioButton Name="NoRadioButton"

                         Content="No"

                         GroupName="MyGroup"

                         Checked="RadioButton_Checked" />

            <TextBlock Name="RadioButtonTextBlock" />

        </StackPanel>
 private void RadioButton_Checked(object sender, RoutedEventArgs e)

        {

            RadioButtonTextBlock.Text = (bool)YesRadioButton.IsChecked ? "Yes" : "No";

        }

3. CombomBox

 <TextBlock Grid.Row="3"

                   Text="ComboBox"

                   Name="MyComboBox"

                   VerticalAlignment="Center" />

        <StackPanel Orientation="Horizontal"

                    Grid.Row="3"

                    Grid.Column="1"

                    Margin="20,10,0,10">

            <ComboBox SelectionChanged="ComboBox_SelectionChanged" >

                <ComboBoxItem Content="Fourth" />

                <ComboBoxItem Content="Fifth" />

                <ComboBoxItem Content="Sixth" IsSelected="True" />

            </ComboBox>

            <TextBlock Name="ComboBoxResultTextBlock" />

        </StackPanel>
private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)

        {

            if (ComboBoxResultTextBlock == null) return;

            var combo = (ComboBox)sender;

            var item = (ComboBoxItem)combo.SelectedItem;

            ComboBoxResultTextBlock.Text = item.Content.ToString();

        }

4. ListBox

  <TextBlock Grid.Row="4" Text="ListBox" VerticalAlignment="Center" />

        <StackPanel Grid.Row="4" Grid.Column="1"  Margin="20,10,0,10">

            <ListBox Name="MyListBox"

                     SelectionMode="Multiple"

                     SelectionChanged="ListBox_SelectionChanged">

                <ListBoxItem Content="First" />

                <ListBoxItem Content="Second" />

                <ListBoxItem Content="Third" />

            </ListBox>

            <TextBlock Name="ListBoxResultTextBlock" />

        </StackPanel>
       private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)

        {

            var selectedItems = MyListBox.Items.Cast<ListBoxItem>()

                                  .Where(p => p.IsSelected)

                                    .Select(t => t.Content.ToString())

                                      .ToArray();

            ListBoxResultTextBlock.Text = string.Join(", ", selectedItems);

        }

5. image

 <TextBlock Grid.Row="5" Text="Image" VerticalAlignment="Center" />

        <Image Source="Assets/StoreLogo.png"

               HorizontalAlignment="Left"

               Width="250"

               Height="50"

               Grid.Row="5"

               Grid.Column="1"

               Stretch="Uniform"

               Margin="20,10,0,10" />

image 的四种拉伸方法

  • None

    • 不做任何处理，一般比较大
  • Fill
    • 占据所给的最大空间，比例会失调
  • Uniform
    • 按比例伸缩，占据所给的最大空间
  • UniformFill
    • 按比例伸缩，占据大小

6. 漂亮的 ToggleSwitch

<TextBlock Grid.Row="8"

                   Text="ToggleSwitch"

                   VerticalAlignment="Center" />

        <StackPanel Grid.Row="8"

                      Grid.Column="1"

                      Margin="20,10,0,10" >

            <ToggleSwitch>

                <ToggleSwitch.OffContent>

                    <TextBlock Text="I'm off right now." />

                </ToggleSwitch.OffContent>

                <ToggleSwitch.OnContent>

                    <TextBlock Text="I'm on!" />

                </ToggleSwitch.OnContent>

            </ToggleSwitch>

        </StackPanel>

不需要代码

7. ToggleButton

<TextBlock Grid.Row="7" Text="ToggleButton" VerticalAlignment="Center"  />

        <StackPanel Orientation="Horizontal"

                    Grid.Row="7"

                    Grid.Column="1"

                    Margin="20,10,0,10" >

            <ToggleButton Name="MyToggleButton"

                          Content="Premium Option"

                          IsThreeState="True"

                          Click="MyToggleButton_Click" />

            <TextBlock Name="ToggleButtonResultTextBlock" />

        </StackPanel>
 private void MyToggleButton_Click(object sender, RoutedEventArgs e)

        {

            ToggleButtonResultTextBlock.Text = MyToggleButton.IsChecked.ToString();

        }

代码

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" Margin="10,10,0,0">

        <Grid.RowDefinitions>

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

            <RowDefinition Height="Auto" />

        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>

            <ColumnDefinition Width="Auto" />

            <ColumnDefinition Width="*" />

        </Grid.ColumnDefinitions>

        <TextBlock Grid.Row="0" Text="CheckBox" VerticalAlignment="Center" />

        <StackPanel Grid.Column="1"

                    Margin="20,10,0,10"

                    Orientation="Horizontal">

            <CheckBox Name="MyCheckBox"

                      Content="Agree?"

                      Tapped="MyCheckBox_Tapped" />

            <TextBlock Name="CheckBoxResultTextBlock" />

        </StackPanel>

        <TextBlock Grid.Row="2"

                   Text="RadioButton"

                   VerticalAlignment="Center" />

        <StackPanel Grid.Row="2"

                    Grid.Column="1"

                    Orientation="Horizontal"

                    Margin="20,10,0,10">

            <RadioButton Name="YesRadioButton"

                         Content="Yes"

                         GroupName="MyGroup"

                         Checked="RadioButton_Checked" />

            <RadioButton Name="NoRadioButton"

                         Content="No"

                         GroupName="MyGroup"

                         Checked="RadioButton_Checked" />

            <TextBlock Name="RadioButtonTextBlock" />

        </StackPanel>

        <TextBlock Grid.Row="3"

                   Text="ComboBox"

                   Name="MyComboBox"

                   VerticalAlignment="Center" />

        <StackPanel Orientation="Horizontal"

                    Grid.Row="3"

                    Grid.Column="1"

                    Margin="20,10,0,10">

            <ComboBox SelectionChanged="ComboBox_SelectionChanged" >

                <ComboBoxItem Content="Fourth" />

                <ComboBoxItem Content="Fifth" />

                <ComboBoxItem Content="Sixth" IsSelected="True" />

            </ComboBox>

            <TextBlock Name="ComboBoxResultTextBlock" />

        </StackPanel>

        <TextBlock Grid.Row="4" Text="ListBox" VerticalAlignment="Center" />

        <StackPanel Grid.Row="4" Grid.Column="1"  Margin="20,10,0,10">

            <ListBox Name="MyListBox"

                     SelectionMode="Multiple"

                     SelectionChanged="ListBox_SelectionChanged">

                <ListBoxItem Content="First" />

                <ListBoxItem Content="Second" />

                <ListBoxItem Content="Third" />

            </ListBox>

            <TextBlock Name="ListBoxResultTextBlock" />

        </StackPanel>

        <TextBlock Grid.Row="5" Text="Image" VerticalAlignment="Center" />

        <Image Source="Assets/StoreLogo.png"

               HorizontalAlignment="Left"

               Width="250"

               Height="50"

               Grid.Row="5"

               Grid.Column="1"

               Stretch="Uniform"

               Margin="20,10,0,10" />

        <TextBlock Grid.Row="7" Text="ToggleButton" VerticalAlignment="Center"  />

        <StackPanel Orientation="Horizontal"

                    Grid.Row="7"

                    Grid.Column="1"

                    Margin="20,10,0,10" >

            <ToggleButton Name="MyToggleButton"

                          Content="Premium Option"

                          IsThreeState="True"

                          Click="MyToggleButton_Click" />

            <TextBlock Name="ToggleButtonResultTextBlock" />

        </StackPanel>

        <TextBlock Grid.Row="8"

                   Text="ToggleSwitch"

                   VerticalAlignment="Center" />

        <StackPanel Grid.Row="8"

                      Grid.Column="1"

                      Margin="20,10,0,10" >

            <ToggleSwitch>

                <ToggleSwitch.OffContent>

                    <TextBlock Text="I'm off right now." />

                </ToggleSwitch.OffContent>

                <ToggleSwitch.OnContent>

                    <TextBlock Text="I'm on!" />

                </ToggleSwitch.OnContent>

            </ToggleSwitch>

        </StackPanel>

    </Grid>

cs 代码

public sealed partial class MainPage : Page

    {

        public MainPage()

        {

            this.InitializeComponent();

        }

        private void MyCheckBox_Tapped(object sender, TappedRoutedEventArgs e)

        {

            CheckBoxResultTextBlock.Text = MyCheckBox.IsChecked.ToString();

        }

        private void RadioButton_Checked(object sender, RoutedEventArgs e)

        {

            RadioButtonTextBlock.Text = (bool)YesRadioButton.IsChecked ? "Yes" : "No";

        }

        private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)

        {

            if (ComboBoxResultTextBlock == null) return;

            var combo = (ComboBox)sender;

            var item = (ComboBoxItem)combo.SelectedItem;

            ComboBoxResultTextBlock.Text = item.Content.ToString();

        }

        private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)

        {

            var selectedItems = MyListBox.Items.Cast<ListBoxItem>()

                                  .Where(p => p.IsSelected)

                                    .Select(t => t.Content.ToString())

                                      .ToArray();

            ListBoxResultTextBlock.Text = string.Join(", ", selectedItems);

        }

        private void MyToggleButton_Click(object sender, RoutedEventArgs e)

        {

            ToggleButtonResultTextBlock.Text = MyToggleButton.IsChecked.ToString();

        }

    }

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