WPF Numeric控件在哪里？

Question

进入第一个严肃的WPF项目。似乎有很多基本的控件完全缺失了。具体地说，我正在寻找数字UpDown控件。有没有我错过的乐队外发行？真的不想写我自己的控件。

我不想使用WindowsFormHost并在其上绘制WinForm ctl。我希望它是完全的WPF没有任何遗留的垃圾。

谢谢

Answer 1

只需在Extended.Wpf.Toolkit中使用IntegerUpDown控件，就可以像这样使用它：

1. 将以下名称空间添加到您的XAML：

xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"

在要使用控件的XAML中使用

1. ：

<xctk:IntegerUpDown Name="myUpDownControl" />

Answer 2

我做了我自己的；

xaml

<Grid  Height="23" Margin="152,63,11,0" VerticalAlignment="Top">
    <TextBox x:Name="txtNum" x:FieldModifier="private" Text="0" TextChanged="txtNum_TextChanged" Margin="3,2,13,3" />
    <Button x:Name="cmdUp" x:FieldModifier="private" FontSize="10" Padding="0,-4,0,0" Content="▲" Width="10" Click="cmdUp_Click" Margin="33,2,1,13" />
    <Button x:Name="cmdDown" x:FieldModifier="private" FontSize="10" Padding="0,-4,0,0" Content="▼" Width="10" Click="cmdDown_Click" Margin="33,12,1,3" />
</Grid>

和后面的代码

private int _numValue = 0;

public int NumValue
{
    get {  return _numValue; }
    set
    {
        _numValue = value;
        txtNum.Text = value.ToString();
    }
}

public NumberUpDown()
{
    InitializeComponent();
    txtNum.Text = _numValue.ToString();
}

private void cmdUp_Click(object sender, RoutedEventArgs e)
{
    NumValue++;
}

private void cmdDown_Click(object sender, RoutedEventArgs e)
{
    NumValue--;
}

private void txtNum_TextChanged(object sender, TextChangedEventArgs e)
{
    if (txtNum == null)
    {
        return;
    }

    if (!int.TryParse(txtNum.Text, out _numValue))
        txtNum.Text = _numValue.ToString();
}

Answer 3

这是我自己的带有Up和Down键捕捉的UserControl的例子。

Xaml代码：

<Grid>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="13" />
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height="13" />
        <RowDefinition Height="13" />
    </Grid.RowDefinitions>
    <TextBox Name="NUDTextBox"  Grid.Column="0" Grid.Row="0" Grid.RowSpan="2" TextAlignment="Right" PreviewKeyDown="NUDTextBox_PreviewKeyDown" PreviewKeyUp="NUDTextBox_PreviewKeyUp" TextChanged="NUDTextBox_TextChanged"/>
    <RepeatButton Name="NUDButtonUP"  Grid.Column="1" Grid.Row="0" FontSize="8" FontFamily="Marlett" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" Click="NUDButtonUP_Click">5</RepeatButton>
    <RepeatButton Name="NUDButtonDown"  Grid.Column="1" Grid.Row="1" FontSize="8"  FontFamily="Marlett" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" Height="13" VerticalAlignment="Bottom" Click="NUDButtonDown_Click">6</RepeatButton>
</Grid>

和代码：

public partial class NumericUpDown : UserControl
{
    int minvalue = 0, 
        maxvalue = 100,
        startvalue = 10;
    public NumericUpDown()
    {
        InitializeComponent();
        NUDTextBox.Text = startvalue.ToString();
    }

    private void NUDButtonUP_Click(object sender, RoutedEventArgs e)
    {
        int number;
        if (NUDTextBox.Text != "") number = Convert.ToInt32(NUDTextBox.Text);
        else number = 0;
        if (number < maxvalue)
            NUDTextBox.Text = Convert.ToString(number + 1); 
    }

    private void NUDButtonDown_Click(object sender, RoutedEventArgs e)
    {
        int number;
        if (NUDTextBox.Text != "") number = Convert.ToInt32(NUDTextBox.Text);
        else number = 0;
        if (number > minvalue)
            NUDTextBox.Text = Convert.ToString(number - 1); 
    }

    private void NUDTextBox_PreviewKeyDown(object sender, KeyEventArgs e)
    {

        if (e.Key == Key.Up)
        {
            NUDButtonUP.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
            typeof(Button).GetMethod("set_IsPressed", BindingFlags.Instance | BindingFlags.NonPublic).Invoke(NUDButtonUP, new object[] { true }); 
        }


        if (e.Key == Key.Down)
        {
            NUDButtonDown.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
            typeof(Button).GetMethod("set_IsPressed", BindingFlags.Instance | BindingFlags.NonPublic).Invoke(NUDButtonDown, new object[] { true }); 
        }
    }

    private void NUDTextBox_PreviewKeyUp(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.Up)
            typeof(Button).GetMethod("set_IsPressed", BindingFlags.Instance | BindingFlags.NonPublic).Invoke(NUDButtonUP, new object[] { false });

        if (e.Key == Key.Down)
            typeof(Button).GetMethod("set_IsPressed", BindingFlags.Instance | BindingFlags.NonPublic).Invoke(NUDButtonDown, new object[] { false });
    }

    private void NUDTextBox_TextChanged(object sender, TextChangedEventArgs e)
    {
        int number = 0;
        if (NUDTextBox.Text!="")
            if (!int.TryParse(NUDTextBox.Text, out number)) NUDTextBox.Text = startvalue.ToString();
        if (number > maxvalue)  NUDTextBox.Text = maxvalue.ToString();
        if (number < minvalue) NUDTextBox.Text = minvalue.ToString();
        NUDTextBox.SelectionStart = NUDTextBox.Text.Length;

    }

}