Where is the WPF Numeric UpDown control?

Simply use the IntegerUpDown control in the Extended.Wpf.ToolkitYou can use it like this:

1. Add to your XAML the following namespace:

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

2. In your XAML where you want the control use:

   <xctk:IntegerUpDown Name="myUpDownControl" />

I made my own;

the 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>

and the code behind

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();}

This is example of my own UserControl with Up and Down key catching.

Xaml code:

<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>

And the code:

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;    }}