WPF 触摸屏小键盘样式

WPF程序，用于平板时，一些输入数量的地方我们需要弹出小键盘输入，这个键盘可以调系统的，也可以自己写。

分享个我现在用的一个数字键盘界面。

<Window xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors"  x:Class="NFMES.UI.Base.NumericKeyBoard"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      WindowStyle="None" Background="#FF333333" Title="NumericKeyBoard" ResizeMode="NoResize"
        Height="400" Width="300"   Deactivated="Window_Deactivated" FocusManager.FocusedElement="{Binding ElementName=btn}">
    <Window.Resources>
        <Style TargetType="{x:Type Button}">
            <Setter Property="FontSize" Value="35" />
            <Setter Property="Margin" Value="3"/>
        </Style>
    </Window.Resources>
    <Grid  FocusManager.FocusedElement="{Binding ElementName=btn}">
        <Grid.RowDefinitions>
            <RowDefinition Height="0.2*"/>
            <RowDefinition  Height="0.8*"/>
        </Grid.RowDefinitions>
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="2*"/>
                <ColumnDefinition Width="1*"/>
            </Grid.ColumnDefinitions>
            <dxe:TextEdit x:Name="txtValue" Background="DarkGray" BorderThickness="2" BorderBrush="Black" FontSize="30" HorizontalContentAlignment="Right"/>

            <Button Grid.Column="1" Click="Button_Click" >
                <!--<Button.Background>
                    <ImageBrush ImageSource="返回2.png" Stretch="Fill"/>
                </Button.Background>-->
                <Image Source="前进.png" />
            </Button>

        </Grid>

        <Grid Grid.Row="1" Button.Click="Grid_Click"   FocusManager.FocusedElement="{Binding ElementName=btn}">

            <Grid.RowDefinitions>

                <RowDefinition />
                <RowDefinition/>
                <RowDefinition/>
                <RowDefinition/>
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition />
                <ColumnDefinition />
                <ColumnDefinition />
            </Grid.ColumnDefinitions>
            <Button x:Name="btn" Content="1" />
            <Button Content="2" Grid.Row="0" Grid.Column="1"/>
            <Button Content="3" Grid.Row="0" Grid.Column="2"/>
            <Button Content="4" Grid.Row="1" Grid.Column="0"/>
            <Button Content="5" Grid.Row="1" Grid.Column="1"/>
            <Button Content="6" Grid.Row="1" Grid.Column="2"/>
            <Button Content="7" Grid.Row="2" Grid.Column="0"/>
            <Button Content="8" Grid.Row="2" Grid.Column="1"/>
            <Button Content="9" Grid.Row="2" Grid.Column="2"/>

            <Button Content="." Grid.Row="3" Grid.Column="0"/>
            <Button Content="0" Grid.Row="3" Grid.Column="1"/>
            <Button x:Name="Back"  Grid.Row="3" Grid.Column="2">
                <!--<Button.Background>
                    <ImageBrush ImageSource="返回1.png" Stretch="Fill"/>
                </Button.Background>-->
                <Image Source="返回1.png" />
            </Button>
        </Grid>
    </Grid>

</Window>

后台cs文件代码：

using DevExpress.Xpf.Editors;
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.Shapes;

namespace NFMES.UI.Base
{
    /// <summary>
    /// NumericKeyBoard.xaml 的交互逻辑
    /// </summary>
    public partial class NumericKeyBoard : Window
    {
        private static SpinEdit _SpinEdit;
        private static NumericKeyBoard _NumericKeyBoard;
        public NumericKeyBoard(SpinEdit spinEdit)
        {
            InitializeComponent();
            _SpinEdit = spinEdit;
        }

        private void Window_Deactivated(object sender, EventArgs e)
        {
           // this.Hide();
        }

        private void Grid_Click(object sender, RoutedEventArgs e)
        {
            try
            {

            Button btn = e.OriginalSource as Button;
            if (btn.Name == "Back")
            {
                txtValue.Text = txtValue.Text.Substring(, txtValue.Text.Length-);
            }
            else
            {
                txtValue.Text += btn.Content;
            }
            }
            catch
            {
            }
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            _SpinEdit.Text = (txtValue.Text.Length==?"":txtValue.Text);
            this.Close();
        }
    }
}

当然触摸屏上也可以直接调用系统键盘。

System.Diagnostics.Process.Start(@"C:\Windows\System32\osk.exe");

有时候因为权限问题，不可以直接调用系统盘下面的键盘。我们可以将osk.exe拷贝到程序根目录下再调用。