C# 数字键盘用户自定义控件

可以始终保持在最顶端的数字键盘

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace Paway.Windows.Forms
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
            this.numKeyBord1.TargetControl = this.textBox2;
            this.button1.Click += （sender e）=>{ this.numKeyBord1.Show（）; };
            //this.textBox2.LostFocus += （sender e） => { this.numKeyBord1.Hide（）; };
        }

    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-02-22 14:51  .vs\
     目录           0  2018-02-22 14:51  .vs\Paway.Windows.Forms\
     目录           0  2018-02-22 14:52  .vs\Paway.Windows.Forms\v15\
     文件       39936  2018-02-22 16:33  .vs\Paway.Windows.Forms\v15\.suo
     目录           0  2018-02-22 14:52  .vs\Paway.Windows.Forms\v15\Server\
     目录           0  2018-02-22 16:33  .vs\Paway.Windows.Forms\v15\Server\sqlite3\
     文件           0  2018-02-22 14:52  .vs\Paway.Windows.Forms\v15\Server\sqlite3\db.lock
     文件      991232  2018-02-22 16:33  .vs\Paway.Windows.Forms\v15\Server\sqlite3\storage.ide
     目录           0  2018-02-22 16:32  Paway.Windows.Forms\
     文件        1153  2018-02-22 14:52  Paway.Windows.Forms.sln
     文件         161  2018-02-22 14:52  Paway.Windows.Forms\app.config
     目录           0  2018-02-22 14:51  Paway.Windows.Forms\bin\
     目录           0  2018-02-22 15:54  Paway.Windows.Forms\bin\Debug\
     文件       15360  2018-02-22 16:32  Paway.Windows.Forms\bin\Debug\Paway.Windows.Forms.exe
     文件         161  2018-02-22 14:52  Paway.Windows.Forms\bin\Debug\Paway.Windows.Forms.exe.config
     文件       30208  2018-02-22 16:32  Paway.Windows.Forms\bin\Debug\Paway.Windows.Forms.pdb
     文件         577  2018-02-22 16:32  Paway.Windows.Forms\Form1.cs
     文件        3186  2018-02-22 16:32  Paway.Windows.Forms\Form1.Designer.cs
     文件        5817  2018-02-22 16:32  Paway.Windows.Forms\Form1.resx
     文件        3456  2018-02-22 16:31  Paway.Windows.Forms\NumKeyBord.cs
     文件       12443  2018-02-22 16:27  Paway.Windows.Forms\NumKeyBord.designer.cs
     文件        5817  2018-02-22 16:27  Paway.Windows.Forms\NumKeyBord.resx
     目录           0  2018-02-22 14:51  Paway.Windows.Forms\obj\
     目录           0  2018-02-22 16:32  Paway.Windows.Forms\obj\Debug\
     文件       17440  2018-02-22 16:31  Paway.Windows.Forms\obj\Debug\DesignTimeResolveAssemblyReferences.cache
     文件        6712  2018-02-22 16:05  Paway.Windows.Forms\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
     文件          42  2018-02-22 15:00  Paway.Windows.Forms\obj\Debug\Paway.Windows.Forms.csproj.CoreCompileInputs.cache
     文件        1370  2018-02-22 16:09  Paway.Windows.Forms\obj\Debug\Paway.Windows.Forms.csproj.FileListAbsolute.txt
     文件        1075  2018-02-22 16:32  Paway.Windows.Forms\obj\Debug\Paway.Windows.Forms.csproj.GenerateResource.Cache
     文件        1745  2018-02-22 15:54  Paway.Windows.Forms\obj\Debug\Paway.Windows.Forms.csprojResolveAssemblyReference.cache
     文件       15360  2018-02-22 16:32  Paway.Windows.Forms\obj\Debug\Paway.Windows.Forms.exe
............此处省略14个文件信息