场景: 做一些网络设备应用时，需要有ip地址的输入，这就需要ip地址输入框控件
思路:
1 重写TextBox 为IpInputBox。
2 重写TextBox为SubIpInputBox
3 一个IpInputBox 添加4个SubIpInputBox 和3个Label
控件图：
具体代码:
主窗口文件 Dialog.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace IP
{
public delegate void FallBackEvent(IpInputBox box, int flag);
public partial class Dialog : Form
{
public Dialog()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
this.Controls.Add(ipBox);
ipBox.Location = new Point(10,10);
}
private IpInputBox ipBox = new IpInputBox(false);
}
}
IpInputBox.cs 文件
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
namespace IP
{
public class IpInputBox :TextBox
{
private bool _isNetmask = false;
public bool IsNetmask
{
get { return _isNetmask; }
set { _isNetmask = value; }
}
public IpInputBox(bool isNetmask)
{
_isNetmask = isNetmask;
this.Size = new System.Drawing.Size(150, 25);
_dotLabel1.Text = ".";
_dotLabel2.Text = ".";
_dotLabel3.Text = ".";
_dotLabel1.Size = new System.Drawing.Size(10, 25);
_dotLabel2.Size = new System.Drawing.Size(10, 25);
_dotLabel3.Size = new System.Drawing.Size(10, 25);
_box1.IsNetmask = _isNetmask;
_box2.IsNetmask = _isNetmask;
_box3.IsNetmask = _isNetmask;
_box4.IsNetmask = _isNetmask;
_box1.Flag = 1;
_box2.Flag = 2;
_box3.Flag = 3;
_box4.Flag = 4;
this.Controls.Add(_box1);
this.Controls.Add(_dotLabel1);
this.Controls.Add(_box2);
this.Controls.Add(_dotLabel2);
this.Controls.Add(_box3);
this.Controls.Add(_dotLabel3);
this.Controls.Add(_box4);
this.Font = new System.Drawing.Font(this.Font.Name, 11);
_box1.Location = new System.Drawing.Point(-1, 2);
_dotLabel1.Location = new System.Drawing.Point(29, 2);
_box2.Location = new System.Drawing.Point(39, 2);
_dotLabel2.Location = new System.Drawing.Point(69, 2);
_box3.Location = new System.Drawing.Point(79, 2);
_dotLabel3.Location = new System.Drawing.Point(109, 2);
_box4.Location = new System.Drawing.Point(119, 2);
_box1.Box = this;
_box2.Box = this;
_box3.Box = this;
_box4.Box = this;
}
public void FallBackEventFun(IpInputBox box, int flag)
{
switch (flag)
{
case 1:
_box1.Focus();
break;
case 2:
_box1.Focus();
break;
case 3:
_box2.Focus(); ;
break;
case 4:
_box3.Focus(); ;
break;
}
}
private string _ipAddress = string.Empty;
public void UpDateIpaddress()
{
try
{
string[] sArray = ipAddress.Split(new char[] { '.' });
_box1.Text = sArray[0];
_box2.Text = sArray[1];
_box3.Text = sArray[2];
_box4.Text = sArray[3];
}
catch (Exception exp)
{
MessageBox.Show("更新字符串失败:" + exp.Message);
}
}
/// <summary>
/// 获取ip地址
/// </summary>
public string IpAddressString
{
get
{
string _ipStr1 = _box1.Text;
string _ipStr2 = _box2.Text;
string _ipStr3 = _box3.Text;
string _ipStr4 = _box4.Text;
string _ipDotStr = ".";
_ipAddress = _ipStr1 + _ipDotStr + _ipStr2 + _ipDotStr + _ipStr3 + _ipDotStr + _ipStr4;
return _ipAddress;
}
set
{
_ipAddress = value;
}
}
private string ipAddress = string.Empty;
public string IpAddress
{
get { return ipAddress; }
set { ipAddress = value; }
}
private SubIpInputBox _box1 = new SubIpInputBox("");
private SubIpInputBox _box2 = new SubIpInputBox("");
private SubIpInputBox _box3 = new SubIpInputBox("");
private SubIpInputBox _box4 = new SubIpInputBox("");
private Label _dotLabel1 = new Label();
private Label _dotLabel2 = new Label();
private Label _dotLabel3 = new Label();
}
}
