正文

C#自定义IP输入框控件

︶ㄣ米米素材网 メ
米米素材网V管理员 / 阅读
0708

这篇文章主要为大家详细介绍了C#自定义IP输入框控件，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

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：

C#自定义IP输入框控件

具体代码:

主窗口文件   Dialog.cs

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
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

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
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();
 
  }
}

SubIpInputBox.cs 文件

 

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Windows.Forms;
 
namespace IP
{
  public class SubIpInputBox:TextBox
  {
      /// <summary>
      /// 判断是否是子网掩码,false表示ip地址,true表示子网掩码
      /// </summary>
      private bool _isNetmask = false;
      private bool _isSendKey = false;
      private System.ComponentModel.IContainer components;
      private int _flag = 0;
 
      public int Flag
      {
        get { return _flag; }
        set { _flag = value; }
      }
 
      /// <summary>
      /// 
      /// </summary>
      public event FallBackEvent TextFallBackEvent;
 
 
      //定义事件函数
      public void FallBackEventFun(int flag)
      {
        if (TextFallBackEvent != null)
        {
          TextFallBackEvent(box, this.Flag);
        }
      }
 
      public bool IsNetmask
      {
        get { return _isNetmask; }
        set { _isNetmask = value; }
      }
 
      /// <summary>
      /// 构造函数
      /// </summary>
      public SubIpInputBox(bool isNetmask)
      {
        _isNetmask = isNetmask;
        box = new IpInputBox(_isNetmask);
        this.Font = new System.Drawing.Font(this.Font.Name, 11);
        this.BorderStyle = System.Windows.Forms.BorderStyle.None;//去掉边框
        this.TextAlign = HorizontalAlignment.Center;//字体居中
        this.Size = new System.Drawing.Size(30, 25);
        this.MaxLength = 3;
      }
 
      public SubIpInputBox(string str)
      {
        this.Text = str;
        this.Size = new System.Drawing.Size(30, 25);
        this.MaxLength = 3;
        this.BorderStyle = System.Windows.Forms.BorderStyle.None;//去掉边框
        this.TextAlign = HorizontalAlignment.Center;//字体居中
      }
 
      private IpInputBox box;
      public IpInputBox Box
      {
        get { return box; }
        set { box = value; }
      }
 
      protected override void OnKeyUp(KeyEventArgs e)
      {
        base.OnKeyUp(e);
 
 
        if (this.Text == "")
        {
          if (e.KeyCode.ToString() == "Back")
          {
            this.TextFallBackEvent += new FallBackEvent(box.FallBackEventFun);
            this.FallBackEventFun(this.Flag);
          }
        }
      }
      protected override void OnKeyPress(KeyPressEventArgs e)
      {
        base.OnKeyPress(e);
 
        //阻止从键盘输入键
        e.Handled = true;
 
 
        if ((e.KeyChar >= '0' && e.KeyChar <= '9') || (e.KeyChar == (char)8))
        {
 
          if ((e.KeyChar == (char)8))
          {
            e.Handled = false; return;
          }
          else
          {
            int len = this.Text.Length;
            if (len < 4)
            {
              if (len == 0 && e.KeyChar != '0')
              {
                e.Handled = false; return;
              }
              else if (len == 0)
              {
                if (this.Flag == 1 && this.IsNetmask == false)
                {
                  return;
                }
              }
              e.Handled = false; return;
            }
            else
            {
              // MessageBox.Show("编号最多只能输入3位数字！");
            }
          }
        }
        else if (e.KeyChar == '.')
        {
          //MessageBox.Show("编号只能输入数字！");
          if (this.Text.Length != 0)
          {
            // 如果输入 . 就执行 TAB 键 
            SendKeys.SendWait("{TAB}");
          }
        }
        else if (this._isSendKey)
        {
          this.SelectAll();
        }
 
      }
 
 
      protected override void OnTextChanged(EventArgs e)
      {
 
        try
        {
          string currentStr = this.Text;
          int currentNumber = Convert.ToInt32(currentStr);
          this.Text = currentNumber.ToString();
          this.SelectionStart = currentStr.Length;//设置光标在末尾
          if (_isNetmask == false)//表示ip地址
          {
 
            if (currentNumber > 223 || (currentNumber == 0 && this.Flag == 1))
            {
              MessageBox.Show("你输入的" + currentStr + "不是有效数值，请指定一个介于1到223之间的数值!", "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
 
              if (this.Flag == 1 && currentNumber == 0)
              {
                this.Text = "1";
              }
              else
              {
                this.Text = "223";
              }
              _isSendKey = true;
              this.Focus();
              this.SelectionStart = currentStr.Length;//设置光标在末尾
              this.SelectAll();
            }
            else
            {
              if (currentStr.Length == 3 && _isSendKey == false)
              {// 当输入的字符个数为3时，跳入另外一个输入框
                //MessageBox.Show("输入完毕");
                if (currentNumber == 0)
                {
                  this.Text = "";
                  MessageBox.Show("000");
                }
                SendKeys.SendWait("{TAB}");
              }
            }
 
          }
          else//子网掩码
          {
            if (currentNumber > 255)
            {
              MessageBox.Show("你输入的" + currentStr + "不是有效数值，请指定一个介于0到255之间的数值!", "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
              this.Text = "255";
              this.Focus();
              this.SelectionStart = currentStr.Length;//设置光标在末尾
              this.SelectAll();
            }
            else
            {
              if (currentStr.Length == 3 && _isSendKey == false)
              {// 当输入的字符个数为3时，跳入另外一个输入框
                //MessageBox.Show("输入完毕");
                SendKeys.SendWait("{TAB}");
 
              }
            }
          }
        }
        catch
        {
          // 异常处理
        }
      }
 
      private void InitializeComponent()
      {
        this.SuspendLayout();
        // 
        // SubIpInputBox
        // 
        this.TabIndexChanged += new System.EventHandler(this.SubTextBox_TabIndexChanged);
        this.ResumeLayout(false);
      }
      private void SubTextBox_TabIndexChanged(object sender, EventArgs e)
      {
 
      }
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持米米素材网。

原文链接：https://blog.csdn.net/taoerit/article/details/42535349