（三十四）c#Winform自定义控件-下拉框
作者：互联网
前提
入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。
开源地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
如果觉得写的还行，请点个 star 支持一下吧
欢迎前来交流探讨： 企鹅群568015492 
准备工作
此控件用到了停靠窗体和日期控件的一个面板，以及基类控件，如果你还对此不了解，请移步
开始
添加一个用户控件，命名UCComboBox，继承自UCControlBase
属性
1 Color _ForeColor = Color.FromArgb(64, 64, 64);
2 [Description("文字颜色"), Category("自定义")]
3 public override Color ForeColor
4 {
5 get
6 {
7 return _ForeColor;
8 }
9 set
10 {
11 _ForeColor = value;
12 lblInput.ForeColor = value;
13 txtInput.ForeColor = value;
14 }
15 }
16
17 public event EventHandler SelectedChangedEvent;
18 public event EventHandler TextChangedEvent;
19
20 private ComboBoxStyle _BoxStyle = ComboBoxStyle.DropDown;
21
22 [Description("控件样式"), Category("自定义")]
23 public ComboBoxStyle BoxStyle
24 {
25 get { return _BoxStyle; }
26 set
27 {
28 _BoxStyle = value;
29 if (value == ComboBoxStyle.DropDownList)
30 {
31 lblInput.Visible = true;
32 txtInput.Visible = false;
33 }
34 else
35 {
36 lblInput.Visible = false;
37 txtInput.Visible = true;
38 }
39
40 if (this._BoxStyle == ComboBoxStyle.DropDownList)
41 {
42 txtInput.BackColor = _BackColor;
43 base.FillColor = _BackColor;
44 base.RectColor = _BackColor;
45 }
46 else
47 {
48 txtInput.BackColor = Color.White;
49 base.FillColor = Color.White;
50 base.RectColor = Color.FromArgb(220, 220, 220);
51 }
52 }
53 }
54
55 private Font _Font = new Font("微软雅黑", 12);
56 [Description("字体"), Category("自定义")]
57 public new Font Font
58 {
59 get { return _Font; }
60 set
61 {
62 _Font = value;
63 lblInput.Font = value;
64 txtInput.Font = value;
65 txtInput.PromptFont = value;
66 this.txtInput.Location = new Point(this.txtInput.Location.X, (this.Height - txtInput.Height) / 2);
67 this.lblInput.Location = new Point(this.lblInput.Location.X, (this.Height - lblInput.Height) / 2);
68 }
69 }
70
71
72 [Obsolete("不再可用的属性")]
73 [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
74 private new Color FillColor
75 {
76 get;
77 set;
78 }
79
80 [Obsolete("不再可用的属性")]
81 [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
82 private new Color RectColor
83 {
84 get;
85 set;
86 }
87
88 private string _TextValue;
89
90 public string TextValue
91 {
92 get { return _TextValue; }
93 set
94 {
95 _TextValue = value;
96 if (lblInput.Text != value)
97 lblInput.Text = value;
98 if (txtInput.Text != value)
99 txtInput.Text = value;
100 }
101 }
102
103 private List<KeyValuePair<string, string>> _source = null;
104
105 public List<KeyValuePair<string, string>> Source
106 {
107 get { return _source; }
108 set
109 {
110 _source = value;
111 _selectedIndex = -1;
112 _selectedValue = "";
113 _selectedItem = new KeyValuePair<string, string>();
114 _selectedText = "";
115 lblInput.Text = "";
116 txtInput.Text = "";
117 }
118 }
119
120 private KeyValuePair<string, string> _selectedItem = new KeyValuePair<string, string>();
121
122 private int _selectedIndex = -1;
123
124 public int SelectedIndex
125 {
126 get
127 {
128 return _selectedIndex;
129 }
130 set
131 {
132 if (value < 0 || _source == null || _source.Count <= 0 || value >= _source.Count)
133 {
134 _selectedIndex = -1;
135 _selectedValue = "";
136 _selectedItem = new KeyValuePair<string, string>();
137 SelectedText = "";
138 }
139 else
140 {
141 _selectedIndex = value;
142 _selectedItem = _source[value];
143 _selectedValue = _source[value].Key;
144 SelectedText = _source[value].Value;
145 }
146 }
147 }
148
149 private string _selectedValue = "";
150
151 public string SelectedValue
152 {
153 get
154 {
155 return _selectedValue;
156 }
157 set
158 {
159 if (_source == null || _source.Count <= 0)
160 {
161 SelectedText = "";
162 _selectedValue = "";
163 _selectedIndex = -1;
164 _selectedItem = new KeyValuePair<string, string>();
165 }
166 else
167 {
168 for (int i = 0; i < _source.Count; i++)
169 {
170 if (_source[i].Key == value)
171 {
172 _selectedValue = value;
173 _selectedIndex = i;
174 _selectedItem = _source[i];
175 SelectedText = _source[i].Value;
176 return;
177 }
178 }
179 _selectedValue = "";
180 _selectedIndex = -1;
181 _selectedItem = new KeyValuePair<string, string>();
182 SelectedText = "";
183 }
184 }
185 }
186
187 private string _selectedText = "";
188
189 public string SelectedText
190 {
191 get { return _selectedText; }
192 private set
193 {
194 _selectedText = value;
195 lblInput.Text = _selectedText;
196 txtInput.Text = _selectedText;
197 if (SelectedChangedEvent != null)
198 {
199 SelectedChangedEvent(this, null);
200 }
201 }
202 }
203
204 private int _ItemWidth = 70;
205
206 public int ItemWidth
207 {
208 get { return _ItemWidth; }
209 set { _ItemWidth = value; }
210 }
211
212 private int _dropPanelHeight = -1;
213
214 public int DropPanelHeight
215 {
216 get { return _dropPanelHeight; }
217 set { _dropPanelHeight = value; }
218 }
219 [Obsolete("不再可用的属性,如需要改变背景色，请使用BackColorExt")]
220 [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
221 private new Color BackColor
222 {
223 get
224 {
225 return base.BackColor;
226 }
227 set
228 {
229 base.BackColor = Color.Transparent;
230 }
231 }
232
233 private Color _BackColor = Color.FromArgb(240, 240, 240);
234
235 public Color BackColorExt
236 {
237 get
238 {
239 return _BackColor;
240 }
241 set
242 {
243 if (value == Color.Transparent)
244 return;
245 _BackColor = value;
246 lblInput.BackColor = value;
247
248 if (this._BoxStyle == ComboBoxStyle.DropDownList)
249 {
250 txtInput.BackColor = value;
251 base.FillColor = value;
252 base.RectColor = value;
253 }
254 else
255 {
256 txtInput.BackColor = Color.White;
257 base.FillColor = Color.White;
258 base.RectColor = Color.FromArgb(220, 220, 220);
259 }
260 }
261 }
构造函数初始化处理
1 public UCComboBox()
2 {
3 InitializeComponent();
4 lblInput.BackColor = _BackColor;
5 if (this._BoxStyle == ComboBoxStyle.DropDownList)
6 {
7 txtInput.BackColor = _BackColor;
8 base.FillColor = _BackColor;
9 base.RectColor = _BackColor;
10 }
11 else
12 {
13 txtInput.BackColor = Color.White;
14 base.FillColor = Color.White;
15 base.RectColor = Color.FromArgb(220, 220, 220);
16 }
17 base.BackColor = Color.Transparent;
18 }
一些事件处理
1 private void UCComboBox_SizeChanged(object sender, EventArgs e)
2 {
3 this.txtInput.Location = new Point(this.txtInput.Location.X, (this.Height - txtInput.Height) / 2);
4 this.lblInput.Location = new Point(this.lblInput.Location.X, (this.Height - lblInput.Height) / 2);
5 }
6
7 private void txtInput_TextChanged(object sender, EventArgs e)
8 {
9 TextValue = txtInput.Text;
10 if (TextChangedEvent != null)
11 {
12 TextChangedEvent(this, null);
13 }
14 }
15
16 private void click_MouseDown(object sender, MouseEventArgs e)
17 {
18 if (_frmAnchor == null || _frmAnchor.IsDisposed || _frmAnchor.Visible == false)
19 {
20
21 if (this.Source != null && this.Source.Count > 0)
22 {
23 int intRow = 0;
24 int intCom = 1;
25 var p = this.PointToScreen(this.Location);
26 while (true)
27 {
28 int intScreenHeight = Screen.PrimaryScreen.Bounds.Height;
29 if ((p.Y + this.Height + this.Source.Count / intCom * 50 < intScreenHeight || p.Y - this.Source.Count / intCom * 50 > 0)
30 && (_dropPanelHeight <= 0 ? true : (this.Source.Count / intCom * 50 <= _dropPanelHeight)))
31 {
32 intRow = this.Source.Count / intCom + (this.Source.Count % intCom != 0 ? 1 : 0);
33 break;
34 }
35 intCom++;
36 }
37 UCTimePanel ucTime = new UCTimePanel();
38 ucTime.IsShowBorder = true;
39 int intWidth = this.Width / intCom;
40 if (intWidth < _ItemWidth)
41 intWidth = _ItemWidth;
42 Size size = new Size(intCom * intWidth, intRow * 50);
43 ucTime.Size = size;
44 ucTime.FirstEvent = true;
45 ucTime.SelectSourceEvent += ucTime_SelectSourceEvent;
46 ucTime.Row = intRow;
47 ucTime.Column = intCom;
48 List<KeyValuePair<string, string>> lst = new List<KeyValuePair<string, string>>();
49 foreach (var item in this.Source)
50 {
51 lst.Add(new KeyValuePair<string, string>(item.Key, item.Value));
52 }
53 ucTime.Source = lst;
54
55 ucTime.SetSelect(_selectedValue);
56
57 _frmAnchor = new Forms.FrmAnchor(this, ucTime);
58 _frmAnchor.Load += (a, b) => { (a as Form).Size = size; };
59
60 _frmAnchor.Show(this.FindForm());
61
62 }
63 }
64 else
65 {
66 _frmAnchor.Close();
67 }
68 }
69
70
71 Forms.FrmAnchor _frmAnchor;
72 void ucTime_SelectSourceEvent(object sender, EventArgs e)
73 {
74 if (_frmAnchor != null && !_frmAnchor.IsDisposed && _frmAnchor.Visible)
75 {
76 SelectedValue = sender.ToString();
77 _frmAnchor.Close();
78 }
79 }
80
81 private void UCComboBox_Load(object sender, EventArgs e)
82 {
83 if (this._BoxStyle == ComboBoxStyle.DropDownList)
84 {
85 txtInput.BackColor = _BackColor;
86 base.FillColor = _BackColor;
87 base.RectColor = _BackColor;
88 }
89 else
90 {
91 txtInput.BackColor = Color.White;
92 base.FillColor = Color.White;
93 base.RectColor = Color.FromArgb(220, 220, 220);
94 }
95
96 //if (this.Parent != null && BackColor == Color.Transparent)
97 }
98 }
99 }
完整代码如下
1 // 版权所有 黄正辉 交流群：568015492 QQ：623128629
2 // 文件名称：UCComboBox.cs
3 // 创建日期：2019-08-15 15:58:51
4 // 功能描述：ComboBox
5 // 项目地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
6 using System;
7 using System.Collections.Generic;
8 using System.ComponentModel;
9 using System.Drawing;
10 using System.Data;
11 using System.Linq;
12 using System.Text;
13 using System.Windows.Forms;
14
15 namespace HZH_Controls.Controls
16 {
17 [DefaultEvent("SelectedChangedEvent")]
18 public partial class UCComboBox : UCControlBase
19 {
20 Color _ForeColor = Color.FromArgb(64, 64, 64);
21 [Description("文字颜色"), Category("自定义")]
22 public override Color ForeColor
23 {
24 get
25 {
26 return _ForeColor;
27 }
28 set
29 {
30 _ForeColor = value;
31 lblInput.ForeColor = value;
32 txtInput.ForeColor = value;
33 }
34 }
35
36 public event EventHandler SelectedChangedEvent;
37 public event EventHandler TextChangedEvent;
38
39 private ComboBoxStyle _BoxStyle = ComboBoxStyle.DropDown;
40
41 [Description("控件样式"), Category("自定义")]
42 public ComboBoxStyle BoxStyle
43 {
44 get { return _BoxStyle; }
45 set
46 {
47 _BoxStyle = value;
48 if (value == ComboBoxStyle.DropDownList)
49 {
50 lblInput.Visible = true;
51 txtInput.Visible = false;
52 }
53 else
54 {
55 lblInput.Visible = false;
56 txtInput.Visible = true;
57 }
58
59 if (this._BoxStyle == ComboBoxStyle.DropDownList)
60 {
61 txtInput.BackColor = _BackColor;
62 base.FillColor = _BackColor;
63 base.RectColor = _BackColor;
64 }
65 else
66 {
67 txtInput.BackColor = Color.White;
68 base.FillColor = Color.White;
69 base.RectColor = Color.FromArgb(220, 220, 220);
70 }
71 }
72 }
73
74 private Font _Font = new Font("微软雅黑", 12);
75 [Description("字体"), Category("自定义")]
76 public new Font Font
77 {
78 get { return _Font; }
79 set
80 {
81 _Font = value;
82 lblInput.Font = value;
83 txtInput.Font = value;
84 txtInput.PromptFont = value;
85 this.txtInput.Location = new Point(this.txtInput.Location.X, (this.Height - txtInput.Height) / 2);
86 this.lblInput.Location = new Point(this.lblInput.Location.X, (this.Height - lblInput.Height) / 2);
87 }
88 }
89
90
91 [Obsolete("不再可用的属性")]
92 [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
93 private new Color FillColor
94 {
95 get;
96 set;
97 }
98
99 [Obsolete("不再可用的属性")]
100 [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
101 private new Color RectColor
102 {
103 get;
104 set;
105 }
106
107 private string _TextValue;
108
109 public string TextValue
110 {
111 get { return _TextValue; }
112 set
113 {
114 _TextValue = value;
115 if (lblInput.Text != value)
116 lblInput.Text = value;
117 if (txtInput.Text != value)
118 txtInput.Text = value;
119 }
120 }
121
122 private List<KeyValuePair<string, string>> _source = null;
123
124 public List<KeyValuePair<string, string>> Source
125 {
126 get { return _source; }
127 set
128 {
129 _source = value;
130 _selectedIndex = -1;
131 _selectedValue = "";
132 _selectedItem = new KeyValuePair<string, string>();
133 _selectedText = "";
134 lblInput.Text = "";
135 txtInput.Text = "";
136 }
137 }
138
139 private KeyValuePair<string, string> _selectedItem = new KeyValuePair<string, string>();
140
141 private int _selectedIndex = -1;
142
143 public int SelectedIndex
144 {
145 get
146 {
147 return _selectedIndex;
148 }
149 set
150 {
151 if (value < 0 || _source == null || _source.Count <= 0 || value >= _source.Count)
152 {
153 _selectedIndex = -1;
154 _selectedValue = "";
155 _selectedItem = new KeyValuePair<string, string>();
156 SelectedText = "";
157 }
158 else
159 {
160 _selectedIndex = value;
161 _selectedItem = _source[value];
162 _selectedValue = _source[value].Key;
163 SelectedText = _source[value].Value;
164 }
165 }
166 }
167
168 private string _selectedValue = "";
169
170 public string SelectedValue
171 {
172 get
173 {
174 return _selectedValue;
175 }
176 set
177 {
178 if (_source == null || _source.Count <= 0)
179 {
180 SelectedText = "";
181 _selectedValue = "";
182 _selectedIndex = -1;
183 _selectedItem = new KeyValuePair<string, string>();
184 }
185 else
186 {
187 for (int i = 0; i < _source.Count; i++)
188 {
189 if (_source[i].Key == value)
190 {
191 _selectedValue = value;
192 _selectedIndex = i;
193 _selectedItem = _source[i];
194 SelectedText = _source[i].Value;
195 return;
196 }
197 }
198 _selectedValue = "";
199 _selectedIndex = -1;
200 _selectedItem = new KeyValuePair<string, string>();
201 SelectedText = "";
202 }
203 }
204 }
205
206 private string _selectedText = "";
207
208 public string SelectedText
209 {
210 get { return _selectedText; }
211 private set
212 {
213 _selectedText = value;
214 lblInput.Text = _selectedText;
215 txtInput.Text = _selectedText;
216 if (SelectedChangedEvent != null)
217 {
218 SelectedChangedEvent(this, null);
219 }
220 }
221 }
222
223 private int _ItemWidth = 70;
224
225 public int ItemWidth
226 {
227 get { return _ItemWidth; }
228 set { _ItemWidth = value; }
229 }
230
231 private int _dropPanelHeight = -1;
232
233 public int DropPanelHeight
234 {
235 get { return _dropPanelHeight; }
236 set { _dropPanelHeight = value; }
237 }
238 [Obsolete("不再可用的属性,如需要改变背景色，请使用BackColorExt")]
239 [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
240 private new Color BackColor
241 {
242 get
243 {
244 return base.BackColor;
245 }
246 set
247 {
248 base.BackColor = Color.Transparent;
249 }
250 }
251
252 private Color _BackColor = Color.FromArgb(240, 240, 240);
253
254 public Color BackColorExt
255 {
256 get
257 {
258 return _BackColor;
259 }
260 set
261 {
262 if (value == Color.Transparent)
263 return;
264 _BackColor = value;
265 lblInput.BackColor = value;
266
267 if (this._BoxStyle == ComboBoxStyle.DropDownList)
268 {
269 txtInput.BackColor = value;
270 base.FillColor = value;
271 base.RectColor = value;
272 }
273 else
274 {
275 txtInput.BackColor = Color.White;
276 base.FillColor = Color.White;
277 base.RectColor = Color.FromArgb(220, 220, 220);
278 }
279 }
280 }
281
282 public UCComboBox()
283 {
284 InitializeComponent();
285 lblInput.BackColor = _BackColor;
286 if (this._BoxStyle == ComboBoxStyle.DropDownList)
287 {
288 txtInput.BackColor = _BackColor;
289 base.FillColor = _BackColor;
290 base.RectColor = _BackColor;
291 }
292 else
293 {
294 txtInput.BackColor = Color.White;
295 base.FillColor = Color.White;
296 base.RectColor = Color.FromArgb(220, 220, 220);
297 }
298 base.BackColor = Color.Transparent;
299 }
300
301 private void UCComboBox_SizeChanged(object sender, EventArgs e)
302 {
303 this.txtInput.Location = new Point(this.txtInput.Location.X, (this.Height - txtInput.Height) / 2);
304 this.lblInput.Location = new Point(this.lblInput.Location.X, (this.Height - lblInput.Height) / 2);
305 }
306
307 private void txtInput_TextChanged(object sender, EventArgs e)
308 {
309 TextValue = txtInput.Text;
310 if (TextChangedEvent != null)
311 {
312 TextChangedEvent(this, null);
313 }
314 }
315
316 private void click_MouseDown(object sender, MouseEventArgs e)
317 {
318 if (_frmAnchor == null || _frmAnchor.IsDisposed || _frmAnchor.Visible == false)
319 {
320
321 if (this.Source != null && this.Source.Count > 0)
322 {
323 int intRow = 0;
324 int intCom = 1;
325 var p = this.PointToScreen(this.Location);
326 while (true)
327 {
328 int intScreenHeight = Screen.PrimaryScreen.Bounds.Height;
329 if ((p.Y + this.Height + this.Source.Count / intCom * 50 < intScreenHeight || p.Y - this.Source.Count / intCom * 50 > 0)
330 && (_dropPanelHeight <= 0 ? true : (this.Source.Count / intCom * 50 <= _dropPanelHeight)))
331 {
332 intRow = this.Source.Count / intCom + (this.Source.Count % intCom != 0 ? 1 : 0);
333 break;
334 }
335 intCom++;
336 }
337 UCTimePanel ucTime = new UCTimePanel();
338 ucTime.IsShowBorder = true;
339 int intWidth = this.Width / intCom;
340 if (intWidth < _ItemWidth)
341 intWidth = _ItemWidth;
342 Size size = new Size(intCom * intWidth, intRow * 50);
343 ucTime.Size = size;
344 ucTime.FirstEvent = true;
345 ucTime.SelectSourceEvent += ucTime_SelectSourceEvent;
346 ucTime.Row = intRow;
347 ucTime.Column = intCom;
348 List<KeyValuePair<string, string>> lst = new List<KeyValuePair<string, string>>();
349 foreach (var item in this.Source)
350 {
351 lst.Add(new KeyValuePair<string, string>(item.Key, item.Value));
352 }
353 ucTime.Source = lst;
354
355 ucTime.SetSelect(_selectedValue);
356
357 _frmAnchor = new Forms.FrmAnchor(this, ucTime);
358 _frmAnchor.Load += (a, b) => { (a as Form).Size = size; };
359
360 _frmAnchor.Show(this.FindForm());
361
362 }
363 }
364 else
365 {
366 _frmAnchor.Close();
367 }
368 }
369
370
371 Forms.FrmAnchor _frmAnchor;
372 void ucTime_SelectSourceEvent(object sender, EventArgs e)
373 {
374 if (_frmAnchor != null && !_frmAnchor.IsDisposed && _frmAnchor.Visible)
375 {
376 SelectedValue = sender.ToString();
377 _frmAnchor.Close();
378 }
379 }
380
381 private void UCComboBox_Load(object sender, EventArgs e)
382 {
383 if (this._BoxStyle == ComboBoxStyle.DropDownList)
384 {
385 txtInput.BackColor = _BackColor;
386 base.FillColor = _BackColor;
387 base.RectColor = _BackColor;
388 }
389 else
390 {
391 txtInput.BackColor = Color.White;
392 base.FillColor = Color.White;
393 base.RectColor = Color.FromArgb(220, 220, 220);
394 }
395 }
396 }
397 }
View Code
1 namespace HZH_Controls.Controls
2 {
3 partial class UCComboBox
4 {
5 /// <summary>
6 /// 必需的设计器变量。
7 /// </summary>
8 private System.ComponentModel.IContainer components = null;
9
10 /// <summary>
11 /// 清理所有正在使用的资源。
12 /// </summary>
13 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
14 protected override void Dispose(bool disposing)
15 {
16 if (disposing && (components != null))
17 {
18 components.Dispose();
19 }
20 base.Dispose(disposing);
21 }
22
23 #region 组件设计器生成的代码
24
25 /// <summary>
26 /// 设计器支持所需的方法 - 不要
27 /// 使用代码编辑器修改此方法的内容。
28 /// </summary>
29 private void InitializeComponent()
30 {
31 this.panel1 = new System.Windows.Forms.Panel();
32 this.txtInput = new HZH_Controls.Controls.TextBoxEx();
33 this.lblInput = new System.Windows.Forms.Label();
34 this.SuspendLayout();
35 //
36 // panel1
37 //
38 this.panel1.BackColor = System.Drawing.Color.Transparent;
39 this.panel1.BackgroundImage = global::HZH_Controls.Properties.Resources.ComboBox;
40 this.panel1.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Center;
41 this.panel1.Dock = System.Windows.Forms.DockStyle.Right;
42 this.panel1.Location = new System.Drawing.Point(136, 0);
43 this.panel1.Name = "panel1";
44 this.panel1.Size = new System.Drawing.Size(37, 32);
45 this.panel1.TabIndex = 0;
46 this.panel1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.click_MouseDown);
47 //
48 // txtInput
49 //
50 this.txtInput.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));
51 this.txtInput.BackColor = System.Drawing.Color.White;
52 this.txtInput.BorderStyle = System.Windows.Forms.BorderStyle.None;
53 this.txtInput.DecLength = 2;
54 this.txtInput.Font = new System.Drawing.Font("微软雅黑", 18F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Pixel);
55 this.txtInput.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(64)))), ((int)(((byte)(64)))), ((int)(((byte)(64)))));
56 this.txtInput.InputType = TextInputType.NotControl;
57 this.txtInput.Location = new System.Drawing.Point(3, 4);
58 this.txtInput.Margin = new System.Windows.Forms.Padding(3, 3, 10, 3);
59 this.txtInput.MaxValue = new decimal(new int[] {
60 1000000,
61 0,
62 0,
63 0});
64 this.txtInput.MinValue = new decimal(new int[] {
65 1000000,
66 0,
67 0,
68 -2147483648});
69 this.txtInput.MyRectangle = new System.Drawing.Rectangle(0, 0, 0, 0);
70 this.txtInput.Name = "txtInput";
71 this.txtInput.OldText = null;
72 this.txtInput.PromptColor = System.Drawing.Color.Silver;
73 this.txtInput.PromptFont = new System.Drawing.Font("微软雅黑", 15F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Pixel);
74 this.txtInput.PromptText = "";
75 this.txtInput.RegexPattern = "";
76 this.txtInput.Size = new System.Drawing.Size(133, 24);
77 this.txtInput.TabIndex = 1;
78 this.txtInput.TextChanged += new System.EventHandler(this.txtInput_TextChanged);
79 //
80 // lblInput
81 //
82 this.lblInput.AutoSize = true;
83 this.lblInput.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(64)))), ((int)(((byte)(64)))), ((int)(((byte)(64)))));
84 this.lblInput.Location = new System.Drawing.Point(3, 6);
85 this.lblInput.Name = "lblInput";
86 this.lblInput.Size = new System.Drawing.Size(0, 20);
87 this.lblInput.TabIndex = 2;
88 this.lblInput.Visible = false;
89 this.lblInput.MouseDown += new System.Windows.Forms.MouseEventHandler(this.click_MouseDown);
90 //
91 // UCComboBox
92 //
93 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
94 this.BackColor = System.Drawing.Color.Transparent;
95 this.ConerRadius = 5;
96 this.Controls.Add(this.panel1);
97 this.Controls.Add(this.txtInput);
98 this.Controls.Add(this.lblInput);
99 this.FillColor = System.Drawing.Color.Gainsboro;
100 this.IsShowRect = true;
101 this.Name = "UCComboBox";
102 this.Size = new System.Drawing.Size(173, 32);
103 this.Load += new System.EventHandler(this.UCComboBox_Load);
104 this.SizeChanged += new System.EventHandler(this.UCComboBox_SizeChanged);
105 this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.click_MouseDown);
106 this.ResumeLayout(false);
107 this.PerformLayout();
108
109 }
110
111 #endregion
112
113 private System.Windows.Forms.Panel panel1;
114 public TextBoxEx txtInput;
115 private System.Windows.Forms.Label lblInput;
116 }
117 }
View Code
用处及效果
最后的话
如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星 星吧
标签：控件,自定义,Color,txtInput,System,value,BackColor,new,下拉框 来源： https://www.cnblogs.com/bfyx/p/11367395.html