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。
github：https://github.com/kwwwvagaa/netwinformcontrol
码云：
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nuget
install-package hzh_controls
目录
https://www.cnblogs.com/bfyx/p/11364884.html
用处及效果
准备工作
没什么准备的，就是组装控件
开始
添加一个用户控件ucnavigationmenuoffice
添加属性
1 /// <summary>
2 /// the main menu height
3 /// </summary>
4 private int mainmenuheight = 25;
5
6 /// <summary>
7 /// gets or sets the height of the main menu.
8 /// </summary>
9 /// <value>the height of the main menu.</value>
10 [description("主菜单高度，大于20的值"), category("自定义")]
11 public int mainmenuheight
12 {
13 get { return mainmenuheight; }
14 set
15 {
16 if (value < 20)
17 return;
18 mainmenuheight = value;
19 this.panmenu.height = value;
20 }
21 }
22 /// <summary>
23 /// the expand height
24 /// </summary>
25 private int expandheight = 125;
26 /// <summary>
27 /// gets or sets the height of the expand.
28 /// </summary>
29 /// <value>the height of the expand.</value>
30 [description("展开后高度"), category("自定义")]
31 public int expandheight
32 {
33 get { return expandheight; }
34 set { expandheight = value; }
35 }
36 /// <summary>
37 /// the is expand
38 /// </summary>
39 private bool isexpand = true;
40 /// <summary>
41 /// gets or sets a value indicating whether this instance is expand.
42 /// </summary>
43 /// <value><c>true</c> if this instance is expand; otherwise, <c>false</c>.</value>
44 [description("是否展开"), category("自定义")]
45 public bool isexpand
46 {
47 get { return isexpand; }
48 set
49 {
50 isexpand = value;
51 if (value)
52 {
53 this.height = expandheight;
54 resetchildcontrol();
55 }
56 else
57 {
58 this.height = this.panmenu.height;
59 this.panchilds.controls.clear();
60 }
61 }
62 }
63 /// <summary>
64 /// occurs when [click itemed].
65 /// </summary>
66 [description("点击节点事件"), category("自定义")]
67
68 public event eventhandler clickitemed;
69 /// <summary>
70 /// the select item
71 /// </summary>
72 private navigationmenuitemext selectitem = null;
73
74 /// <summary>
75 /// gets the select item.
76 /// </summary>
77 /// <value>the select item.</value>
78 [description("选中的节点"), category("自定义")]
79 public navigationmenuitemext selectitem
80 {
81 get { return selectitem; }
82 private set { selectitem = value; }
83 }
84
85 /// <summary>
86 /// the items
87 /// </summary>
88 navigationmenuitemext[] items;
89
90 /// <summary>
91 /// gets or sets the items.
92 /// </summary>
93 /// <value>the items.</value>
94 [description("节点列表"), category("自定义")]
95 public navigationmenuitemext[] items
96 {
97 get { return items; }
98 set
99 {
100 items = value;
101 reloadmenu();
102 if (value != null && value.length > 0)
103 {
104 selectitem = value[0];
105 resetchildcontrol();
106 }
107 }
108 }
109 /// <summary>
110 /// the tip color
111 /// </summary>
112 private color tipcolor = color.fromargb(255, 87, 34);
113
114 /// <summary>
115 /// gets or sets the color of the tip.
116 /// </summary>
117 /// <value>the color of the tip.</value>
118 [description("角标颜色"), category("自定义")]
119 public color tipcolor
120 {
121 get { return tipcolor; }
122 set { tipcolor = value; }
123 }
124
125 /// <summary>
126 /// 获取或设置控件的前景色。
127 /// </summary>
128 /// <value>the color of the fore.</value>
129 /// <permissionset>
130 /// <ipermission class="system.security.permissions.fileiopermission, mscorlib, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" unrestricted="true" />
131 /// </permissionset>
132 public override system.drawing.color forecolor
133 {
134 get
135 {
136 return base.forecolor;
137 }
138 set
139 {
140 base.forecolor = value;
141 foreach (control c in this.controls)
142 {
143 c.forecolor = value;
144 }
145 }
146 }
147 /// <summary>
148 /// 获取或设置控件显示的文字的字体。
149 /// </summary>
150 /// <value>the font.</value>
151 /// <permissionset>
152 /// <ipermission class="system.security.permissions.environmentpermission, mscorlib, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" unrestricted="true" />
153 /// <ipermission class="system.security.permissions.fileiopermission, mscorlib, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" unrestricted="true" />
154 /// <ipermission class="system.security.permissions.securitypermission, mscorlib, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" flags="unmanagedcode, controlevidence" />
155 /// <ipermission class="system.diagnostics.performancecounterpermission, system, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" unrestricted="true" />
156 /// </permissionset>
157 public override font font
158 {
159 get
160 {
161 return base.font;
162 }
163 set
164 {
165 base.font = value;
166 foreach (control c in this.controls)
167 {
168 c.font = value;
169 }
170 }
171 }
172
173 /// <summary>
174 /// the m lst anchors
175 /// </summary>
176 dictionary<navigationmenuitemext, frmanchor> m_lstanchors = new dictionary<navigationmenuitemext, frmanchor>();
一些事件及辅助函数，处理大小改变时候和重新加载以及鼠标对应处理
1 /// <summary>
2 /// handles the sizechanged event of the ucnavigationmenuoffice control.
3 /// </summary>
4 /// <param name="sender">the source of the event.</param>
5 /// <param name="e">the <see cref="eventargs"/> instance containing the event data.</param>
6 void ucnavigationmenuoffice_sizechanged(object sender, eventargs e)
7 {
8 if (isexpand)
9 {
10 expandheight = this.height;
11 }
12 }
13
14 /// <summary>
15 /// resets the child control.
16 /// </summary>
17 public void resetchildcontrol()
18 {
19 if (isexpand)
20 {
21 if (selectitem != null)
22 {
23 try
24 {
25 controlhelper.freezecontrol(this, true);
26 this.panchilds.controls.clear();
27 if (selectitem.showcontrol != null)
28 {
29 hzh_controls.controls.ucsplitline_h split = new ucsplitline_h();
30 split.backcolor = color.fromargb(50, 197, 197, 197);
31 split.dock = dockstyle.top;
32 this.panchilds.controls.add(split);
33 split.bringtofront();
34 this.panchilds.controls.add(selectitem.showcontrol);
35 selectitem.showcontrol.dock = dockstyle.fill;
36 }
37 }
38 finally
39 {
40 controlhelper.freezecontrol(this, false);
41 }
42 }
43 }
44 }
45
46
47 /// <summary>
48 /// reloads the menu.
49 /// </summary>
50 private void reloadmenu()
51 {
52 try
53 {
54 controlhelper.freezecontrol(this, true);
55 this.panmenu.controls.clear();
56 if (items != null && items.length > 0)
57 {
58 foreach (var item in items)
59 {
60 var menu = (navigationmenuitemext)item;
61 label lbl = new label();
62 lbl.autosize = false;
63 lbl.textalign = contentalignment.middlecenter;
64 lbl.width = menu.itemwidth;
65 lbl.text = menu.text;
66
67 lbl.font = font;
68 lbl.forecolor = forecolor;
69
70 lbl.paint += lbl_paint;
71 lbl.mouseenter += lbl_mouseenter;
72 lbl.tag = menu;
73 lbl.click += lbl_click;
74 lbl.doubleclick += lbl_doubleclick;
75 if (menu.anchorright)
76 {
77 lbl.dock = dockstyle.right;
78 }
79 else
80 {
81 lbl.dock = dockstyle.left;
82 }
83 this.panmenu.controls.add(lbl);
84
85 lbl.bringtofront();
86 }
87 }
88 }
89 finally
90 {
91 controlhelper.freezecontrol(this, false);
92 }
93 }
94
95 /// <summary>
96 /// handles the doubleclick event of the lbl control.
97 /// </summary>
98 /// <param name="sender">the source of the event.</param>
99 /// <param name="e">the <see cref="eventargs"/> instance containing the event data.</param>
100 void lbl_doubleclick(object sender, eventargs e)
101 {
102 isexpand = !isexpand;
103 }
104 /// <summary>
105 /// handles the click event of the lbl control.
106 /// </summary>
107 /// <param name="sender">the source of the event.</param>
108 /// <param name="e">the <see cref="eventargs" /> instance containing the event data.</param>
109 void lbl_click(object sender, eventargs e)
110 {
111 label lbl = sender as label;
112 if (lbl.tag != null)
113 {
114 var menu = (navigationmenuitemext)lbl.tag;
115 if (menu.showcontrol == null)
116 {
117 selectitem = menu;
118
119 if (clickitemed != null)
120 {
121 clickitemed(this, e);
122 }
123 }
124 else
125 {
126 if (isexpand)
127 {
128 selectitem = menu;
129 resetchildcontrol();
130 }
131 }
132 }
133 }
134 /// <summary>
135 /// handles the mouseenter event of the lbl control.
136 /// </summary>
137 /// <param name="sender">the source of the event.</param>
138 /// <param name="e">the <see cref="eventargs" /> instance containing the event data.</param>
139 void lbl_mouseenter(object sender, eventargs e)
140 {
141 if (!isexpand)
142 {
143 label lbl = sender as label;
144 var menu = lbl.tag as navigationmenuitemext;
145 foreach (var item in m_lstanchors)
146 {
147 m_lstanchors[item.key].hide();
148 }
149 if (menu.showcontrol != null)
150 {
151 if (!m_lstanchors.containskey(menu))
152 {
153 m_lstanchors[menu] = new frmanchor(panmenu, menu.showcontrol, isnotfocus: false);
154
155 }
156 m_lstanchors[menu].backcolor = this.backcolor;
157 m_lstanchors[menu].show(this);
158 m_lstanchors[menu].size = new size(this.panchilds.width, expandheight - mainmenuheight);
159 }
160 }
161 }
162 /// <summary>
163 /// handles the paint event of the lbl control.
164 /// </summary>
165 /// <param name="sender">the source of the event.</param>
166 /// <param name="e">the <see cref="painteventargs" /> instance containing the event data.</param>
167 void lbl_paint(object sender, painteventargs e)
168 {
169 label lbl = sender as label;
170 if (lbl.tag != null)
171 {
172 var menu = (navigationmenuitemext)lbl.tag;
173 e.graphics.setgdihigh();
174
175 if (menu.showtip)
176 {
177 if (!string.isnullorempty(menu.tiptext))
178 {
179 var rect = new rectangle(lbl.width - 25, lbl.height / 2 - 10, 20, 20);
180 var path = rect.createroundedrectanglepath(5);
181 e.graphics.fillpath(new solidbrush(tipcolor), path);
182 e.graphics.drawstring(menu.tiptext, new font("微软雅黑", 8f), new solidbrush(color.white), rect, new stringformat() { alignment = stringalignment.center, linealignment = stringalignment.center });
183 }
184 else
185 {
186 e.graphics.fillellipse(new solidbrush(tipcolor), new rectangle(lbl.width - 20, lbl.height / 2 - 10, 10, 10));
187 }
188 }
189 if (menu.icon != null)
190 {
191 e.graphics.drawimage(menu.icon, new rectangle(1, (lbl.height - 25) / 2, 25, 25), 0, 0, menu.icon.width, menu.icon.height, graphicsunit.pixel);
192 }
193 }
194 }
完整代码
1 // ***********************************************************************
2 // assembly : hzh_controls
3 // created : 2019-10-12
4 //
5 // ***********************************************************************
6 // <copyright file="ucnavigationmenuoffice.cs">
7 // copyright by huang zhenghui(黄正辉) all, qq group:568015492 qq:623128629 email:623128629@qq.com
8 // </copyright>
9 //
10 // blog: https://www.cnblogs.com/bfyx
11 // github：https://github.com/kwwwvagaa/netwinformcontrol
12 // gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
13 //
14 // if you use this code, please keep this note.
15 // ***********************************************************************
16 using system;
17 using system.collections.generic;
18 using system.componentmodel;
19 using system.drawing;
20 using system.data;
21 using system.linq;
22 using system.text;
23 using system.windows.forms;
24 using hzh_controls.forms;
25
26 namespace hzh_controls.controls
27 {
28 /// <summary>
29 /// class ucnavigationmenuoffice.
30 /// implements the <see cref="system.windows.forms.usercontrol" />
31 /// </summary>
32 /// <seealso cref="system.windows.forms.usercontrol" />
33 public partial class ucnavigationmenuoffice : usercontrol
34 {
35 /// <summary>
36 /// the main menu height
37 /// </summary>
38 private int mainmenuheight = 25;
39
40 /// <summary>
41 /// gets or sets the height of the main menu.
42 /// </summary>
43 /// <value>the height of the main menu.</value>
44 [description("主菜单高度，大于20的值"), category("自定义")]
45 public int mainmenuheight
46 {
47 get { return mainmenuheight; }
48 set
49 {
50 if (value < 20)
51 return;
52 mainmenuheight = value;
53 this.panmenu.height = value;
54 }
55 }
56 /// <summary>
57 /// the expand height
58 /// </summary>
59 private int expandheight = 125;
60 /// <summary>
61 /// gets or sets the height of the expand.
62 /// </summary>
63 /// <value>the height of the expand.</value>
64 [description("展开后高度"), category("自定义")]
65 public int expandheight
66 {
67 get { return expandheight; }
68 set { expandheight = value; }
69 }
70 /// <summary>
71 /// the is expand
72 /// </summary>
73 private bool isexpand = true;
74 /// <summary>
75 /// gets or sets a value indicating whether this instance is expand.
76 /// </summary>
77 /// <value><c>true</c> if this instance is expand; otherwise, <c>false</c>.</value>
78 [description("是否展开"), category("自定义")]
79 public bool isexpand
80 {
81 get { return isexpand; }
82 set
83 {
84 isexpand = value;
85 if (value)
86 {
87 this.height = expandheight;
88 resetchildcontrol();
89 }
90 else
91 {
92 this.height = this.panmenu.height;
93 this.panchilds.controls.clear();
94 }
95 }
96 }
97 /// <summary>
98 /// occurs when [click itemed].
99 /// </summary>
100 [description("点击节点事件"), category("自定义")]
101
102 public event eventhandler clickitemed;
103 /// <summary>
104 /// the select item
105 /// </summary>
106 private navigationmenuitemext selectitem = null;
107
108 /// <summary>
109 /// gets the select item.
110 /// </summary>
111 /// <value>the select item.</value>
112 [description("选中的节点"), category("自定义")]
113 public navigationmenuitemext selectitem
114 {
115 get { return selectitem; }
116 private set { selectitem = value; }
117 }
118
119 /// <summary>
120 /// the items
121 /// </summary>
122 navigationmenuitemext[] items;
123
124 /// <summary>
125 /// gets or sets the items.
126 /// </summary>
127 /// <value>the items.</value>
128 [description("节点列表"), category("自定义")]
129 public navigationmenuitemext[] items
130 {
131 get { return items; }
132 set
133 {
134 items = value;
135 reloadmenu();
136 if (value != null && value.length > 0)
137 {
138 selectitem = value[0];
139 resetchildcontrol();
140 }
141 }
142 }
143 /// <summary>
144 /// the tip color
145 /// </summary>
146 private color tipcolor = color.fromargb(255, 87, 34);
147
148 /// <summary>
149 /// gets or sets the color of the tip.
150 /// </summary>
151 /// <value>the color of the tip.</value>
152 [description("角标颜色"), category("自定义")]
153 public color tipcolor
154 {
155 get { return tipcolor; }
156 set { tipcolor = value; }
157 }
158
159 /// <summary>
160 /// 获取或设置控件的前景色。
161 /// </summary>
162 /// <value>the color of the fore.</value>
163 /// <permissionset>
164 /// <ipermission class="system.security.permissions.fileiopermission, mscorlib, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" unrestricted="true" />
165 /// </permissionset>
166 public override system.drawing.color forecolor
167 {
168 get
169 {
170 return base.forecolor;
171 }
172 set
173 {
174 base.forecolor = value;
175 foreach (control c in this.controls)
176 {
177 c.forecolor = value;
178 }
179 }
180 }
181 /// <summary>
182 /// 获取或设置控件显示的文字的字体。
183 /// </summary>
184 /// <value>the font.</value>
185 /// <permissionset>
186 /// <ipermission class="system.security.permissions.environmentpermission, mscorlib, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" unrestricted="true" />
187 /// <ipermission class="system.security.permissions.fileiopermission, mscorlib, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" unrestricted="true" />
188 /// <ipermission class="system.security.permissions.securitypermission, mscorlib, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" flags="unmanagedcode, controlevidence" />
189 /// <ipermission class="system.diagnostics.performancecounterpermission, system, version=2.0.3600.0, culture=neutral, publickeytoken=b77a5c561934e089" version="1" unrestricted="true" />
190 /// </permissionset>
191 public override font font
192 {
193 get
194 {
195 return base.font;
196 }
197 set
198 {
199 base.font = value;
200 foreach (control c in this.controls)
201 {
202 c.font = value;
203 }
204 }
205 }
206
207 /// <summary>
208 /// the m lst anchors
209 /// </summary>
210 dictionary<navigationmenuitemext, frmanchor> m_lstanchors = new dictionary<navigationmenuitemext, frmanchor>();
211 /// <summary>
212 /// initializes a new instance of the <see cref="ucnavigationmenuoffice"/> class.
213 /// </summary>
214 public ucnavigationmenuoffice()
215 {
216 initializecomponent();
217 this.sizechanged += ucnavigationmenuoffice_sizechanged;
218 items = new navigationmenuitemext[0];
219 if (controlhelper.isdesignmode())
220 {
221 items = new navigationmenuitemext[4];
222 for (int i = 0; i < 4; i++)
223 {
224 items[i] = new navigationmenuitemext()
225 {
226 text = "菜单" + (i + 1),
227 anchorright = i >= 2
228 };
229 }
230 }
231 }
232
233 /// <summary>
234 /// handles the sizechanged event of the ucnavigationmenuoffice control.
235 /// </summary>
236 /// <param name="sender">the source of the event.</param>
237 /// <param name="e">the <see cref="eventargs"/> instance containing the event data.</param>
238 void ucnavigationmenuoffice_sizechanged(object sender, eventargs e)
239 {
240 if (isexpand)
241 {
242 expandheight = this.height;
243 }
244 }
245
246 /// <summary>
247 /// resets the child control.
248 /// </summary>
249 public void resetchildcontrol()
250 {
251 if (isexpand)
252 {
253 if (selectitem != null)
254 {
255 try
256 {
257 controlhelper.freezecontrol(this, true);
258 this.panchilds.controls.clear();
259 if (selectitem.showcontrol != null)
260 {
261 hzh_controls.controls.ucsplitline_h split = new ucsplitline_h();
262 split.backcolor = color.fromargb(50, 197, 197, 197);
263 split.dock = dockstyle.top;
264 this.panchilds.controls.add(split);
265 split.bringtofront();
266 this.panchilds.controls.add(selectitem.showcontrol);
267 selectitem.showcontrol.dock = dockstyle.fill;
268 }
269 }
270 finally
271 {
272 controlhelper.freezecontrol(this, false);
273 }
274 }
275 }
276 }
277
278
279 /// <summary>
280 /// reloads the menu.
281 /// </summary>
282 private void reloadmenu()
283 {
284 try
285 {
286 controlhelper.freezecontrol(this, true);
287 this.panmenu.controls.clear();
288 if (items != null && items.length > 0)
289 {
290 foreach (var item in items)
291 {
292 var menu = (navigationmenuitemext)item;
293 label lbl = new label();
294 lbl.autosize = false;
295 lbl.textalign = contentalignment.middlecenter;
296 lbl.width = menu.itemwidth;
297 lbl.text = menu.text;
298
299 lbl.font = font;
300 lbl.forecolor = forecolor;
301
302 lbl.paint += lbl_paint;
303 lbl.mouseenter += lbl_mouseenter;
304 lbl.tag = menu;
305 lbl.click += lbl_click;
306 lbl.doubleclick += lbl_doubleclick;
307 if (menu.anchorright)
308 {
309 lbl.dock = dockstyle.right;
310 }
311 else
312 {
313 lbl.dock = dockstyle.left;
314 }
315 this.panmenu.controls.add(lbl);
316
317 lbl.bringtofront();
318 }
319 }
320 }
321 finally
322 {
323 controlhelper.freezecontrol(this, false);
324 }
325 }
326
327 /// <summary>
328 /// handles the doubleclick event of the lbl control.
329 /// </summary>
330 /// <param name="sender">the source of the event.</param>
331 /// <param name="e">the <see cref="eventargs"/> instance containing the event data.</param>
332 void lbl_doubleclick(object sender, eventargs e)
333 {
334 isexpand = !isexpand;
335 }
336 /// <summary>
337 /// handles the click event of the lbl control.
338 /// </summary>
339 /// <param name="sender">the source of the event.</param>
340 /// <param name="e">the <see cref="eventargs" /> instance containing the event data.</param>
341 void lbl_click(object sender, eventargs e)
342 {
343 label lbl = sender as label;
344 if (lbl.tag != null)
345 {
346 var menu = (navigationmenuitemext)lbl.tag;
347 if (menu.showcontrol == null)
348 {
349 selectitem = menu;
350
351 if (clickitemed != null)
352 {
353 clickitemed(this, e);
354 }
355 }
356 else
357 {
358 if (isexpand)
359 {
360 selectitem = menu;
361 resetchildcontrol();
362 }
363 }
364 }
365 }
366 /// <summary>
367 /// handles the mouseenter event of the lbl control.
368 /// </summary>
369 /// <param name="sender">the source of the event.</param>
370 /// <param name="e">the <see cref="eventargs" /> instance containing the event data.</param>
371 void lbl_mouseenter(object sender, eventargs e)
372 {
373 if (!isexpand)
374 {
375 label lbl = sender as label;
376 var menu = lbl.tag as navigationmenuitemext;
377 foreach (var item in m_lstanchors)
378 {
379 m_lstanchors[item.key].hide();
380 }
381 if (menu.showcontrol != null)
382 {
383 if (!m_lstanchors.containskey(menu))
384 {
385 m_lstanchors[menu] = new frmanchor(panmenu, menu.showcontrol, isnotfocus: false);
386
387 }
388 m_lstanchors[menu].backcolor = this.backcolor;
389 m_lstanchors[menu].show(this);
390 m_lstanchors[menu].size = new size(this.panchilds.width, expandheight - mainmenuheight);
391 }
392 }
393 }
394 /// <summary>
395 /// handles the paint event of the lbl control.
396 /// </summary>
397 /// <param name="sender">the source of the event.</param>
398 /// <param name="e">the <see cref="painteventargs" /> instance containing the event data.</param>
399 void lbl_paint(object sender, painteventargs e)
400 {
401 label lbl = sender as label;
402 if (lbl.tag != null)
403 {
404 var menu = (navigationmenuitemext)lbl.tag;
405 e.graphics.setgdihigh();
406
407 if (menu.showtip)
408 {
409 if (!string.isnullorempty(menu.tiptext))
410 {
411 var rect = new rectangle(lbl.width - 25, lbl.height / 2 - 10, 20, 20);
412 var path = rect.createroundedrectanglepath(5);
413 e.graphics.fillpath(new solidbrush(tipcolor), path);
414 e.graphics.drawstring(menu.tiptext, new font("微软雅黑", 8f), new solidbrush(color.white), rect, new stringformat() { alignment = stringalignment.center, linealignment = stringalignment.center });
415 }
416 else
417 {
418 e.graphics.fillellipse(new solidbrush(tipcolor), new rectangle(lbl.width - 20, lbl.height / 2 - 10, 10, 10));
419 }
420 }
421 if (menu.icon != null)
422 {
423 e.graphics.drawimage(menu.icon, new rectangle(1, (lbl.height - 25) / 2, 25, 25), 0, 0, menu.icon.width, menu.icon.height, graphicsunit.pixel);
424 }
425 }
426 }
427 }
428 }
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