先上代码!!!
1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Drawing;
5 using System.Data;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9
10 using System.Reflection;
11 namespace ControlSet
12 {
13 //处理分页时的委托,内置各种方法
14 public delegate void PagerHandler(SimplePager sender);
15 public partial class SimplePager : UserControl
16 {
17 public SimplePager()
18 {
19 InitializeComponent();
20 }
21
22 protected override void OnLoad(EventArgs e)
23 {
24 //this.panel_Main.BringToFront();
25 //让panel控件浮动在最下方
26 this.panel_Main.SendToBack();
27 //当前页的按钮风格
28 this.btn_Number1.BackColor = this.Color;
29 this.btn_Number1.ForeColor = Color.White;
30 this.btn_Number1.Font = new Font("微软雅黑", 15, FontStyle.Bold);
31 this.btn_Number1.Cursor = Cursors.Hand;
32 this.btn_Number1.Location = new Point(206, 19);
33
34 //上一页
35 this.btn_privious.BackColor = Color.White;
36 this.btn_privious.ForeColor = this.Color;
37 this.btn_privious.Font = new Font("微软雅黑", 15, FontStyle.Bold);
38 this.btn_privious.Cursor = Cursors.Hand;
39
40
41 //下一页
42 this.btn_Next.BackColor = Color.White;
43 this.btn_Next.ForeColor = this.Color;
44 this.btn_Next.Font = new Font("微软雅黑", 15, FontStyle.Bold);
45 this.btn_Next.Cursor = Cursors.Hand;
46
47 //尾页
48 this.btn_last.BackColor = Color.White;
49 this.btn_last.ForeColor = this.Color;
50 this.btn_last.Font = new Font("微软雅黑", 15, FontStyle.Bold);
51 this.btn_last.Cursor = Cursors.Hand;
52 //其他页的设置和上一页下一页的风格一页
53 base.OnLoad(e);
54 }
55
56 public void ClickSearch()
57 {
58 this.btn_last.Width = 33 + this.PageCount.ToString().Length * 10;
59 this.btn_last.Text = this.PageCount.ToString();
60 if (this.PageCount < 6)
61 {
62 this.btn_Number1.BackColor = this.Color;
63 this.btn_Number1.ForeColor = Color.White;
64 this.btn_Number1.Font = new Font("微软雅黑", 15, FontStyle.Bold);
65 this.btn_Number1.Cursor = Cursors.Hand;
66 this.btn_Dot1.Visible = false;
67 this.btn_Dot2.Visible = false;
68 if (this.PageCount == 1)
69 {
70 this.btn_privious.Visible = false;
71 this.btn_Next.Visible = false;
72 this.btn_last.Visible = false;
73 this.panel_Main.Controls.Clear();
74 return;
75 }
76 this.btn_privious.Visible = false;
77 this.btn_Next.Visible = true;
78
79 this.panel_Main.Controls.Clear();
80
81 for (int i = 2; i <= PageCount; i++)
82 {
83 Button btn = new Button();
84 btn.Location = new Point(186 + (i - 1) * 42, 1);
85 btn.Name = "btn_Number" + i;
86 btn.Text = i.ToString();
87 btn.Size = new Size(41, 41);
88 btn.BackColor = Color.White;
89 btn.ForeColor = this.Color;
90 btn.Font = new Font("微软雅黑", 15, FontStyle.Bold);
91 btn.Cursor = Cursors.Hand;
92 this.panel_Main.Controls.Add(btn);
93 btn.Click += new EventHandler(btn_Click);
94 }
95 this.btn_privious.Location = new Point(this.btn_Number1.Location.X - 86, 20);
96 this.btn_Next.Location = new Point(290 + (this.panel_Main.Controls.Count - 1) * 42,20);
97 this.btn_last.Visible = false;
98 }
99 else if(this.PageCount == 6)
100 {
101 this.IsSixPageCount();
102 }
103 else if(this.PageCount > 6)
104 {
105 this.IsExceedSixPageCount();
106 }
107
108 }
109 public void BindData()
110 {
111 this.btn_privious.Visible = (this.No != 1);
112 //this.btn_last.Visible = (this.No != this.PageCount);
113 this.btn_Next.Visible = (this.No != this.PageCount);
114 if(this.PageChanging != null)
115 {
116 this.PageChanging(this);
117 }
118
119 }
120
121 public void ChangeColor()
122 {
123 if (this.No == 1)
124 {
125 this.btn_Number1.BackColor = this.Color;
126 this.btn_Number1.ForeColor = Color.White;
127 this.btn_Number1.Font = new Font("微软雅黑", 15, FontStyle.Bold);
128 this.btn_Number1.Cursor = Cursors.Hand;
129 }
130 else
131 {
132 this.btn_Number1.BackColor = Color.White;
133 this.btn_Number1.ForeColor = this.Color;
134 this.btn_Number1.Font = new Font("微软雅黑", 15, FontStyle.Bold);
135 this.btn_Number1.Cursor = Cursors.Hand;
136 }
137 if (this.No == PageCount)
138 {
139 this.btn_last.BackColor = this.Color;
140 this.btn_last.ForeColor = Color.White;
141 this.btn_last.Font = new Font("微软雅黑", 15, FontStyle.Bold);
142 this.btn_last.Cursor = Cursors.Hand;
143 }
144 else
145 {
146 this.btn_last.BackColor = Color.White;
147 this.btn_last.ForeColor = this.Color;
148 this.btn_last.Font = new Font("微软雅黑", 15, FontStyle.Bold);
149 this.btn_last.Cursor = Cursors.Hand;
150 }
151
152 //上一页
153 this.btn_privious.BackColor = Color.White;
154 this.btn_privious.ForeColor = this.Color;
155 this.btn_privious.Font = new Font("微软雅黑", 15, FontStyle.Bold);
156 this.btn_privious.Cursor = Cursors.Hand;
157
158
159 //下一页
160 this.btn_Next.BackColor = Color.White;
161 this.btn_Next.ForeColor = this.Color;
162 this.btn_Next.Font = new Font("微软雅黑", 15, FontStyle.Bold);
163 this.btn_Next.Cursor = Cursors.Hand;
164
165
166 foreach (Control c in this.panel_Main.Controls)
167 {
168 if (c.GetType() == typeof(Button) && c.Name.Contains("Number"))
169 {
170 int index = c.Name.LastIndexOf(‘r‘);
171 if (c.Name.Substring(index + 1, c.Name.Length - index - 1) == this.No.ToString())
172 {
173 c.BackColor = this.Color;
174 c.ForeColor = Color.White;
175 c.Font = new Font("微软雅黑", 15, FontStyle.Bold);
176 c.Cursor = Cursors.Hand;
177 }
178 else
179 {
180 c.BackColor = Color.White;
181 c.ForeColor = this.Color;
182 c.Font = new Font("微软雅黑", 15, FontStyle.Bold);
183 c.Cursor = Cursors.Hand;
184 }
185 }
186 }
187 }
188
189 //搜索页数小于6页时候,动态生成按钮数字的单机事件
190 void btn_Click(object sender, EventArgs e)
191 {
192 this.No = int.Parse(((Button)sender).Text);
193
194 this.btn_privious.Visible = (this.No != 1);//上一页
195 //this.btn_last.Visible = (this.No != this.PageCount);
196 this.btn_Next.Visible = (this.No != this.PageCount);
197
198 this.ChangeColor();
199
200 }
201 public event PagerHandler PageChanging;
202
203 /// <summary>
204 /// 当前是第几页
205 /// </summary>
206 public int No { get; set; }
207
208 /// <summary>
209 /// 每页记录数,如每页10条记录
210 /// </summary>
211 /// <param name="sender"></param>
212 /// <param name="e"></param>
213
214 public int PageSize { get; set; }
215
216
217 /// <summary>
218 /// 总记录数
219 /// </summary>
220 /// <param name="sender"></param>
221 /// <param name="e"></param>
222
223 public int RecordCount { get; set; }
224
225 /// <summary>
226 /// 总页数
227 /// </summary>
228 /// <param name="sender"></param>
229 /// <param name="e"></param>
230 public int PageCount
231 {
232 get
233 {
234 if (this.RecordCount == 0 || this.PageSize == 0)
235 {
236 return 0;
237 }
238 if (this.RecordCount % this.PageSize == 0)
239 {
240 return this.RecordCount / this.PageSize;
241 }
242
243 return this.RecordCount / this.PageSize + 1;
244 }
245 }
246
247 /// <summary>
248 /// 获取分页时候的开始索引
249 /// </summary>
250 /// <param name="sender"></param>
251 /// <param name="e"></param>
252
253 public int StartIndex
254 {
255 get
256 {
257 return (this.No - 1) * this.PageSize + 1;
258 }
259 }
260
261 /// <summary>
262 /// 获取结束索引
263 /// </summary>
264 /// <param name="sender"></param>
265 /// <param name="e"></param>
266 public int EndIndex
267 {
268 get
269 {
270 return this.No * this.PageSize;
271 }
272 }
273 private Color color = Color.FromArgb(0, 153, 96);
274
275 public Color Color
276 {
277 get { return color; }
278 set { color = value; }
279 }
280 private void SimplePager_Load(object sender, EventArgs e)
281 {
282
283 }
284
285 private void btn_privious_Click(object sender, EventArgs e)
286 {
287 this.No--;
288 this.IsSixPageCount();
289 this.IsExceedSixPageCount();
290 this.ChangeColor();
291 this.BindData();
292 }
293
294 private void IsSixPageCount()
295 {
296 if (this.PageCount == 6)
297 {
298 if (this.No == 1)
299 {
300 this.btn_Number1.BackColor = this.Color;
301 this.btn_Number1.ForeColor = Color.White;
302 this.btn_Number1.Font = new Font("微软雅黑", 15, FontStyle.Bold);
303 this.btn_Number1.Cursor = Cursors.Hand;
304 this.btn_Number1.Location = new Point(206, 19);
305
306 this.btn_Dot1.Visible = false;
307 this.btn_Dot2.Visible = true;
308 this.btn_Next.Visible = true;
309
310 this.panel_Main.Controls.Clear();
311 for (int i = 2; i < 6; i++)
312 {
313 Button btn6 = new Button();
314 btn6.Location = new Point(186 + (i - 1) * 42, 1);
315 btn6.Name = "btn_Number" + i;
316 btn6.Text = i.ToString();
317 btn6.Size = new Size(41, 41);
318 btn6.BackColor = Color.White;
319 btn6.ForeColor = this.Color;
320 btn6.Font = new Font("微软雅黑", 15, FontStyle.Bold);
321 btn6.Cursor = Cursors.Hand;
322 this.panel_Main.Controls.Add(btn6);
323 btn6.Click += (sendar, args) =>
324 {
325 this.No = int.Parse(((Button)sendar).Text);
326 this.IsSixPageCount();
327 this.btn_privious.Visible = (this.No != 1);//上一页
328 //this.btn_last.Visible = (this.No != this.PageCount);
329 this.btn_Next.Visible = (this.No != this.PageCount);
330 this.ChangeColor();
331 };
332 }
333 this.btn_Dot2.Location = new Point(290 + (this.panel_Main.Controls.Count - 1) * 42, 19);
334 this.btn_privious.Location = new Point(this.btn_Number1.Location.X - 86, 20);
335 this.btn_Next.Location = new Point(290 + (this.panel_Main.Controls.Count) * 42, 20);
336 this.btn_last.Visible = false;
337 }
338 }
339 if (this.PageCount == 6)
340 {
341 this.btn_Dot1.Visible = false;
342 if (!this.panel_Main.Controls.Contains(this.panel_Main.Controls["btn_Number6"]))
343 {
344 this.btn_Dot2.Visible = false;
345 Button btn = new Button();
346 btn.Location = new Point(186 + (6 - 1) * 42, 1);
347 btn.Name = "btn_Number" + 6;
348 btn.Text = "6";
349 btn.Size = new Size(41, 41);
350 btn.BackColor = Color.White;
351 btn.ForeColor = this.Color;
352 btn.Font = new Font("微软雅黑", 15, FontStyle.Bold);
353 btn.Cursor = Cursors.Hand;
354 this.panel_Main.Controls.Add(btn);
355 this.btn_Next.Location = new Point(290 + (this.panel_Main.Controls.Count - 1) * 42, 20);
356 btn.Click += (obj, args) =>
357 {
358 Button btns = (Button)obj;
359 this.No = 6;
360 this.btn_Next.Visible = false;
361 this.ChangeColor();
362 };
363 }
364 if (this.PageCount - this.No > 2)
365 {
366 Button c = (Button)this.panel_Main.Controls["btn_Number6"];
367 c.Visible = false;
368 this.btn_Dot2.Visible = true;
369 }
370 else
371 {
372 Button c = (Button)this.panel_Main.Controls["btn_Number6"];
373 c.Visible = true;
374 this.btn_Dot2.Visible = false;
375 }
376 }
377 }
378 private void PageStyleOne()
379 {
380 this.btn_Number1.Location = new Point(206, 19);
381 this.panel_Main.Controls.Clear();
382 for (int i = 2; i < 6; i++)
383 {
384 Button btnExceed6 = new Button();
385 btnExceed6.Location = new Point(186 + (i - 1) * 42, 1);
386 btnExceed6.Name = "btn_Number" + i;
387 btnExceed6.Text = i.ToString();
388 btnExceed6.Size = new Size(41, 41);
389 btnExceed6.BackColor = Color.White;
390 btnExceed6.ForeColor = this.Color;
391 btnExceed6.Font = new Font("微软雅黑", 15, FontStyle.Bold);
392 btnExceed6.Cursor = Cursors.Hand;
393 this.panel_Main.Controls.Add(btnExceed6);
394 btnExceed6.Click += (sendar, args) =>
395 {
396 this.No = int.Parse(((Button)sendar).Text);
397 this.IsExceedSixPageCount();
398 };
399 }
400 this.btn_Dot1.Visible = false;
401 this.btn_Dot2.Visible = true;
402 this.btn_Next.Visible = true;
403 this.btn_Dot2.Location = new Point(290 + (this.panel_Main.Controls.Count - 1) * 42, 19);
404 this.btn_privious.Location = new Point(this.btn_Number1.Location.X - 86, 20);
405 this.btn_last.Visible = true;
406 this.btn_last.Location = new Point(290 + (this.panel_Main.Controls.Count) * 42, 20);
407 this.btn_last.BackColor = Color.White;
408 this.btn_last.ForeColor = this.Color;
409 this.btn_last.Font = new Font("微软雅黑", 15, FontStyle.Bold);
410 this.btn_last.Cursor = Cursors.Hand;
411
412 this.btn_Next.Location = new Point(this.btn_last.Location.X + this.btn_last.Width, 20);
413 this.ChangeColor();
414 }
415 private void PageStyleSpecial()
416 {
417 this.panel_Main.Controls.Clear();
418 this.btn_Dot1.Visible = false;
419 this.btn_Dot2.Visible = false;
420
421 for (int i = this.No - 2; i < this.PageCount; i++)
422 {
423 Button btning = new Button();
424 btning.Location = new Point(186 + (i - 1) * 42, 1);
425 btning.Name = "btn_Number" + i;
426 btning.Text = i.ToString();
427 btning.Size = new Size(41, 41);
428 btning.BackColor = Color.White;
429 btning.ForeColor = this.Color;
430 btning.Font = new Font("微软雅黑", 15, FontStyle.Bold);
431 btning.Cursor = Cursors.Hand;
432 this.panel_Main.Controls.Add(btning);
433 //对动态生成的按钮写单击事件
434 btning.Click += (sendar, e) =>
435 {
436 this.No = int.Parse(((Button)sendar).Text);
437 this.btn_privious.Visible = (this.No != 1);//上一页
438 //this.btn_last.Visible = (this.No != this.PageCount);
439 this.btn_Next.Visible = (this.No != this.PageCount);
440
441 this.ChangeColor();
442 this.IsExceedSixPageCount();
443 };
444 }
445 //this.btn_Dot2.Location = new Point(290 + (this.panel_Main.Controls.Count - 1) * 42, 19);
446 this.btn_privious.Location = new Point(this.btn_Number1.Location.X - 86, 20);
447 this.btn_last.Visible = true;
448 this.btn_last.Location = new Point(290 + (this.panel_Main.Controls.Count - 1) * 42, 20);
449 this.btn_Next.Location = new Point(this.btn_last.Location.X + this.btn_last.Width, 20);
450 this.ChangeColor();
451 }
452 //当页数超过6页时候应该调用的方法
453 private void IsExceedSixPageCount()
454 {
455 if(this.PageCount > 6)
456 {
457 if (this.No == 1)
458 {
459 this.PageStyleOne();
460 }
461 //点击的是最后一页,显示最后5页 无下一页
462 else if (this.No == this.PageCount)
463 {
464 PageStyleLast();
465 }
466 //非常特殊的情况,刚好分7页,而正好当前页为最中间的第4页
467 else if (this.No == 4)
468 {
469 if (this.PageCount == 7)
470 {
471 this.PageStyleSpecial();
472 }
473 //表示点击第4页 页数大于7和点击1时的风格一样
474 else
475 {
476 this.PageStyleOne();
477 }
478 }
479 else if (this.No < 4)//这种情况和this.No == 1的显示方式差不多
480 {
481 this.PageStyleOne();
482 }
483 //需要使用点1显示省略部分
484 else if (this.No > 4)
485 {
486 this.btn_Dot1.Visible = true;
487 this.btn_Dot1.Location = new Point(this.btn_Number1.Location.X + 42, 19);
488 //有第一个省略号,无第二个省略号显示风格为1... 7 8 9 10 11 下一页
489 if (this.PageCount - this.No < 4)
490 {
491 PageStyleDotOne();
492 }
493 //第一个和第二个省略号都有,上一页1...6,7,8,9,10...24下一页
494 else if (this.PageCount - this.No >= 4)
495 {
496 PageStyleDotOneDotTwo();
497 }
498 }
499
500 }
501 }
502
503 //还需要继续写代码优化性能
504 private void PageStyleLast()
505 {
506 this.panel_Main.Controls.Clear();
507 this.btn_Dot1.Visible = true;
508 this.btn_Dot1.Location = new Point(this.btn_Number1.Location.X + 42, 19);
509 this.btn_Dot2.Visible = false;
510 int j = 0;
511 //需要动态计算
512 for (int i = this.PageCount - 4; i < this.PageCount; i++)
513 {
514 Button btning = new Button();
515 btning.Location = new Point(this.btn_Dot1.Location.X + j * (33 + this.PageCount.ToString().Length * 10) + 21, 1);
516 btning.Name = "btn_Number" + i;
517 btning.Text = i.ToString();
518 btning.Size = new Size(41, 41);
519 btning.BackColor = Color.White;
520 btning.ForeColor = this.Color;
521 btning.Font = new Font("微软雅黑", 15, FontStyle.Bold);
522 btning.Cursor = Cursors.Hand;
523 btning.Width = 33 + this.PageCount.ToString().Length * 10;
524 this.panel_Main.Controls.Add(btning);
525 //对动态生成的按钮写单击事件
526 btning.Click += (sendar, e) =>
527 {
528 this.No = int.Parse(((Button)sendar).Text);
529 this.btn_privious.Visible = (this.No != 1);//上一页
530 //this.btn_last.Visible = (this.No != this.PageCount);
531 this.btn_Next.Visible = (this.No != this.PageCount);
532 this.IsExceedSixPageCount();
533 };
534 j++;
535 }
536 this.btn_Next.Visible = false;
537 this.btn_last.Visible = true;
538 this.btn_last.Location = new Point(290 + (this.panel_Main.Controls.Count) * (33 + this.PageCount.ToString().Length * 10), 20);
539 this.ChangeColor();
540 }
541
542 private void PageStyleDotOneDotTwo()
543 {
544 if (this.panel_Main.Controls.Count != 5)
545 {
546 this.panel_Main.Controls.Clear();
547 int j = 0;
548 for (int i = this.No - 2; i <= this.No + 2; i++)
549 {
550 Button btning = new Button();
551 //由于页数过多,需要动态编写按钮的位置
552 btning.Location = new Point(this.btn_Dot1.Location.X + j * (33 + (this.No + 2).ToString().Length * 10) + 21, 1);
553 btning.Name = "btn_Number" + i;
554 btning.Text = i.ToString();
555 btning.Size = new Size(41, 41);
556 btning.BackColor = Color.White;
557 btning.ForeColor = this.Color;
558 btning.Font = new Font("微软雅黑", 15, FontStyle.Bold);
559 btning.Cursor = Cursors.Hand;
560 btning.Width = 33 + (this.No + 2).ToString().Length * 10;
561 this.panel_Main.Controls.Add(btning);
562 //对动态生成的按钮写单击事件
563 btning.Click += (sendar, e) =>
564 {
565 this.No = int.Parse(((Button)sendar).Text);
566 this.btn_privious.Visible = (this.No != 1);//上一页
567 //this.btn_last.Visible = (this.No != this.PageCount);
568 this.btn_Next.Visible = (this.No != this.PageCount);
569
570 this.ChangeColor();
571 this.IsExceedSixPageCount();
572 };
573 j++;
574 }
575 this.btn_Dot2.Visible = true;
576 this.btn_Dot2.Location = new Point(290 + (this.panel_Main.Controls.Count) * (33 + (this.No + 2).ToString().Length * 10), 20);
577 this.btn_Dot2.Visible = true;
578 this.btn_privious.Location = new Point(this.btn_Number1.Location.X - 86, 20);
579 this.btn_last.Visible = true;
580 this.btn_last.Location = new Point(this.btn_Dot2.Location.X + this.btn_Dot2.Width, 20);
581 this.btn_Next.Location = new Point(this.btn_last.Location.X + (33 + (this.PageCount.ToString().Length) * 10), 20);
582 this.ChangeColor();
583 }
584 else if(this.panel_Main.Controls.Count == 5)
585 {
586 int j = 0;
587 int i = this.No - 2;
588 foreach(Control c in this.panel_Main.Controls)
589 {
590 Button buttoning = c as Button;
591 buttoning.Name = "btn_Number" + i;
592 buttoning.Text = i.ToString();
593 if((this.No + 2)/10 - (this.No - 2)/10 ==1 || (this.No + 2)/10 - (this.No - 2)/10 == 0)
594 {
595 buttoning.Location = new Point(this.btn_Dot1.Location.X + j * (33 + (this.No + 2).ToString().Length * 10) + 21, 1);
596 buttoning.Width = 33 + (this.No + 2).ToString().Length * 10;
597 }
598
599 this.ClearEvent<Button>(buttoning);
600
601 buttoning.Click += (sendar, e) =>
602 {
603 this.No = int.Parse(((Button)sendar).Text);
604 this.btn_privious.Visible = (this.No != 1);//上一页
605 //this.btn_last.Visible = (this.No != this.PageCount);
606 this.btn_Next.Visible = (this.No != this.PageCount);
607 this.IsExceedSixPageCount();
608 };
609 i++;
610 j++;
611 }
612
613 this.btn_Dot2.Visible = true;
614 this.btn_Dot2.Location = new Point(290 + (this.panel_Main.Controls.Count) * (33 + (this.No + 2).ToString().Length * 10), 20);
615 this.btn_Dot2.Visible = true;
616 this.btn_privious.Location = new Point(this.btn_Number1.Location.X - 86, 20);
617 this.btn_last.Visible = true;
618 this.btn_last.Location = new Point(this.btn_Dot2.Location.X + this.btn_Dot2.Width, 20);
619 this.btn_Next.Location = new Point(this.btn_last.Location.X + (33 + (this.PageCount.ToString().Length) * 10), 20);
620 this.ChangeColor();
621 }
622 }
623
624 private void PageStyleDotOne()
625 {
626 this.btn_Dot2.Visible = false;
627 int j = 0;
628 if (this.panel_Main.Controls.Count != 4)
629 {
630 j = 0;
631 this.panel_Main.Controls.Clear();
632 for (int i = this.PageCount - 4; i < this.PageCount; i++)
633 {
634 Button btning = new Button();
635 btning.Location = new Point(this.btn_Dot1.Location.X + j * (33 + this.PageCount.ToString().Length * 10) + 21, 1);
636 btning.Name = "btn_Number" + i;
637 btning.Text = i.ToString();
638 btning.Size = new Size(41, 41);
639 btning.BackColor = Color.White;
640 btning.ForeColor = this.Color;
641 btning.Font = new Font("微软雅黑", 15, FontStyle.Bold);
642 btning.Cursor = Cursors.Hand;
643 btning.Width = 33 + this.PageCount.ToString().Length * 10;
644 this.panel_Main.Controls.Add(btning);
645 //对动态生成的按钮写单击事件
646 btning.Click += (sendar, e) =>
647 {
648 this.No = int.Parse(((Button)sendar).Text);
649 this.btn_privious.Visible = (this.No != 1);//上一页
650 //this.btn_last.Visible = (this.No != this.PageCount);
651 this.btn_Next.Visible = (this.No != this.PageCount);
652 this.IsExceedSixPageCount();
653 };
654 j++;
655 }
656 this.btn_last.Visible = true;
657 this.btn_last.Location = new Point(290 + (this.panel_Main.Controls.Count) * (33 + this.PageCount.ToString().Length * 10), 20);
658 this.btn_Next.Visible = true;
659 this.btn_Next.Location = new Point(this.btn_last.Location.X + (33 + this.PageCount.ToString().Length * 10), 20);
660 this.ChangeColor();
661 }
662 else
663 {
664 int i = this.PageCount - 4;
665 j = 0;
666 foreach(Control c in this.panel_Main.Controls)
667 {
668 Button btning = c as Button;
669 btning.Name = "btn_Number" + i;
670 btning.Text = i.ToString();
671 this.ClearEvent<Button>(btning);
672 btning.Click += (sendar, args) =>
673 {
674 this.No = int.Parse(((Button)sendar).Text);
675 this.btn_privious.Visible = (this.No != 1);//上一页
676 //this.btn_last.Visible = (this.No != this.PageCount);
677 this.btn_Next.Visible = (this.No != this.PageCount);
678 this.IsExceedSixPageCount();
679 };
680 i++;
681 j++;
682 }
683 this.btn_last.Visible = true;
684 this.btn_last.Location = new Point(290 + (this.panel_Main.Controls.Count) * (33 + this.PageCount.ToString().Length * 10), 20);
685 this.btn_Next.Visible = true;
686 this.btn_Next.Location = new Point(this.btn_last.Location.X + (33 + this.PageCount.ToString().Length * 10), 20);
687 this.ChangeColor();
688 }
689 }
690
691 private void btn_Next_Click(object sender, EventArgs e)
692 {
693 this.No++;
694 this.IsSixPageCount();
695 this.IsExceedSixPageCount();
696 this.ChangeColor();
697 this.BindData();
698 }
699
700 private void btn_display_Click(object sender, EventArgs e)
701 {
702 //第一页
703 this.No = 1;
704 this.BindData();
705 this.IsSixPageCount();
706
707 this.IsExceedSixPageCount();
708 this.ChangeColor();
709 }
710
711 private void btn_last_Click(object sender, EventArgs e)
712 {
713 this.No = this.PageCount;
714 this.BindData();
715 this.IsSixPageCount();
716 this.IsExceedSixPageCount();
717 this.ChangeColor();
718 }
719 #region 传入控件就对控件的所有事件委托清空的方法
720 public void ClearEvent<T>(Control Ctl)
721 {
722 Delegate[] invokeList = GetObjectEvenList(Ctl, "EventClick");
723 if (invokeList != null)
724 {
725 foreach (Delegate del in invokeList)
726 {
727 typeof(T).GetEvent("Click").RemoveEventHandler(Ctl, del);
728 }
729 }
730 }
731 /// <summary>
732 /// 获取控件事件
733 /// </summary>
734 /// <param name="p_Control">对象</param>
735 /// <param name="p_EventName">事件名</param>
736 /// <returns>委托列</returns>
737 public Delegate[] GetObjectEvenList(Control p_Control, string p_EventName)
738 {
739 PropertyInfo PropertyInfo = p_Control.GetType().GetProperty("Events", BindingFlags.Instance | BindingFlags.NonPublic);
740 if (PropertyInfo != null)
741 {
742 object EventList = PropertyInfo.GetValue(p_Control, null);
743 if (EventList != null && EventList is EventHandlerList)
744 {
745 EventHandlerList List = (EventHandlerList)EventList;
746 FieldInfo FieldInfo = (typeof(Control)).GetField(p_EventName, BindingFlags.Static | BindingFlags.NonPublic);
747 if (FieldInfo == null)
748 {
749 return null;
750 }
751 Delegate ObjectDeletegate = List[FieldInfo.GetValue(p_Control)];
752 if (ObjectDeletegate == null)
753 {
754 return null;
755 }
756
757 return ObjectDeletegate.GetInvocationList();
758 }
759 }
760 return null;
761 }
762 #endregion
763 }
764 }
学完委托,事件后的练手分页控件,有不足之处请指出。分页上10万条数据后会有延迟，不知道用多线程处理会不会更好,本人小菜鸟一个
时间： 2024-08-04 17:26:28