在B/S项目开发过程中总结的一些常用方法，如：常量、验证方法、服务器控件方法、html控件方法等。
1 ///******************* 说明 ***************************///
2 /// 作者：清风携夕阳
3 /// 时间：2014-09-29
4 /// 描述：Web服务端控件辅助类，程序开发过程中常用方法
5 ///***************************************************///
6 using System;
7 using System.Data;
8 using System.Collections.Generic;
9 using System.Web.UI.WebControls;
10 namespace Common
11 {
12 /// <summary>
13 /// Web服务端控件辅助类
14 /// </summary>
15 [Serializable]
16 public static class WebHelper
17 {
18 #region 常量、静态变量
19 /// <summary>
20 /// 8位时间格式yyyymmdd
21 /// </summary>
22 public static string time8 = "yyyymmdd";
23 /// <summary>
24 /// 10位时间格式yyyy-mm-dd
25 /// </summary>
26 public static string time10 = "yyyy-mm-dd";
27 /// <summary>
28 /// 通用空值选项文本
29 /// </summary>
30 public static string emptySelect = "--请选择--";
31 #endregion
32 #region 验证、检测方法
33 /// <summary>
34 /// 验证sql匹配条件是否正确(若以and开头则自动去除)
35 /// </summary>
36 /// <param name="strWhere">sql匹配条件</param>
37 public static string CheckStrWhere(string strWhere)
38 {
39 string str = strWhere.TrimStart();//去除前置空格
40 if (str.ToLower().IndexOf("and ") == 0)//若以and开头则自动去除第一个and
41 {
42 strWhere = str.Substring(4);//若要保留前面一个空格，可以改为3
43 }
44 return strWhere;
45 }
46 #endregion
47 #region 服务端控件方法
48
49 #region CheckBoxList
50 /// <summary>
51 /// 获取CheckBoxList选中项数目
52 /// </summary>
53 public static int CheckedCount(CheckBoxList ckboxlist)
54 {
55 int count = 0;
56 foreach (ListItem item in ckboxlist.Items)
57 {
58 if (item.Selected == true)
59 {
60 count++;
61 }
62 }
63 return count;
64 }
65 /// <summary>
66 /// 根据选项值选中CheckBoxList选项
67 /// </summary>
68 public static void SetChecked(CheckBoxList cboxlist, List<string> vals)
69 {
70 if (vals == null || vals.Count == 0)
71 {
72 return;
73 }
74 for (int i = 0; i < cboxlist.Items.Count; i++)
75 {
76 ListItem item = cboxlist.Items[i];
77 for (int j = 0; j < vals.Count; j++)
78 {
79 if (item.Value == vals[j])
80 {
81 item.Selected = true;
82 vals.Remove(vals[j]);
83 break;
84 }
85 }
86 if (vals.Count == 0)
87 {
88 return;
89 }
90 }
91 }
92 /// <summary>
93 /// 获取CheckBoxList选中项的值
94 /// </summary>
95 public static List<string> GetChecked(CheckBoxList cboxlist)
96 {
97 List<string> vals = new List<string>();
98 foreach (ListItem item in cboxlist.Items)
99 {
100 if (item.Selected == true)
101 {
102 vals.Add(item.Value);
103 }
104 }
105 return vals;
106 }
107 /// <summary>
108 /// 清空选项
109 /// </summary>
110 public static void ClearChecked(CheckBoxList cboxlist)
111 {
112 foreach (ListItem item in cboxlist.Items)
113 {
114 item.Selected = false;
115 }
116 }
117 /// <summary>
118 /// 全选
119 /// </summary>
120 public static void CheckAll(CheckBoxList cboxlist)
121 {
122 foreach (ListItem item in cboxlist.Items)
123 {
124 item.Selected = true;
125 }
126 }
127 /// <summary>
128 /// 反选
129 /// </summary>
130 public static void CheckNotChecked(CheckBoxList cboxlist)
131 {
132 foreach (ListItem item in cboxlist.Items)
133 {
134 item.Selected = !item.Selected;
135 }
136 }
137 /// <summary>
138 /// 根据数据表绑定CheckBoxList控件
139 /// </summary>
140 /// <param name="dt">数据表</param>
141 /// <param name="TextField">选项名称列编码</param>
142 /// <param name="ValueField">选项值列编码</param>
143 public static void BindCheckBoxList(CheckBoxList cboxlist, DataTable dt, string TextField, string ValueField)
144 {
145 cboxlist.Items.Clear();
146 if (dt != null && dt.Rows.Count > 0)
147 {
148 cboxlist.DataSource = dt;
149 cboxlist.DataTextField = TextField;
150 cboxlist.DataValueField = ValueField;
151 cboxlist.DataBind();
152 }
153 }
154 #endregion
155 #region RadioButtonList
156 /// <summary>
157 /// 根据数据表绑定RadioButtonList控件
158 /// </summary>
159 /// <param name="dt">数据</param>
160 /// <param name="TextField">选项名称列编码</param>
161 /// <param name="ValueField">选项值列编码</param>
162 public static void BindRadioButtonList(RadioButtonList rdolist, DataTable dt, string TextField, string ValueField)
163 {
164 rdolist.Items.Clear();
165 if (dt != null && dt.Rows.Count > 0)
166 {
167 rdolist.DataSource = dt;
168 rdolist.DataTextField = TextField;
169 rdolist.DataValueField = ValueField;
170 rdolist.DataBind();
171 }
172 }
173 #endregion
174 #region DropDownList
175 /// <summary>
176 /// 根据数据表绑定RadioButtonList控件
177 /// </summary>
178 /// <param name="dt">数据表</param>
179 /// <param name="TextField">选项名称列编码</param>
180 /// <param name="ValueField">选项值列编码</param>
181 /// <param name="ListName">空值显示文本，若为空则无空值选项</param>
182 public static void BindDropDownList(DropDownList dlist, DataTable dt, string TextField, string ValueField, string EmptyValueText)
183 {
184 dlist.Items.Clear();
185 if (dt != null && dt.Rows.Count > 0)
186 {
187 dlist.DataSource = dt;
188 dlist.DataTextField = TextField;
189 dlist.DataValueField = ValueField;
190 dlist.DataBind();
191 }
192 if (!String.IsNullOrEmpty(EmptyValueText))
193 {
194 dlist.Items.Insert(0, new ListItem(EmptyValueText, ""));
195 }
196 }
197 #endregion
198 #region ListBox
199 /// <summary>
200 /// 根据数据表绑定ListBox控件
201 /// </summary>
202 /// <param name="dt">数据表</param>
203 /// <param name="TextField">选项名称列编码</param>
204 /// <param name="ValueField">选项值列编码</param>
205 public static void BindListBox(ListBox lbox, DataTable dt, string TextField, string ValueField)
206 {
207 lbox.Items.Clear();
208 if (dt != null && dt.Rows.Count > 0)
209 {
210 lbox.DataSource = dt;
211 lbox.DataTextField = TextField;
212 lbox.DataValueField = ValueField;
213 lbox.DataBind();
214 }
215 }
216 /// <summary>
217 /// 根据选项文本查找并选中ListBox选项
218 /// </summary>
219 /// <param name="lbox">ListBox</param>
220 /// <param name="strValue">选项显示的文本</param>
221 public static void FindAndFixItemByText(ListBox lbox, string strValue)
222 {
223 int count = lbox.Items.Count;
224 int index = lbox.SelectedIndex;
225 if (count > 0)
226 {
227 int i = index + 1;
228 for (; i < count; i++)
229 {
230 ListItem li = lbox.Items[i];
231 if (li.Text.Contains(strValue))
232 {
233 lbox.SelectedIndex = i;
234 break;
235 }
236 if (index > 0 && i == count - 1)
237 {
238 count = index;
239 i = 0;
240 index = 0;
241 }
242 }
243 }
244 }
245 #endregion
246 #region TreeView 2013-08-12
247 /// <summary>
248 /// 展开指定节点的所有上级节点
249 /// </summary>
250 public static void ExpandAllParentNode(TreeNode tn)
251 {
252 if (tn.Parent != null)
253 {
254 tn.Parent.Expand();
255 ExpandAllParentNode(tn.Parent);
256 }
257 }
258 /// <summary>
259 /// 清空TreeView节点选中状态
260 /// </summary>
261 public static void ClearTreeNodesChecked(TreeView tview)
262 {
263 if (tview.Nodes.Count > 0)
264 {
265 foreach (TreeNode tn in tview.Nodes)
266 {
267 ClearTreeNodesChecked(tn);
268 }
269 }
270 }
271 /// <summary>
272 /// 清空子节点选中状态
273 /// </summary>
274 public static void ClearTreeNodesChecked(TreeNode tn)
275 {
276 if (tn != null)
277 {
278 tn.Checked = false;
279 if (tn.ChildNodes.Count > 0)
280 {
281 foreach (TreeNode child in tn.ChildNodes)
282 {
283 ClearTreeNodesChecked(child);
284 }
285 }
286 }
287 }
288 /// <summary>
289 /// 根据节点Value值查找节点
290 /// </summary>
291 /// <param name="tnParent">根节点</param>
292 /// <param name="strValue">节点值</param>
293 public static TreeNode FindNodeByValue(TreeNode tnParent, string strValue)
294 {
295 if (tnParent == null)
296 return null;
297 if (tnParent.Value == strValue)
298 return tnParent;
299 TreeNode tnRet = null;
300 foreach (TreeNode tn in tnParent.ChildNodes)
301 {
302 tnRet = FindNodeByValue(tn, strValue);
303 if (tnRet != null) break;
304 }
305 return tnRet;
306 }
307 /// <summary>
308 /// 根据节点Value值查找节点
309 /// </summary>
310 /// <param name="tview">TreeView</param>
311 /// <param name="strValue">节点值</param>
312 public static TreeNode FindNodeByValue(TreeView tview, string strValue)
313 {
314 if (tview.Nodes.Count == 0)
315 return null;
316 TreeNode tnRet = null;
317 foreach (TreeNode tn in tview.Nodes)
318 {
319 tnRet = FindNodeByValue(tn, strValue);
320 if (tnRet != null) break;
321 }
322 return tnRet;
323 }
324 /// <summary>
325 /// 根据节点Value值查找指定层级的节点
326 /// </summary>
327 /// <param name="tnParent">根节点</param>
328 /// <param name="depth">节点层级</param>
329 /// <param name="strValue">节点值</param>
330 public static TreeNode FindNodeByValue(TreeNode tnParent, int depth, string strValue)
331 {
332 if (tnParent == null)
333 return null;
334 if (tnParent.Value == strValue && tnParent.Depth == depth)
335 return tnParent;
336 TreeNode tnRet = null;
337 if (tnParent.Depth < depth)//不去查找更深层次的节点
338 {
339 foreach (TreeNode tn in tnParent.ChildNodes)
340 {
341 tnRet = FindNodeByValue(tn, depth, strValue);
342 if (tnRet != null) break;
343 }
344 }
345 return tnRet;
346 }
347 /// <summary>
348 /// 根据节点Value值查找指定层级的节点
349 /// </summary>
350 /// <param name="tview">TreeView</param>
351 /// <param name="depth">节点层级</param>
352 /// <param name="strValue">节点值</param>
353 public static TreeNode FindNodeByValue(TreeView tview, int depth, string strValue)
354 {
355 if (tview.Nodes.Count == 0)
356 return null;
357 TreeNode tnRet = null;
358 foreach (TreeNode tn in tview.Nodes)
359 {
360 tnRet = FindNodeByValue(tn, depth, strValue);
361 if (tnRet != null) break;
362 }
363 return tnRet;
364 }
365 /// <summary>
366 /// 根据节点显示名称查找节点
367 /// </summary>
368 /// <param name="tnParent">根节点</param>
369 /// <param name="strValue">节点显示名称</param>
370 public static TreeNode FindNodeByText(TreeNode tnParent, string strValue)
371 {
372 if (tnParent == null)
373 return null;
374 if (tnParent.Text == strValue)
375 return tnParent;
376 TreeNode tnRet = null;
377 foreach (TreeNode tn in tnParent.ChildNodes)
378 {
379 tnRet = FindNodeByText(tn, strValue);
380 if (tnRet != null) break;
381 }
382 return tnRet;
383 }
384 /// <summary>
385 /// 根据节点显示名称查找节点
386 /// </summary>
387 /// <param name="tview">TreeView</param>
388 /// <param name="strValue">节点显示名称</param>
389 public static TreeNode FindNodeByText(TreeView tview, string strValue)
390 {
391 if (tview.Nodes.Count == 0)
392 return null;
393 TreeNode tnRet = null;
394 foreach (TreeNode tn in tview.Nodes)
395 {
396 tnRet = FindNodeByText(tn, strValue);
397 if (tnRet != null) break;
398 }
399 return tnRet;
400 }
401 /// <summary>
402 /// 根据节点显示名称查找指定层级的节点
403 /// </summary>
404 /// <param name="tnParent">根节点</param>
405 /// <param name="depth">节点层级</param>
406 /// <param name="strValue">节点显示名称</param>
407 public static TreeNode FindNodeByText(TreeNode tnParent, int depth, string strValue)
408 {
409 if (tnParent == null)
410 return null;
411 if (tnParent.Text == strValue && tnParent.Depth == depth)
412 return tnParent;
413 TreeNode tnRet = null;
414 if (tnParent.Depth < depth)//不去查找更深层级的节点
415 {
416 foreach (TreeNode tn in tnParent.ChildNodes)
417 {
418 tnRet = FindNodeByText(tn, depth, strValue);
419 if (tnRet != null) break;
420 }
421 }
422 return tnRet;
423 }
424 /// <summary>
425 /// 根据节点显示名称查找指定层级的节点
426 /// </summary>
427 /// <param name="tview">TreeView</param>
428 /// <param name="depth">节点层级</param>
429 /// <param name="strValue">节点显示名称</param>
430 public static TreeNode FindNodeByText(TreeView tview, int depth, string strValue)
431 {
432 if (tview.Nodes.Count == 0)
433 return null;
434 TreeNode tnRet = null;
435 foreach (TreeNode tn in tview.Nodes)
436 {
437 tnRet = FindNodeByText(tn, depth, strValue);
438 if (tnRet != null) break;
439 }
440 return tnRet;
441 }
442 /// <summary>
443 /// 根据节点Value值选中指定层级的节点
444 /// </summary>
445 /// <param name="depth">节点层级</param>
446 /// <param name="strValue">节点值</param>
447 public static TreeNode CheckNodeByValue(TreeView tview, int depth, string strValue)
448 {
449 TreeNode tn = FindNodeByValue(tview, depth, strValue);
450 if (tn != null)
451 {
452 tn.Checked = true;
453 }
454 return tn;
455 }
456 /// <summary>
457 /// 根据节点显示名称选中指定层级的节点
458 /// </summary>
459 /// <param name="tview">TreeView</param>
460 /// <param name="depth">节点层级</param>
461 /// <param name="strValue">节点显示名称</param>
462 public static TreeNode CheckNodeByText(TreeView tview, int depth, string strValue)
463 {
464 TreeNode tn = FindNodeByText(tview, depth, strValue);
465 if (tn != null)
466 {
467 tn.Checked = true;
468 }
469 return tn;
470 }
471 /// <summary>
472 /// 根据节点Value值查找并选定节点
473 /// </summary>
474 /// <param name="strValue">节点值</param>
475 public static TreeNode FixNodeByValue(TreeView tview, string strValue)
476 {
477 TreeNode tn = FindNodeByValue(tview, strValue);
478 if (tn != null)
479 {
480 ExpandAllParentNode(tn);
481 tn.Select();
482 }
483 return tn;
484 }
485 /// <summary>
486 /// 根据节点显示名称查找并选定节点
487 /// </summary>
488 /// <param name="tview">TreeView</param>
489 /// <param name="strValue">节点显示名称</param>
490 public static TreeNode FixNodeByText(TreeView tview, string strValue)
491 {
492 TreeNode tn = FindNodeByText(tview, strValue);
493 if (tn != null)
494 {
495 ExpandAllParentNode(tn);
496 tn.Select();
497 }
498 return tn;
499 }
500 /// <summary>
501 /// 展开第一序列节点并选中最底层节点
502 /// </summary>
503 /// <param name="root">根节点</param>
504 /// <param name="tview">tview</param>
505 public static void ExpandFirstsNode(TreeNode root, TreeView tview)
506 {
507 if (root.ChildNodes.Count > 0)
508 {
509 ExpandFirstsNode(root.ChildNodes[0], tview);
510 }
511 else
512 {
513 root.Select();
514 }
515 }
516 /// <summary>
517 /// 展开第一序列节点并选中最底层节点
518 /// </summary>
519 public static void ExpandFirstsNode(TreeView tview)
520 {
521 if (tview.Nodes.Count > 0)
522 {
523 ExpandFirstsNode(tview.Nodes[0], tview);
524 }
525 }
526 #endregion
527
528 #endregion
529 #region html控件方法
530
531 #region select
532 /// <summary>
533 /// 获取下拉选项htm
534 /// </summary>
535 /// <param name="dt">数据集</param>
536 /// <param name="valueField">选项值字段</param>
537 /// <param name="textField">选项文本字段</param>
538 /// <param name="emptyText">空值文本，若为空则无空值选项</param>
539 public static string GetSelectOptionHtm(DataTable dt, string valueField, string textField, string emptyText)
540 {
541 string htm = String.Empty;
542 if (!String.IsNullOrEmpty(emptyText))
543 {
544 htm += "<option value=\"\">" + emptyText + "</option>\r\n";
545 }
546 if (dt != null)
547 {
548 for (int i = 0; i < dt.Rows.Count; i++)
549 {
550 htm += "<option value=\"" + dt.Rows[i][valueField] + "\">" + dt.Rows[i][textField] + "</option>\r\n";
551 }
552 }
553 return htm;
554 }
555 /// <summary>
556 /// 绑定下拉列表(runat=‘server‘的select)
557 /// </summary>
558 /// <param name="dt">数据集</param>
559 /// <param name="valueField">选项值字段</param>
560 /// <param name="textField">选项文本字段</param>
561 /// <param name="emptyText">空值文本，若为空则无空值选项</param>
562 public static void BindSelectList(DataTable dt,HtmlSelect select,string valueField,string textField,string emptyText)
563 {
564 select.Items.Clear();
565 if (dt != null && dt.Rows.Count > 0)
566 {
567 select.DataSource = dt;
568 select.DataValueField = valueField;
569 select.DataTextField = textField;
570 select.DataBind();
571 }
572 if (!String.IsNullOrEmpty(emptyText))
573 {
574 select.Items.Insert(0, new System.Web.UI.WebControls.ListItem(emptyText, ""));
575 }
576 }
577 #endregion
578
579 #endregion
580 }
581 }
时间： 2024-10-30 04:37:38