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BS常用方法备忘
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 =http://www.mamicode.com/= 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 #endregion155 #region RadioButtonList156 /// <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 #endregion174 #region DropDownList175 /// <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 #endregion198 #region ListBox199 /// <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 #endregion246 #region TreeView 2013-08-12247 /// <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 =http://www.mamicode.com/= 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 =http://www.mamicode.com/= 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 else512 {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 #endregion527 528 #endregion529 #region html控件方法530 531 #region select532 /// <summary>533 /// 获取下拉选项htm534 /// </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=http://www.mamicode.com/"\">" + 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=http://www.mamicode.com/"" + 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 #endregion578 579 #endregion580 }581 }
BS常用方法备忘
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