MVC html 控件扩展【转载】

项目中用到mvc2控件扩展，任务分给了我，开发完了，结果可能要用devexpress，费了不少功夫，网上查找资料，整理成符合项目的，自己留个备份吧，一起学习

DropDownTree

第一个控件是DropDownTree，名字很形象，类似DropDownList显示形式，下拉树仿照zTree外观，比较简单，思路是后台生成HTML+jquery脚本（还有一种思路是直接通过js加载json数据不过这个不会，希望有人熟悉的给个例子）。

首先，在Scripts文件夹下新增一个js文件命名为DropDownTree.js,脚本代码如下：

DropDownTree.js

  1 var consts = {
  2     line: {
  3         ROOT: "root",
  4         ROOTS: "roots",
  5         CENTER: "center",
  6         BOTTOM: "bottom",
  7         NOLINE: "noline",
  8         LINE: "line"
  9     },
 10     folder: {
 11         OPEN: "open",
 12         CLOSE: "close",
 13         DOCU: "docu"
 14     },
 15     node: {
 16         CURSELECTED: "curSelectedNode",
 17         A_NONE: "a_node_none"
 18     }
 19 }
 20 
 21 $(function () {
 22     $(".DropDownTree").dblclick(function () {  //双击事件清空文本，但不清楚下拉列表选项记录
 23         $(this).attr("value", "");
 24         hideMenu("Div_menu_" + $(this).attr("id").split("_").pop());
 25     }).click(function () { //单击显示列表哦
 26         var $this = $(this);
 27         var textId = $this.attr("id").split("_").pop();
 28         var menuId = "Div_menu_" + $this.attr("id").split("_").pop();
 29         showMenu(textId, menuId);
 30     });
 31 
 32     //a标签绑定clice 事件
 33     $(".a_node_none,.curSelectedNode").bind("click", function () {
 34         var aIdArr = $(this).attr("id").split("_");
 35         //debugger;
 36         $(".curSelectedNode").each(function () {//遍历
 37             var thisId = $(this).attr("id").split("_");
 38             if (thisId[2] == aIdArr[2]) {
 39                 $(this).removeClass(consts.node.CURSELECTED).addClass(consts.node.A_NONE).end();
 40             }
 41         });
 42 
 43         $(this).addClass(consts.node.CURSELECTED).end();
 44 
 45         if ($(this).attr("canSelect") == "true") {
 46             $spNode = $(this).children(".sp_tree");
 47             $("#" + $spNode.attr("id").split("_").pop()).val($spNode.html());
 48         }
 49         else {
 50             alert("该节点不能被选择");
 51         }
 52     });
 53 
 54 
 55 });
 56 
 57 
 58 
 59 //textContent：TextBox's ID
 60 //menuContent: 下拉div ID
 61 function showMenu(textContent, menuContent) {
 62 
 63     var treeDownObj = $("#" + textContent);
 64     var treeDownOffset = $("#" + textContent).offset();
 65     $("#" + menuContent).css({ left: treeDownOffset.left + "px", top: treeDownOffset.top + treeDownObj.outerHeight() + "px" }).slideDown("fast");
 66 
 67     $("body").bind("mousedown", { id: menuContent }, onBodyDown);
 68 
 69     //增加双击事件
 70     $('.a_node_none,.curSelectedNode').dblclick(function () {
 71         var menu = "Div_menu_" + textContent
 72         hideMenu(menu);
 73     });
 74 
 75 }
 76 
 77 function hideMenu(menuid) {
 78     $("#" + menuid).fadeOut("fast");
 79     $("body").unbind("mousedown", onBodyDown);
 80 }
 81 
 82 function onBodyDown(event) {
 83     //获取事件
 84     var e = event || window.event;
 85     //获取元素
 86     var originElement = $(e.target || e.srcElement);
 87     var employeId = event.data.id.split("_"); //参数
 88     var eventid = event.target.id.split("_");
 89     if (!(employeId.pop() == eventid.pop())) {
 90         hideMenu(event.data.id);
 91     }
 92 }
 93 
 94 function bambooClick(obj) {
 95     var $obj = $(obj);
 96     var bamClass = $(obj).attr("class");
 97     if (bamClass != "center_docu" || bamClass != "bottom_docu") {
 98         var ulid = $obj.attr("id").toString().replace("bt", "ul");
 99         if (bamClass.indexOf(consts.folder.OPEN) > -1) {//隐藏
100             if (bamClass.indexOf(consts.line.BOTTOM) > -1) {//last tree bamboo  区分bottom
101                 $(obj).removeClass("bottom_open").addClass("bottom_close"); //bamboo
102                 $(obj).next("a").children(".ico_open").removeClass("ico_open").addClass("ico_close");  //file Icon
103                 $(obj).siblings("ul").hide(); //$("#" + ulid).hide(); //item
104             }
105             else { //非bottom bamboo
106                 $(obj).removeClass("center_open").addClass("center_close"); //bamboo
107                 $(obj).next("a").children(".ico_open").removeClass("ico_open").addClass("ico_close"); //file Icon
108                 var child = $(obj).children();
109                 $(obj).siblings("ul").hide();
110             }
111 
112         }
113         else {//展开  center_docu
114             if (bamClass.indexOf(consts.line.BOTTOM) > -1) {//tree last bamboo
115                 $(obj).removeClass("bottom_close").addClass("bottom_open"); //bamboo
116                 $(obj).next("a").children(".ico_close").removeClass("ico_close").addClass("ico_open");  //file Icon
117                 $(obj).siblings("ul").show();
118                 //$("#" + ulid).show(); //item
119             }
120             else {
121                 $(obj).removeClass("center_close").addClass("center_open"); //bamboo
122                 $(obj).next("a").children(".ico_close").removeClass("ico_close").addClass("ico_open");  //file Icon
123                 $(obj).siblings("ul").show(); //$("#" + ulid).show(); //item
124             }
125         }
126     }
127 }

其次,是样式文件，在Content下新增文件夹，这里命名为DownTreeStyle，在这个文件夹下新增新文件夹命名为img（放置在Tree图片，具体从网上下载，我用的3.0的），在DownTreeStyle文件夹下新增样式文件DownzTreeStyle.css，样式如下：

DownzTreeStyle.css

 1 /*-------------------------------------
 2 zTree Style version:    3.0 
 3 修改日期：2012.1.6,殷懂礼 
 4 -------------------------------------*/
 5 
 6 .ztree * {padding:0; margin:0; font-size:12px; font-family: Verdana, Arial, Helvetica, AppleGothic, sans-serif}
 7 .ztree {margin:0; padding:5px; color:#333}
 8 .ztree li{padding:0; margin:0; list-style:none; line-height:14px; text-align:left; white-space:nowrap}
 9 .ztree li ul{ margin:0; padding:0 0 0 18px}
10 .ztree li ul.line{ background:url(./img/line_conn.gif) 0 0 repeat-y;}
11 
12 .ztree li a {padding:1px 3px 0 0; margin:0 10px 0 0; cursor:pointer; height:16px; color:#333; background-color: transparent;
13     text-decoration:none; vertical-align:top; display: inline-block}
14 .ztree li a:hover {text-decoration:underline;background-color:#fbec88;}
15 .ztree li a.curSelectedNode {padding-top:0px; background-color:#FFE6B0; color:black; border:1px #FFB951 solid;
16     opacity:0.8; filter:alpha(opacity=80)}
17 .ztree li a.curSelectedNode_Edit {padding-top:0px; background-color:#FFE6B0; color:black;
18     border:1px #FFB951 solid; opacity:0.8; filter:alpha(opacity=80)}
19 .ztree li a.tmpTargetNode {padding-top:0px; background-color:#316AC5; color:white; border:1px #316AC5 solid;
20     opacity:0.8; filter:alpha(opacity=80)}
21 .ztree li a input.rename {height:14px; width:80px; padding:0; margin:0;
22     font-size:12px; border:1px #7EC4CC solid; *border:0px}
23 .ztree li span {line-height:16px; margin-right: 2px}
24 .ztree li button {width:16px; height:16px; vertical-align:middle; border:0 none; cursor: pointer;
25     background-color:transparent; background-repeat:no-repeat; background-attachment: scroll;
26     background-image:url("./img/zTreeStandard.png"); *background-image:url("./img/zTreeStandard.gif")}
27 /*  这段代码暂时没有用的上
28 .ztree li button.chk {width:13px; height:13px; margin:0 3px 0 0; cursor: auto}
29 .ztree li button.chk.checkbox_false_full {background-position:0 0}
30 .ztree li button.chk.checkbox_false_full_focus {background-position:0 -12px}
31 .ztree li button.chk.checkbox_true_full {background-position:0 -24px}
32 .ztree li button.chk.checkbox_true_full_focus {background-position:0 -36px}
33 .ztree li button.chk.checkbox_true_part {background-position:0 -48px}
34 .ztree li button.chk.checkbox_true_part_focus {background-position:0 -60px}
35 .ztree li button.chk.checkbox_false_part {background-position:0 -72px}
36 .ztree li button.chk.checkbox_false_part_focus {background-position:0 -84px}
37 .ztree li button.chk.radio_false_full {background-position:-13px 0}
38 .ztree li button.chk.radio_false_full_focus {background-position:-13px -12px}
39 .ztree li button.chk.radio_true_full {background-position:-13px -24px}
40 .ztree li button.chk.radio_true_full_focus {background-position:-13px -36px}
41 .ztree li button.chk.radio_true_part {background-position:-13px -48px}
42 .ztree li button.chk.radio_true_part_focus {background-position:-13px -60px}
43 .ztree li button.chk.radio_false_part {background-position:-13px -72px}
44 .ztree li button.chk.radio_false_part_focus {background-position:-13px -84px}
45 */
46 .ztree li button.switch {width:18px; height:18px}
47 .ztree li button.root_open{background-position:-62px -54px}
48 .ztree li button.root_close{background-position:-44px -54px}
49 .ztree li button.roots_open{background-position:-62px 0}
50 .ztree li button.roots_close{background-position:-44px 0}
51 .ztree li button.center_open{background-position:-62px -18px}
52 .ztree li button.center_close{background-position:-44px -18px}
53 .ztree li button.bottom_open{background-position:-62px -36px}
54 .ztree li button.bottom_close{background-position:-44px -36px}
55 .ztree li button.noline_open{background-position:-62px -72px}
56 .ztree li button.noline_close{background-position:-44px -72px}
57 .ztree li button.root_docu{ background:none;}
58 .ztree li button.roots_docu{background-position:-26px 0}
59 .ztree li button.center_docu{background-position:-26px -18px}
60 .ztree li button.bottom_docu{background-position:-26px -36px}
61 .ztree li button.noline_docu{ background:none;}
62 
63 .ztree li button.ico_open{margin-right:2px; background-position:-80px -16px; vertical-align:top; *vertical-align:middle}
64 .ztree li button.ico_close{margin-right:2px; background-position:-80px 0; vertical-align:top; *vertical-align:middle}
65 .ztree li button.ico_docu{margin-right:2px; background-position:-80px -32px; vertical-align:top; *vertical-align:middle}
66 .ztree li button.edit {margin-right:2px; background-position:-80px -48px; vertical-align:top; *vertical-align:middle}
67 .ztree li button.remove {margin-right:2px; background-position:-80px -64px; vertical-align:top; *vertical-align:middle}
68 
69 .ztree li button.ico_loading{margin-right:2px; background:url(./img/loading.gif) no-repeat scroll 0 0 transparent; vertical-align:top; *vertical-align:middle}
70 
71 
72 ul.tmpTargetzTree {background-color:#FFE6B0; opacity:0.8; filter:alpha(opacity=80)}
73 
74 button.tmpzTreeMove_arrow {width:16px; height:16px; padding:0; margin:2px 0 0 1px; border:0 none; position:absolute;
75     background-color:transparent; background-repeat:no-repeat; background-attachment: scroll;
76     background-position:-80px -80px; background-image:url("./img/zTreeStandard.png"); *background-image:url("./img/zTreeStandard.gif")}
77 
78 ul.zTreeDragUL {margin:0; padding:0; position:absolute; width:auto; height:auto;overflow:auto; background-color:#cfcfcf; border:1px #00B83F dotted; opacity:0.8; filter:alpha(opacity=80)}
79 .zTreeMask {z-index:10000; background-color:#cfcfcf; opacity:0.0; filter:alpha(opacity=0); position:absolute}
80 
81 
82 /*树下拉列表样式*/
83 ul.ztree {margin-top: 10px;border: 1px solid #617775;background: #ffffff;width:220px;height:360px;overflow-y:scroll;overflow-x:auto;}
84 ul.log {border: 1px solid #617775;background: #f0f6e4;width:300px;height:170px;overflow: hidden;}
85 ul.log.small {height:45px;}
86 ul.log li {color: #666666;list-style: none;padding-left: 10px;}
87 ul.log li.dark {background-color: #E3E3E3;}
88 
89 
90 /* level 等级样式*/
91 /*.ztree li button.level0 {
92     display:none;
93 }
94 .ztree li ul.level0 {
95     padding:0;
96     background:none;
97 }*/

然后，是mvc控件扩展，这里命名为DropDownTreeExtension.cs，代码如下：

DropDownTreeExtension.cs

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Web.Mvc;
  6 using System.Web.Routing;
  7 
  8 namespace MVC.Extensions
  9 {
 10     /// <summary>
 11 /// 下拉树控件 
 12 /// 作者：殷懂礼
 13 /// 修正时间：2012-1-5
 14 /// </summary>
 15     public static class OmsDropDownTree
 16     {
 17 
 18         //完整控制
 19         public static MvcHtmlString DropDownTree(this HtmlHelper helper, List<Node> treeSource, string id,
 20             string defaultIndex, string defaultValue, float? menuWidth,
 21             float? menuHeight, object htmlAttribute, bool enableEdit, bool canSelectParent
 22             )
 23         {
 24             return MvcHtmlString.Create(GeneriteDropDownTreeStr(treeSource, id, defaultIndex, defaultValue, menuWidth, menuHeight, htmlAttribute, enableEdit, canSelectParent));
 25         }
 26 
 27         //实施默认index 和  下拉列表的高度和宽度
 28         public static MvcHtmlString DropDownTree(this HtmlHelper helper, List<Node> treeSource, string id, string defaultIndex, float menuWidth, float menuHeight)
 29         {
 30             return MvcHtmlString.Create(GeneriteDropDownTreeStr(treeSource, id, defaultIndex, null, menuWidth, menuHeight));
 31         }
 32 
 33         //添加一个defaultIndex 设置 默认选择值的id 列表默认选择 用于编辑修改页面
 34         public static MvcHtmlString DropDownTree(this HtmlHelper helper, List<Node> treeSource, string id, string defaultIndex)
 35         {
 36             return MvcHtmlString.Create(GeneriteDropDownTreeStr(treeSource, id, defaultIndex));
 37         }
 38 
 39         //默认参数最少  新增时候可以用这个  无默认选择值
 40         public static MvcHtmlString DropDownTree(this HtmlHelper helper, List<Node> treeSource, string id)
 41         {
 42             return MvcHtmlString.Create(GeneriteDropDownTreeStr(treeSource, id));
 43         }
 44 
 45 
 46         /// <summary>
 47 /// 自定义控件文本树控件
 48 /// </summary>
 49 /// <param name="treeSource">树数据源</param>
 50 /// <param name="id">文本树页面元素id属性，注意当前页面id必须唯一，且该id不能用下划线“_”</param>
 51 /// <param name="defaultIndex">默认选择树形列表的数据源索引值及节点的唯一id表示，用于编辑样式时填充数据</param>
 52 /// <param name="defaultValue">文本框默认值</param>
 53 /// <param name="menuWidth">设置列表宽度，默认200px</param>
 54 /// <param name="menuHeight">设置列表宽度，默认自动</param>
 55 /// <param name="htmlAttribute">自定义的一些控件属性</param>
 56 /// <param name="readOnly">默认只读属性</param>
 57 /// <param name="canSelectParent">不可选择父节点</param>
 58 /// <returns></returns>
 59         public static string GeneriteDropDownTreeStr(List<Node> treeSource, string id, string defaultIndex = null, string defaultValue = null,
 60             float? menuWidth = 200, float? menuHeight = null, object htmlAttribute = null, bool? readOnly = false, bool? canSelectParent = false )
 61         {
 62             if (treeSource == null)
 63                 throw new ArgumentNullException("treeSource", "参数treeSource 不能为空");
 64             if (id.IndexOf("_") >= 0)
 65                 return "<h1 style=\"color:red;\">DropDownTree控件id 不能包含下环线‘_’<h1>";
 66 
 67             bool isHead = true;
 68             string callbackValue = "";
 69 
 70             StringBuilder responseStr = new StringBuilder();//返回整体
 71             List<NodeEx> changedList = new List<NodeEx>();
 72 
 73             string menuTreeContent = "Div_menu_" + id;
 74             //responseStr.AppendFormat("<a id='menuBtn' href='#' onclick=\"showMenu('{0}','{1}')\">选择</a>", ID, menuTreeContent);//
 75 
 76 //render List div  and generate a ID for it
 77 
 78             responseStr.AppendFormat(" <div id='{0}' class='menuContent' style='display: none; position: absolute;'> ", menuTreeContent);
 79 
 80             if (isHead)
 81             {
 82                 string height = "";
 83                 if (menuHeight != null)
 84                     height = "height:" + menuHeight.ToString() + "px; ";
 85                 responseStr.AppendFormat(" <ul  id='ul_{0}' class='ztree' style='width: {1}px; {2} margin-top: 0px;'>", id, menuWidth.ToString(), height);//menuContent
 86             }
 87             //canSelectParent = ;
 88             RenderTreeContent(treeSource, changedList, null, id, ref isHead, responseStr, defaultIndex, ref callbackValue, Convert.ToBoolean(canSelectParent));
 89             responseStr.AppendFormat("</div>");
 90 
 91             //render TextBox partial
 92             var textBox = new TagBuilder("input");
 93             textBox.GenerateId(id);
 94             textBox.Attributes.Add("type", "text");
 95 
 96             if (defaultValue != null && defaultIndex == null)
 97             {
 98                 string value = defaultValue.ToString();
 99                 textBox.Attributes.Add("value", value);
100             }
101 
102             if (!string.IsNullOrEmpty(callbackValue))
103             {
104                 textBox.Attributes.Add("value", callbackValue);
105             }
106 
107             if (!Convert.ToBoolean(readOnly))
108             {
109                 textBox.Attributes.Add("readonly", "true");
110             }
111 
112             textBox.Attributes.Add("class", "DropDownTree");//文本样式
113             textBox.MergeAttributes(new RouteValueDictionary(htmlAttribute));
114             return textBox.ToString(TagRenderMode.SelfClosing) + responseStr.ToString();
115         }
116         /// <summary>
117 /// 渲染树控件内容部分
118 /// </summary>
119 /// <param name="treeSource">树数据源</param>
120 /// <param name="processedSource">加工过的数据源</param>
121 /// <param name="parentId">父节点id</param>
122 /// <param name="controlId">树控件id</param>
123 /// <param name="isHead">是否是头节点</param>
124 /// <param name="menuTreeStr">下拉树拼接字符串</param>
125 /// <param name="selectIndex">选中的节点索引值</param>
126 /// <param name="callbackValue">选中节点的显示值</param>
127         public static void RenderTreeContent(List<Node> treeSource, List<NodeEx> processedSource, string parentId, string controlId,
128             ref bool isHead, StringBuilder menuTreeStr, string selectIndex, ref string callbackValue, bool canSelectParent)
129         {
130             List<NodeEx> layerNodes = ExNodeList(treeSource, parentId, processedSource);
131             for (int i = 0; i < layerNodes.Count(); i++)
132             {
133                 string aStyle = "a_node_none";
134                 if (layerNodes[i].Id == selectIndex)
135                 {
136                     callbackValue = layerNodes[i].Text;
137                     aStyle = "curSelectedNode";
138                 }
139 
140                 string bambooStyle = "";
141                 if (isHead)
142                 {
143                     if (layerNodes[i].HasChild)//default open 
144                         bambooStyle = BambooStyle.CenterOpen;
145                     else
146                         bambooStyle = BambooStyle.Head;
147                 }
148                 else if (!layerNodes[i].HasNext)
149                 {
150                     if (!layerNodes[i].HasChild)
151                         bambooStyle = BambooStyle.Bottom;
152                     else
153                         bambooStyle = BambooStyle.CenterOpen;
154                 }
155                 else if (layerNodes[i].HasChild)//还可以增加一个判断 树是展开还是收缩
156                     bambooStyle = BambooStyle.CenterOpen;//default open
157                 else
158                     bambooStyle = BambooStyle.CenterDocu;
159 
160                 string folderFlag = "";
161                 if (layerNodes[i].HasChild)
162                     folderFlag = FolderStyle.FolderOpen.ToString();
163                 else
164                     folderFlag = FolderStyle.Fild.ToString();
165 
166                 if (isHead && layerNodes[i].ParentId == null)
167                 {
168                     isHead = false;
169                 }
170 
171                 if (layerNodes[i].IsLead && layerNodes[i].ParentId != null)
172                 {
173 
174                     if (!layerNodes[i].HasNext && !layerNodes[i].IsLead)
175                         menuTreeStr.AppendFormat("<ul id='ul_{0}_{1}' style='display: block;'>", layerNodes[i].Id, controlId);
176                     else
177                     {
178                         NodeEx parent = processedSource.Single(m => m.Id == layerNodes[i].ParentId);
179                         if (layerNodes[i].HasNext && parent.HasNext)
180                             menuTreeStr.AppendFormat("<ul class='line' id='ul_{0}_{1}' style='display: block;'>", layerNodes[i].Id, controlId);//定义 ul 的id 命名规则 
181                         else
182                             menuTreeStr.AppendFormat("<ul id='ul_{0}_{1}' style='display: block;'>", layerNodes[i].Id, controlId);
183                     }
184 
185                 }
186 
187                 if (!isHead)
188                     menuTreeStr.AppendFormat("<li id='li_{0}_{1}'>", layerNodes[i].Id, controlId);//定义li的id命名规则 
189 
190                 menuTreeStr.AppendFormat("<button title='' id='bt_{0}_{1}' class='{2}' type='button' onclick='bambooClick(this)'></button>", layerNodes[i].Id, controlId, bambooStyle);
191 
192                 //默认 父节点不可被选择
193                 string enableSelect = Convert.ToBoolean(canSelectParent) == true ? "true" : layerNodes[i].HasChild == true ? "false" : "true";
194                 menuTreeStr.AppendFormat("<a title='{0}' id='a_{1}_{2}' class='{3}' canSelect='{4}' >", layerNodes[i].Text, layerNodes[i].Id, controlId, aStyle, enableSelect);
195 
196                 menuTreeStr.AppendFormat("<button type='button' class='{0}' id='btf_{1}_{2}'></button>", folderFlag, layerNodes[i].Id, controlId);
197 
198                 menuTreeStr.AppendFormat("<span class='sp_tree' id='sp_{1}_{2}'>{3}</span>", controlId, layerNodes[i].Id, controlId, layerNodes[i].Text);
199                 menuTreeStr.AppendLine("</a>");
200 
201                 NodeEx flag = layerNodes[i];
202 
203                 RenderTreeContent(treeSource, processedSource, layerNodes[i].Id, controlId, ref isHead, menuTreeStr, selectIndex, ref callbackValue, canSelectParent); //递归调用
204 
205                 if (layerNodes[i].ParentId == flag.ParentId)//遇到兄弟结单 结束标签
206                     menuTreeStr.AppendLine("</li>");
207                 if (layerNodes[i].ParentId == flag.ParentId && !layerNodes[i].HasNext)//结束ul
208                     menuTreeStr.AppendLine("</ul>");
209 
210             }
211 
212         }
213 
214         /// <summary>
215 /// 对原生树节点扩展
216 /// </summary>
217 /// <param name="treeSorce">树数据源</param>
218 /// <param name="parentId">父节点id</param>
219 /// <param name="processedSource">被扩展后的所有节点集合</param>
220 /// <returns>parentId的被扩展后的子节点集合</returns>
221         public static List<NodeEx> ExNodeList(List<Node> treeSorce, string parentId, List<NodeEx> processedSource)
222         {
223             IEnumerable<Node> head = from node in treeSorce where node.ParentId == parentId select node;
224             List<NodeEx> childList = new List<NodeEx>();
225             bool isTop = true;
226             int counter = 0;
227             foreach (Node item in head)
228             {
229                 NodeEx node = new NodeEx();
230                 node.Id = item.Id;
231                 node.Text = item.Text;
232                 node.ParentId = item.ParentId;
233 
234                 if (isTop)// is head only one control by ref 
235                 {
236                     node.IsLead = true;
237                     isTop = false;
238                 }
239                 else
240                     node.IsLead = false;
241 
242                 if (counter == head.Count() - 1)//是否有下一个兄弟
243                     node.HasNext = false;
244                 else
245                     node.HasNext = true;
246 
247                 IEnumerable<Node> hasChild = from child in treeSorce where child.ParentId == item.Id select child;
248 
249                 if (hasChild.Count() > 0)//是否有孩子
250                     node.HasChild = true;
251                 else
252                     node.HasChild = false;
253                 childList.Add(node);
254                 processedSource.Add(node);
255                 counter++;
256             }
257             return childList;
258         }
259 
260     }
261 
262     //树节点
263     public struct Node
264     {
265         /// <summary>
266 /// 节点id
267 /// </summary>
268         public string Id { get; set; }
269         /// <summary>
270 /// 显示值
271 /// </summary>
272         public string Text { get; set; }
273         /// <summary>
274 /// 父节点id
275 /// </summary>
276         public string ParentId { get; set; }
277     }
278 
279     //内部扩展节点结构，类
280     public struct NodeEx
281     {
282         /// <summary>
283 /// id
284 /// </summary>
285         public string Id { get; set; }
286 
287         /// <summary>
288 /// 显示值
289 /// </summary>
290         public string Text { get; set; }
291 
292         /// <summary>
293 /// 父节点id
294 /// </summary>
295         public string ParentId { get; set; }
296 
297         /// <summary>
298 /// 是否是节点开头
299 /// </summary>
300         public bool IsLead { get; set; }//竹头展开样式
301 
302         /// <summary>
303 /// 是否有下个兄弟节点
304 /// </summary>
305         public bool HasNext { get; set; } //最后一个ul 中线
306         /// <summary>
307 /// 是否有孩子节点
308 /// </summary>
309         public bool HasChild { get; set; }//是否有孩子
310     }
311 
312     //bambo的样式（树节点的 展开和关闭控制样式名称）
313     public static class BambooStyle
314     {
315         //根节点，没有字节点时的样式（E字头）
316         public const string Head = "roots_docu";
317         //有子节点，且节点展开
318         public const string CenterOpen = "center_open";
319         //有子节点，且节点关闭
320         public const string CenterClose = "center_close";
321         // 没有子节点
322         public const string CenterDocu = "center_docu";
323         //结尾节点
324         public const string Bottom = "bottom_docu";
325     }
326 
327     //树文件夹或文件样式
328     public static class FolderStyle
329     {
330         //文件夹打开样式
331         public const string FolderOpen = "ico_open";
332         //文件夹关闭样式
333         public const string FolderClose = "ico_close";
334         //文件样式
335         public const string Fild = "ico_docu";
336     }
337 }

最后，是用法了：

在Master页，或者当前页，引入jquery最好是高版本的、DropDownTree.js、DownzTreeStyle.css；

在controller中构造一些数据，代码如下：

Action 方法

 
public ActionResult TextDownTree()
        {

            List<Node> source = new List<Node>();

            for (int i = 0; i < 3; i++)
            {
                Node tree = new Node();
                tree.Id = i.ToString();
                tree.Text = "北京" + i.ToString();
                source.Add(tree);

                for (int j = 0; j < 3; j++)
                {
                    Node child = new Node();
                    child.ParentId = i.ToString();
                    child.Id = i.ToString() + j.ToString();
                    child.Text = "北京_" + i.ToString() + j.ToString();
                    source.Add(child);
                    for (int k = 0; k < 3; k++)
                    {
                        Node childs = new Node();
                        childs.ParentId = child.Id;
                        childs.Id = i.ToString() + j.ToString() + k.ToString();
                        childs.Text = "北京_" + i.ToString() + "_" + j.ToString() + "_" + k.ToString();
                        source.Add(childs);
                    }
                }
            }
            ViewData["tree"] = source;
            ViewData["index"] = "012";//默认选中的值

            string encodeTestStr = "hello viewData <br/><br/>  start wrapper";
            ViewData["description"] = encodeTestStr;

            List<SelectListItem> radioList = new List<SelectListItem>();
            for (int i = 0; i < 5; i++)
            {
                SelectListItem sli = new SelectListItem();
                sli.Selected = false;
                sli.Text = "RTxt-" + i.ToString();
                sli.Value = "RVal-" + i.ToString();
                radioList.Add(sli);
            }

            ViewData["radioList"] = radioList;
            //            ds.Description = ss;
            return View("treeTest");
        }

这里不要忘记对一些类的引用一些类在DropDownTreeExtension.cs中。

在View页面用<% Html.DropDownTree（参数.....）%>就可以完成了，例如：

View Code

1  <%=Html.DropDownTree(ViewData["tree"] as List<Node>,"test")%>
2     <%=Html.DropDownTree(ViewData["tree"] as List<Node>, "test1", ViewData["index"].ToString())%>
3     <%=Html.DropDownTree(ViewData["tree"] as List<Node>, "test2")%>
4     <%:Html.DropDownTree(ViewData["tree"] as List<Node>, "test3", ViewData["index"].ToString(), null, 300, 100, new { parenid="899-"},true,true)%>

一些效果：

日历控件

第二个是日历控件，在网上查了一个普通的日历控件，也生成了下拉的日历样子，但是一些脚本比如选择年月，需要一些时间，最后只好套用了My97 DatePicker，这样以来其实简单多了。

第一步：下载 My97 DatePicker，我用的是 My97 DatePicker 4.72 Release。在Script文件夹下新增Calendar文件夹将My97相关文件放入这个文件夹中，如：

这些文件添加完成之后，在页面只需要引用WdataPicker.js即可（view 页面或者Master页面加载），例如：

My97 js 引用

    <!--日历控件引用开始-->
    <script src="http://www.cnblogs.com/Scripts/Calendar/WdatePicker.js" type="text/javascript"></script>
    <!--日历控件引用结束-->

然后mvc的控件扩展，主要用到TextBox然后加一个Class名为Wdate，代码如下：

.Wdate
{
    border: #999 1px solid; /*height: 20px;*/
    background: url("./images/datePicker.gif") no-repeat right;//My97 picture
}

CalendarExtension.cs

    /// <summary>
    /// 日期控件 
    /// </summary>
    public static class CalendarExtensions
    {
        public static MvcHtmlString Calendar(this HtmlHelper helper)
        {
            StringBuilder sb = new StringBuilder();
            TagBuilder textCalendar = new TagBuilder("input");
            textCalendar.AddCssClass("Wdate");
            textCalendar.Attributes.Add("type", "text");
            textCalendar.Attributes.Add("onclick", "WdatePicker()");
            return MvcHtmlString.Create(textCalendar.ToString(TagRenderMode.SelfClosing));
        }


        public static MvcHtmlString Calendar(this HtmlHelper helper, string id)
        {
            StringBuilder sb = new StringBuilder();
            TagBuilder txtCalendar = new TagBuilder("input");
            txtCalendar.AddCssClass("Wdate");
            txtCalendar.Attributes.Add("type", "text");
            txtCalendar.GenerateId(id);
            txtCalendar.Attributes.Add("onclick", "WdatePicker()");
            return MvcHtmlString.Create(txtCalendar.ToString(TagRenderMode.SelfClosing));
        }

        public static MvcHtmlString Calendar(this HtmlHelper helper, string id, DateTime defaultDate)
        {
            StringBuilder sb = new StringBuilder();
            TagBuilder txtCalendar = new TagBuilder("input");
            txtCalendar.AddCssClass("Wdate");
            txtCalendar.Attributes.Add("type", "text");
            txtCalendar.GenerateId(id);
            txtCalendar.Attributes.Add("value", string.Format("{0:d}", defaultDate).Replace('/','-'));
            txtCalendar.Attributes.Add("onclick", "WdatePicker()");
            return MvcHtmlString.Create(txtCalendar.ToString(TagRenderMode.SelfClosing));

        }
}

这样用法就很简单了，在view页面

    <% var date = new DateTime(2011, 12, 12); %>
    <%=Html.Calendar("tody",date)%>

效果：

这个My97如果想显示中文只需要在他的confg.js中配置，还有皮肤页面里面。

CheckButtonList和RadioButtonList

这两个控件其实是一样的代码，只是，根据传入参数的类型，一个生成的Radio一个生成的是CheckBox，其实也是直接生成的html然后把这些Radio 或者 checkbox 套到td中，

具体实现的C#代码如下：

CheckListExtension.cs

    /// <summary>
    /// radiobuttonList 和 checkboxList
    /// author：殷懂礼
    /// 修改时间：2012-1-16
    /// </summary>
    public static class CheckListExtensions
    {
        /// <summary>
        /// 内用  生成radio 或者 checkbox 并 可排列
        /// </summary>
        /// <param name="htmlHelper"></param>
        /// <param name="id">控件id</param>
        /// <param name="items">列表项源</param>
        /// <param name="canMultichoice">是否允许多选（false：radio；true: checkbox）</param>
        /// <param name="htmlAttribute">自定义属性</param>
        /// <param name="repeatColumns">排列列数</param>
        /// <param name="repeatDirection">排列方向</param>
        /// <returns></returns>
        public static MvcHtmlString InternalCheckButtonList(this HtmlHelper htmlHelper, string id, IEnumerable<SelectListItem> items, bool canMultichoice = false, object htmlAttribute = null,
            int repeatColumns = 1, RepeatDirection repeatDirection = RepeatDirection.Horizontal)
        {
            string mainTagId = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(id);
            if (string.IsNullOrEmpty(mainTagId))
            {
                throw new ArgumentException("filed can't be null or empty !", "name");
            }

            TagBuilder tableTag = new TagBuilder("table");
            tableTag.AddCssClass("radio-main");

            StringBuilder tableInnerContent = new StringBuilder();
            if (repeatColumns == 1)//默认单行或列排列
            {
                if (repeatDirection == RepeatDirection.Horizontal)//默认 水平 单排列
                {
                    var trTag = new TagBuilder("tr");
                    foreach (var item in items)
                    {
                        var tdTag = RenderRadioTd(htmlHelper, mainTagId, item, canMultichoice, htmlAttribute);
                        trTag.InnerHtml = tdTag.ToString();
                        tableInnerContent.Append(trTag.ToString());
                    }
                }
                else//垂直
                {
                    foreach (var item in items)
                    {
                        var trTag = new TagBuilder("tr");
                        var tdTag = RenderRadioTd(htmlHelper, mainTagId, item, canMultichoice, htmlAttribute);
                        trTag.InnerHtml = tdTag.ToString();
                        tableInnerContent.Append(trTag.ToString());
                    }
                }
            }
            else//多行或列 排列
            {
                int itemsCounter = items.Count();
                bool isPerfectDivid = itemsCounter % repeatColumns == 0 ? true : false;
                int repeatNumber = itemsCounter / repeatColumns; //重复次数
                List<SelectListItem> itemList = items.ToList();

                StringBuilder trContent = new StringBuilder();

                TagBuilder trTag = new TagBuilder("tr");

                for (int i = 0; i < itemsCounter; i++)
                {
                    TagBuilder tdTag = RenderRadioTd(htmlHelper, mainTagId, itemList[i], canMultichoice, htmlAttribute);
                    trContent.Append(tdTag.ToString());
                    if (i != 0 && ((i + 1) % repeatColumns) == 0 && (i + 1) / repeatColumns != repeatNumber)
                    {
                        trTag.InnerHtml = trContent.ToString();
                        tableInnerContent.Append(trTag.ToString());
                        trContent.Clear();
                    }
                    else if (i == itemsCounter - 1)
                    {
                        trTag.InnerHtml = trContent.ToString();
                        tableInnerContent.Append(trTag.ToString());
                    }
                }
            }

            tableTag.InnerHtml = tableInnerContent.ToString();
            return MvcHtmlString.Create(tableTag.ToString());
        }
        /// <summary>
        /// 生成内部 的 td 所有内容
        /// </summary>
        /// <param name="htmlHelper"></param>
        /// <param name="mainTagName">主标签id</param>
        /// <param name="item">选项</param>
        /// <param name="canMultichoice">radio or checkbox</param>
        /// <param name="htmlAttribute">自定义属性</param>
        /// <returns></returns>
        private static TagBuilder RenderRadioTd(HtmlHelper htmlHelper, string mainTagName, SelectListItem item, bool? canMultichoice = false, object htmlAttribute = null)
        {
            var tdTag = new TagBuilder("td");
            var rbValue = item.Value ?? item.Text;
            var rbName = mainTagName + "_" + rbValue;

            //generate radio
            var radioTag = new TagBuilder("input");
            radioTag.GenerateId(rbName);
            radioTag.MergeAttribute("value", rbValue);

            if (item.Selected)
                radioTag.MergeAttribute("checked", item.Selected.ToString());

            string checkType = "";
            if (Convert.ToBoolean(canMultichoice))
                checkType = "checkbox";
            else
                checkType = "radio";

            radioTag.Attributes.Add("type", checkType);
            radioTag.MergeAttribute("name", mainTagName);
            radioTag.MergeAttributes(new RouteValueDictionary(htmlAttribute));

            var labelTag = new TagBuilder("label");
            labelTag.MergeAttribute("for", rbName);
            labelTag.MergeAttribute("id", rbName + "_label");
            labelTag.InnerHtml = rbValue;
            tdTag.InnerHtml = radioTag.ToString() + labelTag.ToString();
            return tdTag;
        }
    }

富文本编辑器

用kinderEdit 使用方法特别注意，第一需要在web.config中<system.web> <httpRuntime requestValidationMode="2.0"/>配置这个属性，第二，在后台方法中配置[ValidateInput(false)]。第三，在.aspx 页面配置 ValidateRequest=“false”

posted on 2012-06-25 17:28 代岳强阅读(5471) 评论(1) 编辑收藏举报