用C#从数据库动态生成AdminLTE菜单的一种方法

 1   public  class AdminLTEHelper
 2     {
 3         /// <summary>
 4         /// 根据DataTable生成AdminLTE的多级菜单目录
 5         /// GetTreeJsonByTable(datatable, "id", "title", "pid", "0","menulevel");
 6         /// </summary>
 7         /// <param name="tabel">数据源</param>
 8         /// <param name="idCol">ID列</param>
 9         /// <param name="txtCol">Text列</param>
10         /// <param name="rela">关系字段(字典表中的树结构字段)</param>
11         /// <param name="pId">父ID值(0)</param>
12         /// <param name="colmenulevel">菜单显示层级列名</param>
13         public StringBuilder result = new StringBuilder();
14         public StringBuilder sb = new StringBuilder();
15     
16         public void GetTreeJsonByTable(DataTable tabel, string idCol, string txtCol, string rela, object pId,string colmenulevel)
17         {
18 
19             result.Append(sb.ToString());
20             sb.Clear();
21 
22             if (tabel.Rows.Count > 0)
23             {
24                
25                 string filer = string.Format("{0}=‘{1}‘", rela, pId);
26                 DataRow[] rows = tabel.Select(filer);
27                 if (rows.Length > 0)
28                 {
29                     foreach (DataRow row in rows)
30                     {
31                         if (tabel.Select(string.Format("{0}=‘{1}‘", rela, row[idCol])).Length > 0)
32                         {
33                             //第一层级,名称在<span>多级菜单</span>中 class为treeview
34                             //colmenulevel为menulevel，为菜单的显示层级，可以在后台进行配置
35                             //和树的层级可能不同
36                             if (row[colmenulevel].ToString() == "1")
37                             {
38                                 sb.Append("<li class=\"treeview\"><a href=\"#\"><i class=\"fa fa-folder\"></i><span>" + row[txtCol] + "</span><span class=\"pull-right-container\"> <i class=\"fa fa-angle-left pull-right\"></i></span></a>");
39 
40                             }
41                             else
42                             {
43                                
44                                sb.Append("<li><a href=\"#\"><i class=\"fa fa-folder\"></i>" + row[txtCol] + "<span class=\"pull-right-container\"> <i class=\"fa fa-angle-left pull-right\"></i></span></a>");
45                              
46                             }
47                             sb.Append("<ul class=\"treeview-menu\">");
48                             GetTreeJsonByTable(tabel, idCol, txtCol, rela, row[idCol], colmenulevel);
49                             sb.Append("</ul>");
50                             sb.Append("</li>");
51                             result.Append(sb.ToString());
52                             sb.Clear();
53                            
54                         }
55                         else
56                         {
57                             //isleaf=true
58                             if (row[colmenulevel].ToString() == "1")
59                             {
60                                 //顶级菜单，标题显示在span中，否则显示图标时，标题不能隐藏
61                                 sb.Append("<li class=\"treeview\"><a href=\"#\" moid=\"" + row[idCol] + "\",text=\"" + row[txtCol] + "\",isleaf=\"true\"" + ",url=\"" + row["url"] + "\"><i class=\"fa fa-folder\"></i><span>" + row[txtCol] + "</span></a></li>");
62 
63                             }
64                             else
65                             {
66                                 sb.Append("<li><a href=\"#\" moid=\"" + row[idCol] + "\",text=\"" + row[txtCol] + "\",isleaf=\"true\"" + ",url=\"" + row["url"] + "\"><i class=\"fa fa-folder\"></i>" + row[txtCol] + "</a></li>");
67                             }
68 
69                             //sb.Append("<li><a href=\"#\" moid=\"" + row[idCol] + "\",text=\"" + row[txtCol] + "\",isleaf=\"true\"" + ",url=\"" + row["url"] + "\"><i class=\"fa fa-folder\"></i>" + row[txtCol] + "</a></li>");
70 
71                             result.Append(sb.ToString());
72                             sb.Clear();
73                         }
74                         result.Append(sb.ToString());
75                         sb.Clear();
76                       
77                     }
78                     
79                 }
80               
81                 result.Append(sb.ToString());
82                 sb.Clear();
83 
84             }
85 
86         }
87     }

6 调用

7 测试

验证生成的菜单结构是否正确，首先看看显示的层级结构和数据库是否一致，另外查看单击上级，是否可以展开，最后注意的是，在左边菜单收缩后，只显示图标，鼠标移动到图标上后，并能正确显示子菜单：

8 应用

假设菜单是这样的：

用jquery可以在单击菜单某项时，打开页面

核心文件开源在Github:https://github.com/JackWangCUMT/AdminLTE-Menu-Generate。

用C#从数据库动态生成AdminLTE菜单的一种方法

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