下拉框 tree 基于 EasyUi

public string DataTableToJson()
		{
			string dataJson = "";
			string temp = "";
			string tempChildren = "";
			int id = 0;
			int idChildren = 0;
			DataTable dt = GJPDbHelper.DAL.ExecuteDataSet("select distinct  品牌,类型 from dbo.AIRB_MMTREE where treeType='1'").Tables[0];
			if (dt.Rows.Count > 0)
			{
				dataJson = "[";
				foreach (System.Data.DataRow dr in dt.Rows)
				{
					if (temp == "" || temp != dr[0].ToString())
					{
						if (id == 0)
						{
							id++;
							idChildren = 0;
							idChildren++;
							temp = dr[0].ToString();
							tempChildren = dr[1].ToString();
							dataJson = dataJson + "{"id":" + id + ","text":"" + dr[0] + "","children":[{"id":" + Convert.ToInt32(id.ToString()+idChildren.ToString()) + ","text":"" + dr[1] + ""}";
						}
						else
						{
							id++;
							idChildren = 0;
							idChildren++;
							temp = dr[0].ToString();
							tempChildren = dr[1].ToString();
							dataJson = dataJson + "]},{"id":" + id + ","text":"" + dr[0] + "","children":[{"id":" + Convert.ToInt32(id.ToString() + idChildren.ToString()) + ","text":"" + dr[1] + ""}";
						}
					}
					else
					{
						idChildren++;
						dataJson = dataJson + ",{"id":" + Convert.ToInt32(id.ToString() + idChildren.ToString()) + ","text":"" + dr[1] + ""}";
					}
				}
				dataJson = dataJson + "]}]";
			}
			return dataJson;
		}

function BindRoleList(value) {
	        $(value).combotree({
	            data: <%=DataTableToJson()%>,
			    //url: '/DesktopModules/ARB_OrgSys/GetOrgList.ashx',
			    valueField: 'id',
			    textField: 'text',
			    multiple:true
			});
        }

	    $(document).ready(function () {
            BindRoleList("#cc");
            $("#cc").combobox({
                onChange: function (n,o) {
                    document.getElementById("<%=tree.ClientID%>").value=$("#cc").combotree("getText");
                }
 
            });
            
        });

<input id="cc" class="easyui-combotree" style=" 100%" />