GetPermission

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public void GetPermission(List<PermissionEntity> permissions, int index, string pid, JArray root)         {             PermissionEntity entity = null;             if (index >= permissions.Count)             {                 return;             }             else if (index != -1)//一级菜单             {                 entity = permissions[index];             }             else             {                 //子菜单                 if (!string.IsNullOrEmpty(pid))                 {                     entity = permissions.Where(d => d.Id == pid).FirstOrDefault();                 }                 else                 {                     return;                 }             }               var node = new JObject();             node.Add("id", entity.Id);             node.Add("path", entity.Path);             node.Add("name", entity.Name);             node.Add("redirect", entity.Name);             var node2 = new JObject();             node2.Add("title", entity.Title);             node2.Add("icon", entity.Icon);             node.Add("meta", node2);             node.Add("ability", new JArray());             var childeData = new JArray();             var childe = permissions.Where(d => d.Pid == entity.Id).FirstOrDefault();             if (childe != null)             {                 GetPermission(permissions, -1, childe.Id, childeData);             }             node.Add("children", childeData);               if (index != -1)//一级菜单查询             {                 GetPermission(permissions, ++index, "", root);             }             root.Add(node);               var currentIndex = permissions.IndexOf(entity);             permissions.RemoveAt(currentIndex); //删除已添加节点项         }