未完待续...

 

案例1：按钮权限校验，无权限不显示，利用TagHelper控制元素是否显示

    [HtmlTargetElement("tc-permission", TagStructure = TagStructure.NormalOrSelfClosing)]
    public class TCPermissionTagHelper : TagHelper
    {
        private IPermissionContext permissionContext = null;
        public TCPermissionTagHelper(IPermissionContext permissionContext)
        {
            this.permissionContext = permissionContext;
        }

        public string[] Permissions { get; set; }
        public string Permission { get; set; }

        public override void Process(TagHelperContext context, TagHelperOutput output)
        {
            if (context == null)
            {
                throw new ArgumentNullException(nameof(context));
            }

            if (output == null)
            {
                throw new ArgumentNullException(nameof(output));
            }
            output.TagName = null;
            if (!string.IsNullOrEmpty(Permission))
            {
                Permissions = Permission.SplitToArray<string>();
            }
            //HasPermission:根据UserID、按钮权限编码判断用户是否有此按钮权限，如果无权就不输出
            if (Permissions == null || Permissions.Length == 0 || !permissionContext.HasPermission(Permissions))
            {
                output.SuppressOutput();
                return;
            }

        }
    }

页面中添加：

<tc-permission permission="@Permissions.系统模块.账户管理.添加">
            <a id="btnAdd" class="btn  btn-primary" onclick="cache.add(); return false;">添加</a>
        </tc-permission>