.NET MVC5专题(各种扩展工具)

视图引擎扩展:用于不同浏览器展示不同页面

/// <summary>
/// razor视图引擎扩展
/// </summary>
public class CustomerViewEngine : RazorViewEngine
{
    /// <summary>
    /// 可以分开部署不同语种
    /// </summary>
    /// <param name="engineName"></param>
    public CustomerViewEngine(string engineName)
    {
        base.ViewLocationFormats = new[]
            {
                "~/Views" + engineName + "/{1}/{0}.cshtml",
                "~/Views" + engineName + "/Shared/{0}.cshtml"
            };

        base.PartialViewLocationFormats = new[]
            {
                "~/Views" + engineName + "/{1}/{0}.cshtml",
                "~/Views" + engineName + "/Shared/{0}.cshtml"
            };

        base.AreaViewLocationFormats = new[]
            {
                "~Areas/{2}/Views" + engineName + "/{1}/{0}.cshtml",
                "~Areas/{2}/Views" + engineName + "/Shared/{0}.cshtml"
            };

        base.AreaPartialViewLocationFormats = new[]
            {
                "~Areas/{2}/Views" + engineName + "/{1}/{0}.cshtml",
                "~Areas/{2}/Views" + engineName + "/Shared/{0}.cshtml"
            };
    }

    public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache)
    {
        this.SetEngine(controllerContext);
        return base.FindView(controllerContext, viewName, masterName, useCache);
    }

    public override ViewEngineResult FindPartialView(ControllerContext controllerContext, string partialViewName, bool useCache)
    {
        this.SetEngine(controllerContext);
        return base.FindPartialView(controllerContext, partialViewName, useCache);
    }

    /// <summary>
    /// 根据条件自行设置,目前是chrome浏览器就展示默认的
    /// 不是chrome浏览器的话就展示/Themes/Eleven下的
    /// 可以直接测试是移动端还是pc端
    /// 然后写入cookie
    /// </summary>
    private void SetEngine(ControllerContext controllerContext)
    {
        string engineName = "/Themes/XT";
        //既然都能拿到HttpContext 那真的是可以为所欲为!
        //浏览器类型/版本  移动端还是PC端   多语言网站(cookie).....
        if (controllerContext.HttpContext.Request.UserAgent.IndexOf("Chrome/65") >= 0)
        {
            engineName = null;
        }

        //if (controllerContext.HttpContext.Request.IsMobile())//检测是不是移动端
        //{
        //    engineName = null;
        //}

        base.ViewLocationFormats = new[]
           {
                "~/Views" + engineName + "/{1}/{0}.cshtml",
                "~/Views" + engineName + "/Shared/{0}.cshtml"
            };

        base.PartialViewLocationFormats = new[]
            {
                "~/Views" + engineName + "/{1}/{0}.cshtml",
                "~/Views" + engineName + "/Shared/{0}.cshtml"
            };

        base.AreaViewLocationFormats = new[]
            {
                "~Areas/{2}/Views" + engineName + "/{1}/{0}.cshtml",
                "~Areas/{2}/Views" + engineName + "/Shared/{0}.cshtml"
            };

        base.AreaPartialViewLocationFormats = new[]
            {
                "~Areas/{2}/Views" + engineName + "/{1}/{0}.cshtml",
                "~Areas/{2}/Views" + engineName + "/Shared/{0}.cshtml"
            };
    }
}

页面输出html各种扩展,用法@html.方法名()

public static class HtmlExtension
    {
        /// <summary>
        /// 自定义一个@html.Submit()
        /// </summary>
        /// <param name="helper"></param>
        /// <param name="value">value属性</param>
        /// <param name="defaultClass">预设的class</param>
        /// <returns></returns>
        public static MvcHtmlString Submit(this HtmlHelper helper, string value, string defaultClass = "btn btn-default")
        {
            var builder = new TagBuilder("input");
            builder.MergeAttribute("type", "submit");
            builder.MergeAttribute("value", value);
            builder.MergeAttribute("class", defaultClass);
            builder.ToString(TagRenderMode.EndTag);
            return MvcHtmlString.Create(builder.ToString());
        }

        /// <summary>
        /// 换行
        /// </summary>
        /// <param name="helper"></param>
        /// <returns></returns>
        public static MvcHtmlString Br(this HtmlHelper helper)
        {
            var builder = new TagBuilder("br");

            //builder.ToString(TagRenderMode.SelfClosing);//生成<br><br>
            return MvcHtmlString.Create(builder.ToString(TagRenderMode.SelfClosing));
        }

        public static MvcHtmlString Image(this HtmlHelper helper, string src, string alt, string title, object htmlAttributes, string defaultClass = "btn btn-default")
        {
            var builder = new TagBuilder("img");
            builder.MergeAttribute("src", src);
            builder.MergeAttribute("alt", alt);
            builder.MergeAttribute("title", title);
            builder.MergeAttribute("class", defaultClass);
            builder.MergeAttributes<string, object>(new RouteValueDictionary(htmlAttributes));
            return MvcHtmlString.Create(builder.ToString(TagRenderMode.SelfClosing));
        }

        public static MvcHtmlString Link(this HtmlHelper helper, string href, string linkText, string defaultClass = "btn btn-default")
        {
            var builder = new TagBuilder("a");
            builder.MergeAttribute("href", href);
            builder.SetInnerText(linkText);
            builder.MergeAttribute("class", defaultClass);
            return MvcHtmlString.Create(builder.ToString(TagRenderMode.Normal));
        }

        public static MvcHtmlString Button(this HtmlHelper helper, string id, string text, string onClick = null)
        {
            var builder = new TagBuilder("input");
            builder.GenerateId(id);
            builder.MergeAttribute("type", "button");
            builder.MergeAttribute("value", text);
            if (!string.IsNullOrWhiteSpace(onClick)) builder.MergeAttribute("onclick", onClick);
            builder.MergeAttribute("id", id);
            builder.MergeAttribute("name", id);
            return MvcHtmlString.Create(builder.ToString());
        }

        /// <summary>
        /// 一个展示当前网站的view文件的
        /// </summary>
        /// <param name="helper"></param>
        /// <returns></returns>
        public static MvcHtmlString ListViewAssemblies(this HtmlHelper helper)
        {
            TagBuilder ul = new TagBuilder("ul");
            foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies().Where(a => a.FullName.StartsWith("App_Web_")))//view编辑后生成的都是以App_Web_开头的,
            {
                TagBuilder li = new TagBuilder("li");
                li.InnerHtml = string.Format("类型完整名称:{0}", assembly.FullName);
                ul.InnerHtml += li.ToString();

                TagBuilder li2 = new TagBuilder("li");
                li2.InnerHtml = string.Format("dll地址:{0}", assembly.Location);
                ul.InnerHtml += li2.ToString();
            }
            return MvcHtmlString.Create(ul.ToString());
        }
    }

判断访问设备的扩展

/// <summary>
        /// Request.Browser.IsMobileDevice
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public static bool IsMobile(this HttpRequestBase request)
        {
            string userAgent = request.ServerVariables["HTTP_USER_AGENT"];
            Regex b = new Regex(@"(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino", RegexOptions.IgnoreCase | RegexOptions.Multiline);
            Regex v = new Regex(@"1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-", RegexOptions.IgnoreCase | RegexOptions.Multiline);
            return (b.IsMatch(userAgent) || v.IsMatch(userAgent.Substring(0, 4)));
        }

自定义jsonRsult扩展

/// <summary>
    /// 自定义扩展json格式result
    /// </summary>
    public class NewtonsoftJsonResult : ActionResult
    {
        private object _Data = null;

        public NewtonsoftJsonResult(object data)
        {
            _Data = data;
        }

        public override void ExecuteResult(ControllerContext context)
        {
            var response = context.HttpContext.Response;
            response.ContentType = "application/json";
            response.Write(JsonHelper.ToJson(this._Data));
        }
    }

自定义XMLResult扩展

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转载自blog.csdn.net/weixin_41181778/article/details/103951043