ASP.NET MVC HtmlHelper如何扩展
usingSystem;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Web;
usingSystem.Web.Mvc;
namespaceTestMvcHelper
{
publicstaticclassHtmlExtensions
{
publicstaticMvcHtmlStringSubmit(thisHtmlHelperhelper,stringvalue)
{
varbuilder=newTagBuilder("input");//使我们创建的标签名字设为input
builder.MergeAttribute("type","submit");//添加属性type="submit"
builder.MergeAttribute("value",value);
returnMvcHtmlString.Create(builder.ToString(TagRenderMode.SelfClosing));
}
}
}
(2)、Submit方法名是对应视图中调用的名称。(如：@Html.Submit("提交"))
(3)、thisHtmlHelper
(4)、varbuilder=newTagBuilder("input");
(5)、builder.MergeAttribute("type","submit")
(6)、builder.MergeAttribute("value",value);
(7)、TagRenderMode.SelfClosing
(8)、TagRenderMode是个枚举类，分别为
(9)、MvcHtmlString作为返回值是为了使返回值不被转义，比如"<"不会被转成"<"。
@Html.Submit("提交")
http://www.CodeHighlighter.com/-->1///<summary>
///带描述的链接扩展方法
///</summary>
///<paramname="htmlHelper">要扩展的HtmlHelper类</param>
///<paramname="title">标题</param>
///<paramname="url">链接地址</param>
///<paramname="description">描述</param>
///<returns>HTML代码</returns>
publicstaticMvcHtmlStringLinkWithDescription(thisHtmlHelperhtmlHelper,stringtitle,stringurl,stringdescription)
{
//生成与标题链接有关的HTML代码
TagBuildertitleContainer=newTagBuilder("p");//标题链接容器p
TagBuildertitleLink=newTagBuilder("a");//标题中的文字要有链接,所以包含在a标签内
titleLink.MergeAttribute("href",url);//为a添加href属性并指定链接地址
titleLink.SetInnerText(title);//标题文字
titleContainer.InnerHtml=titleLink.ToString();//将a放到p中
titleContainer.AddCssClass("LinkTitle");//为标题添加样式
//生成与链接描述有关的HTML代码
TagBuilderdescriptionContainer=newTagBuilder("p");//连接描述容器p
descriptionContainer.InnerHtml=description;//描述文字
descriptionContainer.AddCssClass("LinkDescription");//为描述添加样式
//将上述元素放入一个DIV中
TagBuilderdiv=newTagBuilder("div");
div.InnerHtml=string.Format("{0}{1}",titleContainer.ToString(),descriptionContainer.ToString());
//返回生成的HTML代码
returnMvcHtmlString.Create(div.ToString());
}