eg3：扩展HtmlHelper
扩展方法类
1 public static class HtmlExtension
2 {
3 /// <summary>
4 /// 输出表单提交按钮
5 /// </summary>
6 /// <param name="htmlHelper">HtmlHelper对象</param>
7 /// <param name="name"></param>
8 /// <param name="value"></param>
9 /// <returns></returns>
10 public static MvcHtmlString Submit(this HtmlHelper htmlHelper,string name,string value)
11 {
12 //TagBuilder 用于辅助创建标记
13 var builder = new TagBuilder("input");
14 builder.MergeAttribute("type","submit");
15 //设置value属性
16 builder.MergeAttribute("value",value);
17 //设置name属性
18 builder.MergeAttribute("name",name);
19 //设置id属性
20 builder.GenerateId(name);
21 return MvcHtmlString.Create(builder.ToString());
22 }
23
24 public static MvcHtmlString Submit(this HtmlHelper htmlHelper, string name, string value, object htmlAttributes)
25 {
26 //TagBuilder 用于辅助创建标记
27 var builder = new TagBuilder("input");
28 builder.MergeAttribute("type", "submit");
29 //设置value属性
30 builder.MergeAttribute("value", value);
31 //设置name属性
32 builder.MergeAttribute("name", name);
33 //设置id属性
34 builder.GenerateId(name);
35 //设置其他属性
36 builder.MergeAttributes(new RouteValueDictionary(htmlAttributes));
37 return MvcHtmlString.Create(builder.ToString());
38 }
39 }
//页面中进行使用
1 @{
2 Layout = null;
3 }
4 @using ExtensionMethods.App_Code;
5
6 <!DOCTYPE html>
7
8 <html>
9 <head>
10 <meta name="viewport" content="width=device-width" />
11 <title>Index</title>
12 </head>
13 <body>
14 <div>
15 @Html.Submit("login","登录")
16
17 @Html.Submit("login", "登录", new { @class="opt_sub",title="点击提交"})
18 </div>
19 </body>
20 </html>