Asp.net mvc3 custom htmlhelper Control

In Asp.net MVC, every HTML Control Returns mvchtmlstring, which inherits htmlstring.
The following is a custom HTML Control for displaying male and female. You can directly call this custom HTML control when creating a page.
Other HTML controls return htmlhelper, therefore, the same type must be returned during customization.
Create an HTML control to be customized in the controls folder.
Code as follows:

Using system. web. MVC; using system. text; namespace system. web. MVC. HTML {// <summary> /// display the customized control of gender and gender // </Summary> Public static class labelgenderextensions {// <summary> // obtain the value hour: 1 indicates male, the value is 2, indicating female /// the selected male /// </Summary> /// <Param name = "helper"> </param> /// <returns> </returns> Public static mvchtmlstring labelgender (this htmlhelper helper) {stringbuilder STR = new stringbuilder (); Str. append ("<input type = 'Radio 'name = 'sex 'value = 1 checked = 'checked'> </input>"); Str. appendformat ("<label for = '{0}'> {1} </label>", "man", "male"); // display the male value Str. append ("<input type = 'Radio 'name = 'sex' value = 2> </input>"); Str. appendformat ("<label for = '{0}'> {1} </label>", "female", "female "); // display female value return New mvchtmlstring (Str. tostring ());}}}

The value to be returned can also be passed in according to the parameter method.

On the page, you only need to call: @ html. labelgender ()

Display

Note:
1. Note that the namespace for creating a class must be consistent with its @ html

2. The created class must be a static class. The naming rule is generally suffixed with extensions.

The htmlhelper control can be expanded to provide great convenience for creating your own HTML tags.