Summary of ASP. net mvc htmlhelper class methods

Auxiliary and extension methods of the htmlhelper class:

(1) actionlink generates a specific controller behavior connection

<% = Html. actionlink ("edit", "edit", "book", new {id = model. ID}, new {@ class = "bookdetail"}) %>
Details:

Edit, Which is linktext, specifically the displayed string
Edit, corresponding to actionname;
Book, controller;
New {id = model. ID}, defined for the ID of the generated element;
New {@ class = "bookdetail"}, the tag element is added to the element

(2) antiforgerytoken generates a hidden form field, which can be used with the validateantiforgerytoken attribute to ensure that the request is not modified.

Details:

If you want to protect multiple forms of your application from mutual independence, antiforgerytoken will generate different anti-counterfeit signs

<% = Html. antiforgerytoken ("somearbitrarystring") %>

[Validateantiforgerytoken (salt = "somearbitrarystring")]
Public viewresult submitupdate ()
{
//... Etc
}

(3) attributeencode: Provides the htmlattributeencode function.

Details:

<% = Html. attributeencode (URL. Action ("login") %>

(4) dropdownlist is generated based on a pair of key-value pairs.

Details:

Html. dropdownlist (string name, ienumerable <selectlistitem> selectlist, string optionlabel, object htmlattributes)

Name: select the name of the element and bind it to the model attribute of the element view.

Selectlist: Option List,

Optionlabel: similar to "select ..." Optional default labels

Htmlattributes: attributes that can be added

Usage

 

Code

List <selectlistitem> items = new list <selectlistitem> ();
Items. Add (New selectlistitem {text = "Ming", value = "1 "});
Items. Add (New selectlistitem {text = "sorting ing", value = "2", selected = true });
Items. Add (New selectlistitem {text = "running", value = "3 "});
Viewdata ["listitems"] = items;

 

<% = Html. dropdownlist ("listitems") %>

(5) encode encoded strings to prevent cross-site scripting attacks

Usage
<% = Html. encode ("<SCRIPT src = \" J. js \ "> <Div background = 'javascript: Alert (''); '/> ") %>
Encoding result
& Lt; script src = & quot; J. JS & quot; & gt; & lt;/script & gt; & lt; Div background = 'javascript: Alert (''); '/& gt;

 

(6) Hidden generate hidden fields in the form

<% = Html. Hidden ("searchtype", 1) %>

Foreground source code:

<Input id = "searchtype" name = "searchtype" type = "hidden" value = "1"/>

(7) ListBox generates a drop-down Box Based on column key-value pairs

Usage:

Code

<% = Html. ListBox (
"Optionslist ",
New []
{
New selectlistitem
{
TEXT = "option 1 ",
Value = "opt1"
},
New selectlistitem
{
TEXT = "option 2 ",
Value = "opt2"
},
New selectlistitem
{
TEXT = "option 3 ",
Value = "opt3"
}
},
"Choose an option"
) %>

 

Foreground source code:

<Select length = "16" id = "optionslist" multiple = "multiple" name = "optionslist">

<Option value = "opt1"> Option 1 </option>
<Option value = "opt2"> Option 2 </option>
<Option value = "opt3"> Option 3 </option>
</SELECT>
(8) pasword form generation Password Field

Usage:

<% = Html. Password ("password", viewdata ["password"]) %>
(9) textbox generation text box

Usage:

<% = Html. Textbox ("name", model. Contact. Name) %>

Foreground source code:

<Input id = "name" name = "name" type = "text" value = "Alan"/>
(10) button to generate a button

The latest version 2.0.0.0mvc is no longer available.
(11) checkbox generation checkbox

Usage:

<% = Html. checkbox ("A") %>

Foreground source code:

<Input id = "A" name = "A" type = "checkbox"/>
(12) HTML form generated by beginform

Usage:

<% Using (html. beginform (model. postaction, "home", formmethod. Post ))
{%>

Foreground source code:

<Form action = "/home/Post" method = "Post">

(13) Image Generation of image tags

Reference an image

<% = Html. Image ("~ /Images/bigwave.jpg ") %> <br/>

Set Name and width
<% = Html. Image ("~ /Images/bigwave.jpg "," mywave ", new {width =" 30px "}) %> <br/>
(14) mailto generate an email connection

Simple Email:
<% = Html. mailto ("mailto: weflytotti@163.com % 22, % 22 email me! ") %>

With subject and body
<% = Html. mailto ("mailto: weflytotti@163.com % 22, % 22 email me! "," Sending you a note"
, "Hey-wanted to say hi! ") %>

(15) radiobutton (optional) buttons

<% = Html. radiobutton ("name", "value") %>
Renderaction presents a controller Behavior Method
Renderpartial is a partial view that is optional by another view engine.
Renderusercontrol
Routelink generates a specific route connection
Submitbutton presents a field similar to a button to submit a form
Submitimage presents a similar image submission form field
Textarea presents a text field
Validationmessage displays a verification message for a specific viewdata
Validationsummary presents a verification Summary of viewdata.