Parsing and rendering of ASP. NET MVC Metadata

The model metadata is a description of the data type itself and its property members, and the metadata has recursion (if the data is a complex type , the properties of the corresponding metadata describe the attributes of its properties).
Purpose: Model of HTML rendering, model binding, model validation.

Modelmetadata Custom

HTML is rendered based on the properties of the Modelmetadata data, and the Modelmetadata object is created to modify Modelmetadata object properties based on the value of the reflected Read property.

Custom Features	Properties	function
Uihintattribute	Templatehint	Template Name
Hiddeninputattribute	Hidesurroundinghtml	Whether to show title
Scaffoldcolumnattribute	Showfordisplay Showforedit	is displayed in the HTML
Datatypeattribute Displayformatattribute	DataType DisplayFormat	Data display style

Imetadataaware interface that implements an interface that modifies the properties of Modelmetadata when creating Modelmetadata. You can customize the metadata by implementing an interface.

Data templates

Depending on the metadata selection template, the default path for the template is: ~/views/shared or ~/views/{controllername}. Pre-defined templates exist for the system

Book in template	HTML
EmailAddress	Hyper Link to mailto

Users can customize the template by creating a template in the default path.

Custom HtmlHelper

By extending HtmlHelper the type, you can customize the label to generate HTML.

public static string TestHtml(this HtmlHelper htmlHelper, string value){    return String.Format("<div>{0}</div>", value);}

The availability of model metadata

What is the source of modelmetadata data? By implementing Modelmetadataprovider abstract classes.

Users can customize ModelMetadataProviders.Current the registration metadata provided Provider .

Parsing and rendering of ASP. NET MVC Metadata