Use of MVC3----auxiliary methods 2

=============================== helper methods, models, view data

--------------------a simple helper method

Controller code:

Public ActionResult Edit (ID)

{

viewbag.price=10.0;

return View ();

}

View:

@Html. TextBox ("Price")

Render markup:

<input id= "Price" name= "Price" type= "text" value= "ten" >

--------------------View property values in an object

Controller code:

Public ActionResult Edit (int id)

{

Viewbag.price=new album{price=11};

return View ();

}

View:

@Html. TextBox ("Album.price")

Render markup:

<input id= "Album_price" name= "Album.price" type= "text" value= "one" >

--------------------strongly typed view data

Controller code:

Public ActionResult Edit (int id)

{

var album=new album{price=12.0m};

Return View (album);

}

View:

@Html. TextBox ("Price")

Render markup:

<input id= "Album_price" name= "Album.price" type= "text" value= "12.0" >

--------------------provide a displayed value to the form helper method

Controller code:

Public ActionResult Edit (int id)

{

var album=new album{price=12.0m};

Return View (album);

}

View:

@model MvcApplication3.Models.Album

@Html. TextBox ("Price", Model.st_name)

Render markup:

<input id= "Album_price" name= "Album.price" type= "text" value= "12.0" >

--------------------strongly typed view data (lambda instead of string)

Controller code:

Public ActionResult Edit (int id)

{

var album=new album{price=12.0m};

Return View (album);

}

View:

@model MvcApplication3.Models.Album

@Html. Textboxfor (M=>m.price)

Render markup:

<input id= "Album_price" name= "Album.price" type= "text" value= "12.0" >

--------------------helper methods and model metadata

View Code:

[DisplayName ("School type name")]

public virtual string St_name{get;set;}

View:

@Html. lable ("St_name")

Render markup:

<lable for= "St_name" > School type name </lable>

--------------------template-Assisted methods

(Editorfor is powerful than textboxfor, it can change the generated HTML via data annotations)

View Code:

[Stringlength (10)] //Enter up to 10 characters in length

[DataType (Datatype.multilinetext)]//Multiline text

public virtual string St_name{get;set;}

View:

@Html. editorfor (model = model.st_name)

@Html. validationmessagefor (model = model.st_name, "Maximum length of 10 characters")

Render markup:

<textarea name= "St_name" class= "Text-box multi-line" id= "St_name" data-val= "true" data-val-length-max= "10" Data-val-length= "Field st_name must be a string with a maximum length of 10. "></textarea>

This article is from the "program Ape's Home--hunter" blog, please be sure to keep this source http://962410314.blog.51cto.com/7563109/1597386

Use of MVC3----auxiliary methods 2