No nonsense MVC Introductory Tutorial notes

Self-study MVC, see the Garden Li Lin write Li Lin write nonsense mvc Introductory Tutorial notes, now some usually ignored or not very clear points down

1,html.dropdownlist

//service-side notation @{        //the value of the drop-down listlist<selectlistitem> SelectList =NewList<selectlistitem>(); Selectlist.add (NewSelectListItem {Value ="1", Text ="list Item One" }); Selectlist.add (NewSelectListItem {Value ="2", Text ="list Item Two" }); } @Html. DropDownList ("ddllist", (SelectList)NewSelectList (Selectlist.asenumerable (),"Value","Text")) //Client Generation<SelectId="ddllist"Name="ddllist"><option value="1"> list item One </option><option value="2"> list Item Two </option></Select>

2, master Page

A, the main content of the page is identified by @renderbody ()

B, @ViewBag. Title is a placeholder for a title that assigns a value to the variable in the control or page.

C, master page @rendersection ("Masterpart", false), @RenderSection method accepts two parameters: ("name", "Whether it is required"), if necessary, then the child page must implement the method, otherwise it will be an error. @section masterpart{Here is the second part of the master page}, @section + space + name {content} to replace the contents of the master page.

D,create as a patial view create custom content,@Html. Partial ("~/views/shared/_usercontrol.cshtml")

E, when layout is not specified on our page, the layout of the page will automatically inherit from _viewstart.cshtml if the item exists globally or in the same folder, if there is a different folder hierarchy _viewstart.cshtml Viewstart.cshtml, the closest one is inherited from the page. _viewstart.cshtml is a special file.

F, if you do not want the page to use any of the master and layout pages, you need to set layout = NULL

3,raddiobutton

Gender: Male @Html. radiobuttonfor (user = user. Sex, 0, new {@name = "sex", @checked = "true"})

 Female @Html. radiobuttonfor (user = user. Sex, 1, new {@name = "sex"})

4, data validation
A

        " Special Numbers " ]        [ Please enter {0}]]        [stringlength {0} between {2} bits to {1} bits " 1 )]        publicstringgetset; }

[Display (name = "Special number")]: View as shown in the name, depending on the effect of the operation.

[Required (errormessage = "Please enter {0}")]:inputnumber is required if the value of the ErrorMessage attribute is not filled in to be displayed on the page. {0} is a placeholder for the Name property in display.

[Stringlength (errormessage = "{0} is between {2} bits to {1} bits", Minimumlength = 1)]: string length: 1-20. {0}, {1}, and {2} are placeholders for parameters, respectively. {0} Name,{1}1{2}20

B,[regularexpression (@ "^[0-5]*$", errormessage = "only 0-5 digits")]: The first parameter is the positive expression to validate, and the second argument is an error message.

C, the inheritance method to achieve common data validation, with a class to inherit Regularexpressionattribute, so as to achieve the encapsulation of the positive expression and error message function, the class code is as follows:

usingSystem;usingSystem.ComponentModel.DataAnnotations;namespaceMVC3. demo.app_code{ Public classSpecialvalidation:regularexpressionattribute { PublicSpecialvalidation ():Base(@"^[0-5]*$") { }         Public Override stringFormaterrormessage (stringname) {            returnString.Format ("{0} is between 0-5", name); }    }}

Use the following code

using System.ComponentModel.DataAnnotations; using MVC3. Demo.app_code; namespace MVC3. demo.models{    Publicclass  validationmodel    {        [specialvalidation]          Public string Get Set ; }    }}

5, rich client with ExtJS and Juqeryui

No nonsense MVC Introductory Tutorial notes