单项选择题

You are developing an ASP.NET Web page that contains input controls， validation controls， and a button named btnSubmit. The page has the following code-behind.01 Public Class _Default 02 Inherits System.Web.UI.Page03 04 Protected Sub SaveToDatabase（）05 06 End Sub07 08 Protected Sub btnSubmit_Click（ByVal sender As Object，09 ByVal e As EventArgs） Handles btnSubmit.Click10 11 End Sub12 13 End Class You need to ensure that all data that is submitted passes validation before the data is saved in a database. What should you do？（）

A.Add the following method override. Protected Overrides Sub OnInit（ByVal e As EventArgs） MyBase.OnInit（e） If （Page.IsValid） Then Me.SaveToDatabase（） End Sub
B.Add the following method override. Protected Overrides Sub OnLoad（ByVal e As EventArgs） MyBase.OnLoad（e） If （Page.IsValid） Then Me.SaveToDatabase（） End Sub
C.Add the following method override.Protected Overrides Sub OnPreRender（ByVal e As EventArgs） MyBase.OnPreRender（e） If （Page.IsValid） Then Me.SaveToDatabase（） End Sub
D.Add the following code segment at line 10. If （Page.IsValid） Then Me.SaveToDatabase（）

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单项选择题

YoucreateanewASP.NETMVC2Webapplication.ThefollowingdefaultroutesarecreatedintheGlobal.asax.vbfile.01SharedSubRegisterRoutes（ByValroutesAsRouteCollection）0203routes.IgnoreRoute（ {resource}.axd {*pathInfo} ）0405routes.MapRoute（ Default ， {controller} {action} {id} ，NewWith{.controller= Home ，.action= Index ，.id= }）06EndSubYouimplementacontrollernamedHomeControllerthatincludesmethodswiththefollowingsignatures.FunctionIndex（）AsActionResultFunctionDetails（ByValidAsInteger）AsActionResultFunctionDetailsByUsername（ByValusernameAsString）AsActionResultYouneedtoaddaroutetomeetthefollowingrequirements.ThedetailsforausermustbedisplayedwhenausernameisenteredasthepathbyinvokingtheDetailsByUsernameaction.Usernamescancontainalphanumericcharactersandunderscores，andcanbebetween3and20characterslong.Whatshouldyoudo？（）

A.Replace line 05 with the following code segment. routes.MapRoute（ "Default"， "{controller}/{action}/{id}"， New With {.controller = "Home"， .action = "DetailsByUsername"， .id = ""}）
B.Replace line 05 with the following code segment. routes.MapRoute（"Default"， "{controller}/{action}/{username}"， New With {.controller = "Home"， .action = "DetailsByUsername"， .username = ""}， New With {.username = "\w{3，20}"} ）
C.At line 04， add the following code segment.routes.MapRoute（ "Details byUsername""{username}"， New With {.controller = "Home"， .action = "DetailsByUsername"}， New With {.username = "\w{3，20}"}）
D.At line 04， add the following code segment. routes.MapRoute（ "Details by Username"， "{id}"， New With {.controller = "Home"， .action = "DetailsByUsername"}， New With {.id = "\w{3，20}"} ）

单项选择题

YouareimplementinganASP.NETMVC2application.IntheAreasfolder，youaddasubfoldernamedProducttocreateasingleprojectareA.YouaddfilesnamedProductController.vbandIndex.aspxtotheappropriatesubfolders.YouthenaddafilenamedRoute.vbtotheProductfolderthatcontainsthefollowingcode.01PublicClassRouteInheritsAreaRegistration0203PublicOverridesReadOnlyPropertyAreaNameAsString04Get05Return product 06EndGet07EndProperty0809PublicOverridesSubRegisterArea（ByValcontextAsAreaRegistrationContext）1011context.MapRoute（ product_default ， product {controller} {action} {id} ，NewWith{.controller= Product ，.action= Index ，.id= }）1213EndSubEndClassWhenyouloadtheURLhttp： product，youdiscoverthatthecorrectpageisnotreturned.Youneedtoensurethatthecorrectpageisreturned.Whatshouldyoudo？（）

A.Replace line 11 with the following code segment. context.MapRoute（"product_default"， "{area}/{controller}/{action}/{id}"， New With {.area = "product"， .controller = "Product"， .action = "Index"， .id = ""}）
B.Replace line 11 with the following code segment. context.MapRoute（"product_default"， "{area}"， New With {.controller = "Product"， .action = "Index"， .id = ""}）
C.Add the following code segment at line 12. AreaRegistration.RegisterAllAreas（）
D.Add the following code segment to the RegisterRoutes method in the Global.asax.vb file. AreaRegistration.RegisterAllAreas（）