Gridview： How to change the image of an image control place in each row in a gridview：（）

单项选择题YouaredevelopinganASP.NETWebpage.Youaddadata-boundGridViewcontrol.TheGridViewcontainsaTemplateFieldthatincludesaDropDownList.YousettheGridViewsClientIDModepropertytoStatic，andyousettheClientIDRowSuffixpropertytoProductID.YouneedtobeabletoreferenceindividualDropDownListcontrolsfromclient-sidescriptbyusingtheProductID.WhatshouldyousettheClientIDModepropertyoftheDropDownListto？（）

A.AutoID
B.Static
C.Inherit
D.Predictable

单项选择题YouaredevelopinganASP.NETWebpagethatwilldisplaythemedianvaluefromasequenceofintegervalues.Youneedtocreateanextensionmethodtocomputethemedianvalue.Whichinterfaceshouldyouaddtheextensionmethodto？（）

A. IComparer<T>
B. IEnumerable<T>
C. IEnumerator<T>  
D. IEqualityComparer<T>

单项选择题YouaredevelopinganASP.NETMVC2application.Aviewcontainsaformthatallowsuserstosubmittheirfirstname.Youneedtodisplaythevaluethatissubmitted，andyoumustensurethatyourcodeavoidscross-sitescripting.Whichcodesegmentshouldyouuse？（）

A.<%: Model.FirstName %>
B.<%= Model.FirstName %> 
C.<% Response.Write(Model.FirstName) %>  
D.<% Response.Write(HttpUtility.HtmlDecode(Model.FirstName)) %> 

单项选择题YouaredevelopinganASP.NETMVC2Webapplication.TheapplicationcontainsacontrollernamedHomeController，whichhasanactionnamedIndex.TheapplicationalsocontainsaseparateareanamedBlog.AviewwithintheBlogareamustcontainanActionLinkthatwilllinktotheIndexactionoftheHomeController.YouneedtoensurethattheActionLinkintheBlogarealinkstotheIndexactionoftheHomeController.WhichActionLinkshouldyouuse？（）

A.Html.ActionLink（"Home"， "Index"， "Home"）
B.Html.ActionLink（"Home"， "Index"， "Home"， new {area = ""}， null）
C.Html.ActionLink（"Home"， "Index"， "Home"， new {area = "Blog"}， null）
D.Html.ActionLink（"Home"， "Index"， "Home"， new {area = "Home"}， null）

多项选择题You are developing an ASP.NET Web page. You add the following markup to the page. You add the following code segment to the code-behind. You need to save the uploaded file and display a message to the user that indicates that the upload either succeeded or failed. Which two actions should you perform？（）

A.Replace line 3 with the following code segment. if （FileUpload1.HasFile）
B.Replace line 3 with the following code segment. if （FileUpload1.FileContent.Length > 0）
C.Insert the following code segment at line 6.  FileUpload1.SaveAs（saveName）；
D.Insert the following code segment at line 6. FileUpload1.FileContent.CopyTo（new FileStream（saveName， FileMode.Open）；