Razor  ASP.NET

What is Razor in ASP.NET? a. A web framework b. A programming language c. A view engine d. A database management system Answer: c. A view engine Which file extension is used for Razor views? a. .html b. .cshtml c. .aspx d. .vbhtml Answer: b. .cshtml What is the primary purpose of Razor in ASP.NET? a. To handle data access b. To manage authentication c. To create dynamic web pages d. To perform background processing Answer: c. To create dynamic web pages How do you include a C# code block in a Razor view? a. <%= %> b. @{} c. <?php ?> d. <% %> Answer: b. @{} Which symbol is used to output a variable’s value in a Razor view? a. # b. @ c. $ d. % Answer: b. @ In Razor, how do you create a comment? a. <!– comment –> b. // comment c. @* comment @ d. / comment */ Answer: c. @* comment *@ What is the syntax to include a partial view in Razor? a. @Html.Partial(“ViewName”) b. @RenderPartial(“ViewName”) c. @Include(“ViewName”) d. @Partial(“ViewName”) Answer: a. @Html.Partial(“ViewName”) How do you specify a layout page in Razor? a. @layout “LayoutPage” b. @Layout(“LayoutPage”) c. @Page(“LayoutPage”) d. @Render(“LayoutPage”) Answer: a. @layout “LayoutPage” What method is used to render a view from a controller in ASP.NET MVC? a. View() b. RenderView() c. PartialView() d. Display() Answer: a. View() Which directive is used to define the model type in a Razor view? a. @model b. @type c. @define d. @class Answer: a. @model How do you define a strongly-typed view in Razor? a. @model ModelType b. @view ModelType c. @type ModelType d. @class ModelType Answer: a. @model ModelType What is the purpose of the @if statement in Razor? a. To declare a variable b. To perform conditional rendering c. To call a method d. To define a new class Answer: b. To perform conditional rendering How do you iterate over a collection in Razor? a. @for loop b. @foreach loop c. @do loop d. @while loop Answer: b. @foreach loop How do you render a child action in Razor? a. @Html.Action(“ActionName”) b. @Html.RenderAction(“ActionName”) c. @Html.Include(“ActionName”) d. @RenderAction(“ActionName”) Answer: a. @Html.Action(“ActionName”) Which method in Razor allows you to output raw HTML? a. @Html.Raw() b. @Html.Encode() c. @Html.Output() d. @Html.Print() Answer: a. @Html.Raw() How do you handle form submissions in Razor? a. Using form action and method attributes b. Using AJAX calls c. Using JavaScript events d. Using HTML attributes only Answer: a. Using form action and method attributes What does the @model directive specify in Razor? a. The view’s base class b. The view’s layout c. The type of the model object d. The view’s controller Answer: c. The type of the model object How can you render HTML from a Razor view to ensure it is not HTML encoded? a. Use @Html.Unencoded() b. Use @Html.Raw() c. Use @Html.NoEncode() d. Use @Html.Escape() Answer: b. Use @Html.Raw() What is the default value of the Layout property in Razor views? a. null b. “MainLayout” c. “SiteLayout” d. “SharedLayout” Answer: a. null How do you access the ViewData dictionary in a Razor view? a. @ViewData[“key”] b. @Data[“key”] c. @View[“key”] d. @Context[“key”] Answer: a. @ViewData[“key”] What is the purpose of the @RenderBody() method in Razor? a. To render the content of the layout b. To render the child view c. To render the parent view d. To render static content Answer: a. To render the content of the layout How do you create a hyperlink in a Razor view? a. <a href=”URL”>Link Text</a> b. @Html.ActionLink(“Link Text”, “Action”, “Controller”) c. <link href=”URL”>Link Text</link> d. @Html.Link(“Link Text”, “URL”) Answer: b. @Html.ActionLink(“Link Text”, “Action”, “Controller”) How do you pass parameters to an action method from a Razor view? a. Using query strings b. Using form fields c. Using the Html.ActionLink method d. All of the above Answer: d. All of the above What is the purpose of the @section keyword in Razor? a. To define a new view section b. To render a section of HTML c. To define a layout page d. To create a new controller Answer: a. To define a new view section How do you include a C# variable in a Razor view? a. @variable b. <% variable %> c. $variable d. {{ variable }} Answer: a. @variable What does the @RenderSection method do in Razor? a. Renders a section defined in a layout b. Renders the entire layout c. Renders a partial view d. Renders a model Answer: a. Renders a section defined in a layout What is the purpose of the @Html.Partial method in Razor? a. To render a partial view b. To include a layout c. To render an HTML string d. To define a new section Answer: a. To render a partial view How do you include comments in Razor views that are not rendered in HTML? a. @* Comment @ b. <!– Comment –> c. / Comment */ d. // Comment Answer: a. @* Comment *@ How can you access a model property in Razor? a. @Model.PropertyName b. @Model[“PropertyName”] c. @Model.GetProperty(“PropertyName”) d. @Model.Property(“PropertyName”) Answer: a. @Model.PropertyName Which Razor method is used to render a view component? a. @Component.Invoke(“ComponentName”) b. @Html.RenderComponent(“ComponentName”) c. @Html.Invoke(“ComponentName”) d. @RenderComponent(“ComponentName”) Answer: a. @Component.Invoke(“ComponentName”) How do you handle form data in Razor views? a. By using form fields and HTTP methods b. By using JavaScript and AJAX c. By using query strings d. By using cookies Answer: a. By using form fields and HTTP methods How do you create a loop in Razor to iterate over a collection? a. @for loop b. @foreach loop c. @do loop d. @while loop Answer: b. @foreach loop Which Razor directive is used to include a layout page? a. @layout b. @Layout c. @Page d. @Include Answer: a. @layout How do you conditionally render HTML based on a model property in Razor? a. @if (Model.Property) { } b. @if (Model[“Property”]) { } c. @if (Property) { } d. @if (Model.GetProperty(“Property”)) { } Answer: a. @if (Model.Property) { } What is the purpose of the @Html.DisplayFor method in Razor? a. To render a model property value b. To display a form field c. To render a view component d. To display a section Answer: a. To render a model property value How do you create a form in Razor that posts data to a controller action? a. <form action=”Action” method=”post”>…</form> b. @using (Html.BeginForm(“Action”, “Controller”, FormMethod.Post)) { … } c. @Html.Form(“Action”, “Controller”) d. @Html.BeginForm(“Action”, “Controller”, FormMethod.Get) Answer: b. @using (Html.BeginForm(“Action”, “Controller”, FormMethod.Post)) { … } What is the purpose of the @Html.EditorFor method in Razor? a. To display an input field for a model property b. To render a text editor c. To include a partial view d. To display a form field Answer: a. To display an input field for a model property How do you set the value of a model property in Razor? a. @Model.PropertyName = value b. @Model.SetProperty(“PropertyName”, value) c. @Model[“PropertyName”] = value d. @Model.Update(“PropertyName”, value) Answer: a. @Model.PropertyName = value How do you handle errors in Razor views? a. Using @Try and @Catch b. Using @Html.ValidationSummary() c. Using @Html.Error() d. Using @Errors Answer: b. Using @Html.ValidationSummary() What method is used to include a JavaScript file in a Razor view? a. <script src=”URL”></script> b. @Scripts.Render(“URL”) c. @Html.Include(“URL”) d. @Script(“URL”) Answer: a. <script src=”URL”></script> How do you define a custom HTML helper in Razor? a. By creating a static method in a helper class b. By defining a method in a controller c. By adding a method to a Razor view d. By using the HtmlHelper class Answer: a. By creating a static method in a helper class What is the purpose of the @Html.TextBoxFor method in Razor? a. To render a text input field for a model property b. To create a textarea c. To render a label d. To create a password field Answer: a. To render a text input field for a model property How do you render a section of a layout in Razor? a. @RenderSection(“SectionName”, required: false) b. @Html.RenderSection(“SectionName”) c. @Section(“SectionName”) d. @Html.Section(“SectionName”) Answer: a. @RenderSection(“SectionName”, required: false) How do you create a dropdown list in Razor? a. @Html.DropDownList(“Name”, new SelectList(Model.Items, “Value”, “Text”)) b. <select name=”Name”>…</select> c. @Html.Select(“Name”, Model.Items) d. @Html.DropDown(“Name”, Model.Items) Answer: a. @Html.DropDownList(“Name”, new SelectList(Model.Items, “Value”, “Text”)) What is the syntax to render a component in Razor? a. @await Component.InvokeAsync(“ComponentName”) b. @Html.RenderComponent(“ComponentName”) c. @Component.Invoke(“ComponentName”) d. @Html.Component(“ComponentName”) Answer: a. @await Component.InvokeAsync(“ComponentName”) How do you render a view component asynchronously in Razor? a. @await Component.InvokeAsync(“ComponentName”) b. @Component.Invoke(“ComponentName”) c. @Html.RenderComponentAsync(“ComponentName”) d. @Html.Invoke(“ComponentName”) Answer: a. @await Component.InvokeAsync(“ComponentName”) What does the @Html.HiddenFor method do in Razor? a. Renders a hidden input field for a model property b. Renders a read-only field for a model property c. Renders a label d. Renders a password field Answer: a. Renders a hidden input field for a model property How do you include a CSS file in a Razor view? a. <link href=”URL” rel=”stylesheet” /> b. @Styles.Render(“URL”) c. @Html.Include(“URL”) d. <style src=”URL”></style> Answer: a. <link href=”URL” rel=”stylesheet” /> What is the purpose of the @Html.LabelFor method in Razor? a. To render a label for a model property b. To create a text input field c. To render a button d. To create a form field Answer: a. To render a label for a model property How do you handle validation messages in Razor views? a. @Html.ValidationMessageFor(model => model.Property) b. @Html.ErrorMessageFor(model => model.Property) c. @Html.AlertMessageFor(model => model.Property) d. @Html.Validation(model => model.Property) Answer: a. @Html.ValidationMessageFor(model => model.Property) How do you set a view’s title in Razor? a. @ViewBag.Title = “Title” b. @PageTitle = “Title” c. @Title = “Title” d. @ViewData[“Title”] = “Title” Answer: a. @ViewBag.Title = “Title” What is the syntax for creating a checkbox in Razor? a. @Html.CheckBox(“Name”, false) b. <input type=”checkbox” name=”Name” /> c. @Html.Check(“Name”, false) d. @Html.Input(“checkbox”, “Name”) Answer: a. @Html.CheckBox(“Name”, false) How do you access the current user’s identity in Razor? a. @User.Identity.Name b. @User.Identity c. @HttpContext.User.Identity.Name d. @HttpContext.User Answer: a. @User.Identity.Name What is the purpose of the @Html.Action method in Razor? a. To render a partial view b. To call an action method and render its result c. To render a model property d. To include a layout Answer: b. To call an action method and render its result How do you include a JavaScript file at the end of the page in a Razor view? a. <script src=”URL” defer></script> b. @Scripts.Render(“URL”) c. @Html.Include(“URL”) d. @Script(“URL”) Answer: a. <script src=”URL” defer></script> What method is used to render a section in a Razor view? a. @RenderSection(“SectionName”, required: false) b. @Section(“SectionName”) c. @Html.Section(“SectionName”) d. @Render(“SectionName”) Answer: a. @RenderSection(“SectionName”, required: false) How do you create a file upload form in Razor? a. @using (Html.BeginForm(“Action”, “Controller”, FormMethod.Post, new { enctype = “multipart/form-data” })) { … } b. <form action=”Action” method=”post” enctype=”multipart/form-data”>…</form> c. @Html.Upload(“Action”, “Controller”) d. @Html.FileUpload(“Action”, “Controller”) Answer: a. @using (Html.BeginForm(“Action”, “Controller”, FormMethod.Post, new { enctype = “multipart/form-data” })) { … } How do you create a dropdown list in Razor? a. @Html.DropDownList(“Name”, new SelectList(Model.Items, “Value”, “Text”)) b. <select name=”Name”>…</select> c. @Html.Select(“Name”, Model.Items) d. @Html.DropDown(“Name”, Model.Items) Answer: a. @Html.DropDownList(“Name”, new SelectList(Model.Items, “Value”, “Text”)) What is the purpose of the @Html.ActionLink method? a. To create a hyperlink to an action method b. To create a button c. To render a form d. To include a partial view Answer: a. To create a hyperlink to an action method How do you define a custom HTML helper method in Razor? a. By creating a static method in a helper class b. By defining a method in a controller c. By adding a method to a Razor view d. By using the HtmlHelper class Answer: a. By creating a static method in a helper class
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