Explain Tempdata In Asp.net Mvc?
TempData is again a key, value pair as ViewData. This is derived from "TempDataDictionary" class. TempData is used when the data is to be used in two consecutive requests, this could be between the actions or between the controllers. This requires typecasting in view.
What Are Html Helpers In Asp.net Mvc?
HTML Helpers are like controls in traditional web forms. But HTML helpers are more lightweight compared to web controls as it does not hold viewstate and events. HTML Helpers returns the HTML string which can be directly rendered to HTML page. Custom HTML Helpers also can be created by overriding "HtmlHelper" class.
How To Use Jquery Plugins In Asp.net Mvc Validation?
We can use dataannotations for validation in ASP.Net MVC. If we want to use validation during runtime using Jquery then we can use Jquery plugins for validation.
Eg
If validation is to be done on customer name textbox then we can do as
$('#CustomerName').rules("add", {
required: true,
minlength: 2,
messages: {
required: "Please enter name",
minlength: "Minimum length is 2"
}
});
How We Can Multiple Submit Buttons In Asp.net Mvc?
Below is the scenario and the solution to solve multiple submit buttons issue. Scenario
@using (Html.BeginForm("MyTestAction","MyTestController")
{
<input type="submit" value="MySave" />
<input type="submit" value="MyEdit" />
} Solution
Public ActionResult MyTestAction(string submit) //submit will have value either "MySave" or "MyEdit"
{
// Write code here
}
What Are The Differences Between Partial View And Display Template And Edit Templates In Asp.net Mvc?
Display Templates : These are model centric. Meaning it depends on the properties of the view model used. It uses convention that will only display like divs or labels.
Edit Templates : These are also model centric but will have editable controls like Textboxes.
Partial View : These are view centric. These will differ from templates by the way they render the properties (Id's) Eg : CategoryViewModel has Product class property then it will be rendered as Model.Product.ProductName but in case of templates if we CategoryViewModel has List then @Html.DisplayFor(m => m.Products) works and it renders the template for each item of this list.
Can I Set The Unlimited Length For "maxjsonlength" Property In Config?
No. We can't set unlimited length for property maxJsonLength. Default value is - 102400 and maximum value what we can set would be : 2147483644.
Can I Use Razor Code In Javascript In Asp.net Mvc?
Yes. We can use the razor code in javascript in cshtml by using <text> element.
< script type="text/javascript">
@foreach (var item in Model) {
< text >
//javascript goes here which uses the server values
< text >
}
< script>
How Can I Return String Result From Action In Asp.net Mvc?
Below is the code snippet to return string from action method
public ActionResult TestAction() {
return Content("Hello Test !!");
}
What Are Ajax Helpers In Asp.net Mvc?
AJAX Helpers are used to create AJAX enabled elements like as Ajax enabled forms and links which performs the request asynchronously and these are extension methods of AJAXHelper class which exists in namespace - System.Web.ASP.Net MVC.
Explain Sections Is Asp.net Mvc?
Section are the part of HTML which is to be rendered in layout page. In Layout page we will use the below syntax for rendering the HTML
@RenderSection("TestSection") And in child pages we are defining these sections as shown below
@section TestSection{
<h1>Test Content<h1>
} If any child page does not have this section defined then error will be thrown so to avoid that we can render the HTML like this
@RenderSection("TestSection", required: false)
How To Change The Action Name In Asp.net Mvc?
"ActionName" attribute can be used for changing the action name.
Below is the sample code snippet to demonstrate more
[ActionName("TestActionNew")]
public ActionResult TestAction()
{
return View();
}
So in the above code snippet "TestAction" is the original action name and in "ActionName" attribute, name - "TestActionNew" is given. So the caller of this action method will use the name "TestActionNew" to call this action.
What Are Code Blocks In Views?
Unlike code expressions that are evaluated and sent to the response, it is the blocks of code that are executed. This is useful for declaring variables which we may be required to be used later.
@{
int x = 123;
string y = "aa";
}
TempData is again a key, value pair as ViewData. This is derived from "TempDataDictionary" class. TempData is used when the data is to be used in two consecutive requests, this could be between the actions or between the controllers. This requires typecasting in view.
What Are Html Helpers In Asp.net Mvc?
HTML Helpers are like controls in traditional web forms. But HTML helpers are more lightweight compared to web controls as it does not hold viewstate and events. HTML Helpers returns the HTML string which can be directly rendered to HTML page. Custom HTML Helpers also can be created by overriding "HtmlHelper" class.
How To Use Jquery Plugins In Asp.net Mvc Validation?
We can use dataannotations for validation in ASP.Net MVC. If we want to use validation during runtime using Jquery then we can use Jquery plugins for validation.
Eg
If validation is to be done on customer name textbox then we can do as
$('#CustomerName').rules("add", {
required: true,
minlength: 2,
messages: {
required: "Please enter name",
minlength: "Minimum length is 2"
}
});
How We Can Multiple Submit Buttons In Asp.net Mvc?
Below is the scenario and the solution to solve multiple submit buttons issue. Scenario
@using (Html.BeginForm("MyTestAction","MyTestController")
{
<input type="submit" value="MySave" />
<input type="submit" value="MyEdit" />
} Solution
Public ActionResult MyTestAction(string submit) //submit will have value either "MySave" or "MyEdit"
{
// Write code here
}
 |
| Globant Most Frequently Asked ASP.NET MVC Interview Questions Answers |
What Are The Differences Between Partial View And Display Template And Edit Templates In Asp.net Mvc?
Display Templates : These are model centric. Meaning it depends on the properties of the view model used. It uses convention that will only display like divs or labels.
Edit Templates : These are also model centric but will have editable controls like Textboxes.
Partial View : These are view centric. These will differ from templates by the way they render the properties (Id's) Eg : CategoryViewModel has Product class property then it will be rendered as Model.Product.ProductName but in case of templates if we CategoryViewModel has List then @Html.DisplayFor(m => m.Products) works and it renders the template for each item of this list.
Can I Set The Unlimited Length For "maxjsonlength" Property In Config?
No. We can't set unlimited length for property maxJsonLength. Default value is - 102400 and maximum value what we can set would be : 2147483644.
Can I Use Razor Code In Javascript In Asp.net Mvc?
Yes. We can use the razor code in javascript in cshtml by using <text> element.
< script type="text/javascript">
@foreach (var item in Model) {
< text >
//javascript goes here which uses the server values
< text >
}
< script>
How Can I Return String Result From Action In Asp.net Mvc?
Below is the code snippet to return string from action method
public ActionResult TestAction() {
return Content("Hello Test !!");
}
What Are Ajax Helpers In Asp.net Mvc?
AJAX Helpers are used to create AJAX enabled elements like as Ajax enabled forms and links which performs the request asynchronously and these are extension methods of AJAXHelper class which exists in namespace - System.Web.ASP.Net MVC.
Explain Sections Is Asp.net Mvc?
Section are the part of HTML which is to be rendered in layout page. In Layout page we will use the below syntax for rendering the HTML
@RenderSection("TestSection") And in child pages we are defining these sections as shown below
@section TestSection{
<h1>Test Content<h1>
} If any child page does not have this section defined then error will be thrown so to avoid that we can render the HTML like this
@RenderSection("TestSection", required: false)
How To Change The Action Name In Asp.net Mvc?
"ActionName" attribute can be used for changing the action name.
Below is the sample code snippet to demonstrate more
[ActionName("TestActionNew")]
public ActionResult TestAction()
{
return View();
}
So in the above code snippet "TestAction" is the original action name and in "ActionName" attribute, name - "TestActionNew" is given. So the caller of this action method will use the name "TestActionNew" to call this action.
What Are Code Blocks In Views?
Unlike code expressions that are evaluated and sent to the response, it is the blocks of code that are executed. This is useful for declaring variables which we may be required to be used later.
@{
int x = 123;
string y = "aa";
}
https://mytecbooks.blogspot.com/2019/05/globant-aspnet-mvc-interview-questions.html