VaryByParam = “name”: This property enables you to create different cached versions of the content when a form parameter or query string parameter varies. … Let’s use [OutputCache(Duration = 10, VaryByParam = “name”)] in code above and look at behavior.

What is VaryByParam?

The VaryByParam is a semicolon-delimited set of parameters used to vary the cached output. It allows varying the cached output by GET query string or form POST parameters.

What is the use of OutputCache attribute in MVC?

The OutputCache Attribute in ASP.NET MVC Application is used to cache the content returned by a controller action method for a specific time period, so that, if the subsequent request comes within that time period, then the content is going to be returned from the cache memory.

What is OutputCache?

The output cache enables you to cache the content returned by a controller action. That way, the same content does not need to be generated each and every time the same controller action is invoked. Imagine, for example, that your ASP.NET MVC application displays a list of database records in a view named Index.

What is OutputCache MVC?

The output cache enables you to cache the content returned by a controller action. … Output caching basically allows you to store the output of a particular controller in the memory. Hence, any future request coming for the same action in that controller will be returned from the cached result.

Where is OutputCache stored?

The output cache is located on the Web server where the request was processed. This value corresponds to the Server enumeration value. The output cache can be stored only at the origin server or at the requesting client.

What is the use of query by Param attribute in output cache directive?

The VaryByParam attribute determines which versions of the page output are actually cached. c. The VaryByParam attribute determines which web page is cached in database.

How do I clear my output cache?

1. // Get the url for the action method:
2. var staleItem = Url. Action(“Action”, “YourController”, new.
3. {
4. Id = model.Id,
5. area = “areaname”;
6. });
7. // Remove the item from cache.
8. Response. RemoveOutputCacheItem(staleItem);

How do I cache data in C#?

1. Add(CacheItem Item,CacheItemPolicy policy)
2. Add(string key,object value,CacheItemPolicy policy, string retionname)
3. Add(string key,object value,DateTimeOffset absoluteExpiration, string retionname)

How can we do validations in MVC?

1. Required.
2. Range,
3. RegularExpression ,
4. Compare.
5. StringLength.
6. Data type.

Article first time published on

What is partial view in MVC C#?

Partial view in ASP.NET MVC is special view which renders a portion of view content. It is just like a user control of a web form application. Partial can be reusable in multiple views. It helps us to reduce code duplication. In other word a partial view enables us to render a view within the parent view.

What is the purpose of ViewBag property?

What is ViewBag? The Microsoft Developer Network writes that the ViewBag property allows you to share values dynamically to the view from the controller. As such, it is considered a dynamic object without pre-set properties.

How caching is implemented in MVC?

In ASP.NET MVC, OutputCache attribute is used for applying Caching. OutputCheching will store the output of a Controller in memory and if any other request comes for the same, it will return it from cache result. OutputCache attribute can have a parameter. It describes the time in seconds.

What is the difference between session cookies and cache?

The main difference between Cache and Cookie is that, Cache is used to store online page resources during a browser for the long run purpose or to decrease the loading time. On the other hand, cookies are employed to store user choices such as browsing session to trace the user preferences.

What is exception filter in MVC?

Exception filter in MVC provides an ability to handle the exceptions for all the controller methods at a single location. This is by creating a class, which inherits from the FilterAttribute and IExceptionFilter interface. … OnException is executed whenever any exception occurs in the controller action method.

What are the 2 required attributes of the @OutputCache directive?

Here, in that statement Duration and VarByParam are the two attributes of the OutputCache directive.

What are the different types of caching in asp net?

• page output caching.
• page fragment caching.
• data caching.

What is caching of data?

Caching is a technique of storing frequently used data/information in memory, so that, when the same data/information is needed next time, it could be directly retrieved from the memory instead of being generated by the application.

What does the location property of the ResponseCache attribute control?

Once middleware is set up, [ResponseCache] attribute is applied to the controller/action to enable caching. The attribute has some useful parameters to alter the behaviour of the middleware. Duration: used to set cache expiry (in seconds). Location: translates into Cache-Control header of public, private or no-cache.

What is new in asp net mvc5?

ASP.NET MVC 5 has introduced a more robust, secure, and at the same time, a flexible identity management mechanism. Now with MVC 5, developers need not explicitly manage identity and authentication of the application users.

What is client side state management in asp net?

Client Side State Management. It is a way in which the information which is being added by the user or the information about the interaction happened between the user and the server is stored on the client’s machine or in the page itself.

What is Redis cache C#?

Redis Cache is an open source, in-memory database that is used for improving the performance of an application by retrieving and storing the data in the cache memory using a Key-value format. Azure Redis Cache is a feature-rich functionality that gives you access to secure, low-latency, high-performance throughput.

Where is MemoryCache stored?

The cache memory is located very close to the CPU, either on the CPU chip itself or on the motherboard in the immediate vicinity of the CPU and connected by a dedicated data bus. So instructions and data can be read from it (and written to it) much more quickly than is the case with normal RAM.

What is CLS C#?

CLS stands for Common Language Specification and it is a subset of CTS. It defines a set of rules and restrictions that every language must follow which runs under the . NET framework. … In simple words, CLS enables cross-language integration or Interoperability.

What are razor views?

Razor View Engine is a markup syntax which helps us to write HTML and server-side code in web pages using C# or VB.Net. … Razor is a templating engine and ASP.NET MVC has implemented a view engine which allows us to use Razor inside of an MVC application to produce HTML.

What do you mean by ActionResult ()?

What is an ActionResult? An ActionResult is a return type of a controller method, also called an action method, and serves as the base class for *Result classes. Action methods return models to views, file streams, redirect to other controllers, or whatever is necessary for the task at hand.

How do you add validations?

1. Select one or more cells to validate.
2. On the Data tab, in the Data Tools group, click Data Validation.
3. On the Settings tab, in the Allow box, select List.
4. In the Source box, type your list values, separated by commas. …
5. Make sure that the In-cell dropdown check box is selected.

What is difference between view and partial view?

View can basically contains a complete markup which may contain a master view(or master page) with all the design(s) etc. whereas Partial view is only a portion of page or a small markup which don’t have master page. It is basically used as user control in mvc and it can be used at more than one views.

What is difference between partial and render partial view?

The primary difference between the two methods is that Partial generates the HTML from the View and returns it to the View to be incorporated into the page. RenderPartial, on the other hand, doesn’t return anything and, instead, adds its HTML directly to the Response object’s output.

How do you use partial views?

To create a partial view, right click on the Shared folder -> click Add -> click View.. to open the Add View popup, as shown below. You can create a partial view in any View folder. However, it is recommended to create all your partial views in the Shared folder so that they can be used in multiple views.

Where is ViewBag stored?

ViewBag lives within the current context. IN ASP.NET the context is all the objects required to fulfill an HTTP request. Session is a state management framework in ASP.NET. Session is stored in the server in memory for a variable duration.