c# use of tilde ~ in asp net path

Model binding helps to make data interaction more easy and sophisticated. It also does not need to deal with the data source object such as ObjectDataSource or SqlDataSource. It has the feature of authenticating users with some active directory or a specific domain name. We can also set a particular organization name as authentication. Radio Button can be created by dragging it from the toolbox of the visual studio. This element is mainly responsible for displaying the textual part of the web page.


The solution there was to manually validate the parameter that was read from the body – perhaps using a filter – and reject the request that way. It gets more interesting when you start thinking about non-nullable properties. Let’s add something like Quantity, of type integer to our model. Now, RequiredAttribute would never work correctly in such case, because the default value is __ and the property can never be null. Even if the client submits a request where the Quantity is completely missing, the model instance would have a value __.

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DataReader is faster than DataSet or DataTable classes commonly used with GridView. Repeated data is usually HTML code mixed with records from the data sources. Because of that, Repeater demands most work to define the template. In return, it gives us the most flexibility to build the layout and optimize the presentation. In November 2015, Microsoft released the 5.0 version of ASP.NET which get separated later and known as ASP.NET Core.

REST stands for REpresentational State Transfer.REST is an architectural style that doesn’t follow any strict standard but follows six constraints defined by Roy Fielding in 2000. Moreover, REST can use SOAP protocol but SOAP cannot use REST.REST is easy to implement and requires less bandwidth such as smartphones. The RedirectPermanent(String) method overload gives a 301 HTTP status code in the reaction and incorporates the URL to divert the request.

More in ‘Web Applications’

One of the biggest advantages of ASP.NET is its flexibility and object-oriented features. The ASP.NET applications are built on top of the CLR and can be written in any of the .NET compliant languages. In simple terms, ASP.NET is a software framework that allows you to use the. NET platform and its supporting languages to develop web applications.


It likewise follows a code-behind design, for example, the ASP.NET pages, despite the fact that it doesn’t have a user interface. ASP.NET Core is a cross-platform, open-source, and high-performance web application framework that allows to build modern, cloud-enabled applications. But ASP.NET is only used to create web applications and web services. That’s why we termed ASP.NET as a subset of the .NET Framework. Although each framework is independent to other, we can combine and use any of that at any level of our application.

Table of Contents

Both ASP.NET and ASP.NET Core are web development frameworks built on C#, a widely used object-oriented, general-purpose programming language. While ASP.NET Core does inherit certain concepts and features from its ASP.NET predecessor, it represents a significant evolution and a fundamentally new framework. The ASP.NET Core hosting model does not directly listen for requests; rather it relies on an HTTP server implementation to forward the request to the application. The forwarded request is wrapped as a set of feature interfaces that the application then composes into an HttpContext. ASP.NET Core includes a managed cross-platform web server, called Kestrel, that you would typically run behind a production web server like IIS or nginx.


The exception is CSS paths which are relative to the page source page or code calling them internally. Many say that means those absolute web paths break if you move them. But I argue, why would you need to reference the root for your website then suddenly change that? If you do, that should be managed on the server side and injected into your HTML and JavaScript, not the other way around. The tilde refers to the application root directory, and will be translated correctly in control properties such as NavigateUrl.

Features of Web Forms

The LoginStatus control is a very simple control, all it does is display a link that is different depending on whether the user is logged in or logged out. If a user is logged in then it displays a LogOut link and vice versa. asp.net Core uses a new configuration model for handling simple name-value pairs.

  • Need to write code for implementing Update and Delete operations.
  • At Wakefly, Matt upholds a process-driven standard of excellence to deliver exceptional quality and value.
  • DataReader is faster than DataSet or DataTable classes commonly used with GridView.
  • Environments, like “Development” and “Production”, are a first-class notion in ASP.NET Core and can be set using environment variables.
  • Because of that, Repeater demands most work to define the template.

For example, to develop client interaction module, we can use MVC and for data control, we can use Web Forms. These are also based on the .NET Framework and share core functionalities of .NET and ASP.NET. This type of authentication is most common and popular for web applications. One thing to watch out for is that this behavior (BindRequiredAttribute) only applies to situations when MVC performs model binding – form requests, querystring binding etc. So it would not work (would have no effect) for requests that go through input formatters, such as, primarily, JSON requests. In those cases the workaround is to use attribute that is specific to a given formatter.

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Since then millions of developers have used it to build and run great web apps, and over the years we have added and evolved many capabilities to it. The selection of style is depends on the skills and experience of the programmer. Simplilearn also offers free online skill-up courses in several domains, from data science and business analytics to software development, AI, and machine learning. You can take up any of these free courses to upgrade your skills and advance your career.

With that in place, you can now validate the ModelState for errors, as failed validation against the attributes would be reflected there. The attribute can still be used in ASP.NET Core MVC, but there is also a new one – BindRequiredAttribute. The .NET Framework 2.0 Service Pack 1 was released on 19 November 2007.[45] It requires Windows 2000 with SP4. Suppose, when a user signs in to a password-restricted system, a cookie stores user information (user name, password). So the client doesn’t need to re-type their details information for each new page they wish to download. The cookie property gets a collection of the client’s cookie variables.


ASP.NET is built into the familiar Windows server environment, requiring less setup and configuration than other web development platforms that must be installed and configured separately. The popularity of ASP.NET makes online resources and skilled developers easy to find. Global.asax is an optional file that resides in the application root directory. This file is used to handle higher-level application events, for example, Application_Start, Application_End, Session_Start, Session_End, and so on. It is additionally known as the ASP.NET Application File..Global.asax contains a Class representing your application as a whole.

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