Why viewstate is not used in mvc

One of the major reasons for using webforms is the ease of being able to maintain viewstate. I would like to build an asp. Rather, the values of the controls are posted to a controller method. Once the controller method has been called, what you do with those values is up to you.

NET MVC will persist the values of the controls long enough for you to validate them and if needed to round-trip them back to your page for editing or correction. If the controls validate, you can persist them to a database or other data store, where they will be available for subsequent GET requests. I imagine the problem is you putting the bundle at a virtual URL that actually exists, but is a directory.

MVC is making a virtual file from your bundle and serving it up from the path you specify as the bundle path. The correct solution for that problem is to use a bundle path that does not directly map to an existing directory, and instead uses a virtual file name that also does not map to a real file name inside that directory. If you are rebinding the repeater, you need to do it on Init before the ViewState is loaded. You should also check the IsPostback flag and only Bind the repeater when the page is not posted back.

Autopostback is the mechanism by which the page will be posted back to the server automatically based on some events in the web controls. In some of the web controls, the property called auto post back, if set to true, will send the request to the server when an event happens in the control.

What is Enableviewstate in asp net? A server control's view state is the accumulation of all its property values. NET uses an instance of the StateBag class to store the property values. The values are then passed as a variable to a hidden field when subsequent requests are processed.

What is difference between ViewState and session in asp net? Storage The Viewstate is stored within the page itself in encrypted text , while the Sessionstate is stored in the server.

Session is used mainly for storing user specific data [ session specific data ]. Viewstate is the type of data that has scope only in the page in which it is used. What is ViewState parameter? This parameter is deserialised on the server-side to retrieve the data. It is normally possible to run code on a web server where a valid ViewState can be forged.

What is session in Web technology? In the computing world, a session refers to a limited time of communication between two systems. Some sessions involve a client and a server, while other sessions involve two personal computers. What is ViewState in Salesforce? What is viewState? ViewState holds state of the visualforce page that holds state that includes the fields, components and controller state.

Viewstate data in encrypted and cannot be viewed tools like firebug. Can we explain master page in asp net? Master pages allow you to create a consistent look and behavior for all the pages or group of pages in your web application. Is this what you are looking for? Or do you want to maintain the state of Models that are not being displayed in a form between requests? The key thing to remember is that your code executes on the server for the duration of the request and ends, the only information you can pass between your requests is basic html form data, url parameters and session information.

In the example below, the Model is filled by the controller with values received from the last post, so this enables a no js option in the page that can filter based on a status:. The above are all different independent options to achieve it that can be used in different scenarios. There are more options I didn't mention i. There is no 1 single mechanism to rule them all, and there shouldn't be. The best way to do this, i think, is to serialize your original model to a hidden field, then deserialize it and update the model on post.

This is somewhat similair to the viewstate approach, only you have to implement it yourself. I use this:. It contains the serialization information for the original object. When the form is posted, the hidden field is also posted ofcourse and the contents are deserialized by the custom modelbinder to the original object which is then updated and saved by the controller.

Do note that the object you are serializing needs to be decorated with the Serializable attribute or needs to have a TypeConverter that can convert the object to a string. It also offers encryptionn of the serialization data. AJAX calls is what we do. Think WebForms with the scenario of only binding a grid on the initial page load, i. Asked By: nickytonline. Answered By: eduncan Answered By: Lazarus.

Answered By: Andy Long. Answered By: eglasius.