It is automatically maintained across posts by the ASP. When a page is sent back to the client, the changes in the properties of the page and its controls are determined, and stored in the value of a hidden input field named _VIEWSTATE.

When the page is again posted back, the _VIEWSTATE field is sent to the server with the HTTP request.

You can use a asp regex validator to confirm input, just ensure you wrap your code behind method with a if(Is Valid) clause in case your javascript is bypassed.

If your client javascript is bypassed and script tags are posted to your form, will throw a unhandled exception.

For this demo application, I have taken a very simple example. 1) Fix for the code block For the css 'pre', add new property 'min-width: 730px;' and add width nn percentage.

I am assuming that I have to play with record of persons (First Name, Last Name, Age) and I will refer only these data through out this article. just to give you flexibility to not show scroll bar for long screens.

NET with C# 3-Tier architecture generally contains UI or Presentation Layer, Business Access Layer (BAL) or Business Logic Layer and Data Access Layer (DAL). Independence - layers are established so that if one is modified (to some extent) it will not affect other layers. Reusability - As the layers are seperated, it can exist as a module that can be reused by other application by referencing it.

Since the form is placed inside a model which is not visible after loading page, the plugin might ignore the fields.

NET web form will cause your site to throw and unhandled exception.

However, there needs to be some technique to store the information between requests and to retrieve it when required.

This information i.e., the current value of all the controls and variables for the current user in the current session is called the State. NET manages four types of states: The view state is the state of the page and all its controls.