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At run-time, the content file is parsed and transformed into a page class.
The code behind file contains the class definition.
The default event handler could be created in Visual Studio, just by double clicking the control in design view. A check box list presents a list of independent options.
The following table shows some of the default events for common controls: This example includes a simple page with a label control and a button control on it. These controls contain a collection of List Item objects that could be referred to through the Items property of the control.
The ASP tag for a button control: Some events cause the form to be posted back to the server immediately, these are called the postback events. For example, the change events or selection events such as Text Box. The default event for the Page object is Load event. For example, default event for the button control is the Click event. Common properties of List Item Collection: A radio button list presents a list of mutually exclusive options.If you want to validate your user's email you need to check for a few things.The @ symbol, at least one period, at least one character before the @ symbol, at least one after before the period, and at least one after the period.Only HTTP cannot keep track of all the information coming from various pages. NET session state and server side infrastructure keeps track of the information collected globally over a session. NET runtime carries the page state to and from the server across page requests while generating ASP. NET server controls with a visual aspect are derived from the Web Control class and inherit all the properties, events, and methods of this class. Basic syntax of check box: These control let a user choose from one or more items from the list.NET runtime codes, and incorporates the state of the server side components in hidden fields. The Web Control class itself and some other server controls that are not visually rendered are derived from the System. List boxes and drop-down lists contain one or more list items.