Vb net 2010 time triggered event
If the event procedure defined for the event changes the text in the text box, it will trigger the event procedure. For example, the TextChanged event is triggered each time the text in a text box changes. Beware, however, of creating a recursive event. This will require VB.Net to invoke the form's Paint event.Īn event may also be triggered by the program itself.
VB NET 2010 TIME TRIGGERED EVENT WINDOWS
For example, if a form is partially obscured by another application's window, and the application is closed by the user, Windows will redraw the area of the form that was previously hidden. The operating system itself may initiate actions that trigger an event. The Tick event will be triggered at a time interval specified (in milliseconds) in its Interval property. A common example is the Tick event of a Timer control (a control, incidentally, that is not visible to the user at run time).
Sometimes objects trigger their own events.
VB NET 2010 TIME TRIGGERED EVENT CODE
A Button control, for example, has a number of events, including the Click event which is triggered when the user clicks on it, causing the code within the Click event to be executed.Ī Textbox control shares some events with the Button control (for example, the Click event) but has other events that the Button control does not, like the TextChanged event, which is triggered each time you enter or delete a character in a text box. Forms and their controls all have their own unique set of events that are specific to a particular type of object.
Traditional procedural programming languages create programs in which the execution path is almost entirely dictated by the program's code. Such actions, which are external to the program itself (although they may be triggered by the program) are called events. Programs need to do something in response to user actions and actions initiated by the operating system.