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In that case you should also somehow tell the user that there’s a problem with the field. For example, if the user presses Tab, clicks on another control, presses Enter to trigger the Accept button, or presses Esc to trigger the Cancel button.For example, you could display an error message, change the field’s background color, or at least beep to let the user know that focus did not leave the field because something is wrong. The event triggers even if the user tries to close the form.
in case extra validation like restricting validation to some of the controls only, that would be decided at the function calling level.
Active Control property to the current form, focus events occur in the following order Enter Got Focus Leave Validating Validated Lost Focus When you change the focus by using the mouse or by calling the Focus method, focus events occur in the following order: Enter Got Focus Lost Focus Leave Validating Validated event provides the hook to perform the validation and Error Provider gives a nice consistent approach to providing the user with feedback on any error conditions.
I want to make sure that the users enter integer numbers before I save it to the database.
I have already posted a thread regarding this enquiry under the title of "Raising events manually" but I think i caused some confusion in the process so now I will attack it from another direction.
I need to determine what the Validating event of a control is pointing to and therefore be able to call it manually.