C windows form validating event

11-Dec-2019 18:32

This Property Grid control for Windows Forms allows the users easily to validate data before the data is committed.The data validation process will re quire the Validate Property event and the data editing mode will be enabled by disabling the read-only mode of the Property Grid items.Really confusing, you can still give and take focus to textbox in closing event to manually fire validate.Michael Weinhardt 16, 2004 Summary: Data validation is a key step in ensuring clean data capture and subsequent processing and reporting.Data input validation in Windows Forms is essential.Built-in validation doesn't go much further than an enforcable maximum length for textboxes, but there are some nice methods you can use to make validation a breeze.When a user is tabbing fast through a dialog entering data, they are sometimes going to get it wrong. When we do get it wrong, however, we don't want to be bugged about it.The last thing we need is for a Message Box to pop up when we tab away from a field, telling us it's invalid. Also, we don't want all the validation done when the user presses the OK button, because they could then potentially be given a great big message with all the fields that are wrong.

All the built in editors can be replaced by custom editors.

Why under this case does the Validating event not fire when a textbox has the focus but the form is closed. If the form is modal then none of the controls in it does not leave focus on form close.( Implemented text Box.

Leave event) So 'no leave' means still have focus for textbox and validating event does not fired.

After a few moments of friendly banter, Karen rather unusually asks Jerry for two forms of identification—a major credit card and valid driver's license.

Karen uses the identification to run a dating check on Jerry and it's this disturbing turn of events that forms the backbone of the comedy.

All the built in editors can be replaced by custom editors.Why under this case does the Validating event not fire when a textbox has the focus but the form is closed. If the form is modal then none of the controls in it does not leave focus on form close.( Implemented text Box.Leave event) So 'no leave' means still have focus for textbox and validating event does not fired.After a few moments of friendly banter, Karen rather unusually asks Jerry for two forms of identification—a major credit card and valid driver's license.Karen uses the identification to run a dating check on Jerry and it's this disturbing turn of events that forms the backbone of the comedy.in case extra validation like restricting validation to some of the controls only, that would be decided at the function calling level.