c# - What are the common practices for notifying a user of invalid input? -

In my company, I have seen several ways to inform the user when their input is invalid (our validity is usually Occurs when user clicks on some form of "Send" button)

This is the most common approach I've seen:

• To control Using Classes which contain illegal input under control ( This is my current priority because the The installation can be done in one shot and the user can easily recognize which control has invalid input. )

• Confirm the input in all the controls And compile the list of messages to display the user. Once the validity is completed according to the rule, the user can display the "invalid input" message at a time (via the message box).

• In order to verify the input sequentially in each control and inform the user once a piece of invalid data is found (through a message box) ( I Not a fan because if both Control_A and Control_B contain invalid data, then the user must try to submit data twice to see both the verification message. )

Using the text "itemprop =" text ">

, you can add two earlier methods, because both of them provide an error for different controls But also the total error message for the entire view.

In some cases, you have a valid input logic that depends on combination of many input inputs , So only the binding validation for each control is very prohibited On the other hand, you still want to be able to provide an error message for each control in many cases where it makes sense. IDataError allows you to do both. The most common UI implementation is that each invalid control has a visual key (like a blinking icon).

When a user makes something invalid, then a model dialogue boxing (message box) is picking up the effective way to annoy the user - they lose reference and 'OK' The button has to be clicked.