Validating time in ajax
All this function does is provide some nice feedback to users who wish to use it. The following code example uses the derived class Text Box and validates an email address that the user enters. Length) ' Set the Error Provider error with the text to display. Set Error(text Box1, error Msg) End If End Sub Private Sub text Box1_Validated(By Val sender As Object, _ By Val e As System. Validated ' If all conditions have been met, clear the error provider of errors. Set Error(text Box1, "") End Sub When you change the focus by using the keyboard (TAB, SHIFT TAB, and so on), by calling the Select or Select Next Control methods, or by setting the Container Control.I only just found out that the j Query validation plugins has a validation rule called “remote” which can be used to make an ajax request instead of specifying a custom rule which has an ajax call it in.This will save you heaps of time with those custom validation rules. Example: Checking if a users email is already registered.Except this time, somebody else called John (what are the chances, eh?) has already signed up using that username, so after waiting a few seconds John sees an error message asking him to select another username.He types a new username and tries 'Submit' again, unsure as to whether his new selection will be suitable.So we fix this problem easily - we tell your users, while they're entering their username, whether their selection is available.
Read the setup guide if you want to know which configuration options that are available when setting up the validation.
By default the validation plugin will send off an ajax request for a remote rule every key you press causing too many ajax requests being sent to validate fields.
One way to disable this is to deactivate the onkeyup validation so that the remote rule is only validated via ajax once you have finished typing into the input.
To achieve this we're going to use j Query with it's fantastic Ajax support.
To get started, we create a simple view in Django that confirms the presence of a given username.