I am using jeasyui editable combobox. How to restrict the user to type only valid values.
for example, if my list is containing,
C
Cplus
Java
if the user type vb and tries to save, its saving with value "0".
You can set the combobox as a validatebox. And define your rule to validate.
for more info, please hit easyui validate box
Related
I am trying to figure out how to add placeholder string value on every property inside a property grid that was not changed from the user.
So let's say you are trying to edit some object when you get prompted to do so you will get the following form.
If you changed the color property for example the result would be the following.
I tried to see if there is an attribute but it seems that there is not. DefaultValue is not suitable because the message is a string and the underlying property could be anything.
The question is if this is possible using combinations of Editors and TypeConverters.
Thanks.
I got a ComboBox in Vaadin and want to reload (from db) the set of entries in the dropdown list while typing in the text field of the ComboBox. I always got the exception:
java.lang.IllegalStateException: A connector should not be marked as dirty while a response is being written.
I tried to lock the session (getUI().getSession().getLockInstance().lock();), but it didn't help.
Is it possible to dynamically set/load the selection list of a ComboBox?
Cheers
Stefan
why do you want to change the content from DB as the user type? you'll get a postback and a query every key the user presses... isn't better to use the standard combo feature (which tries to autocomplete the value given what the user is typing)?
Anyway, if you really need this feature, you may extend the standard behaviour of combo extending the container behind the combo, as the data shown is taken from a container.
If I setup a lookup for a field when designing a table (i.e. through the Lookup Wizard) and I set "Allow Multiple Values" to "Yes", a multi-select combobox (i.e. with check-boxes) is displayed in the relevant field in the "Datasheet" view of the table. My question is the following: Is the text-box component of a multi-select combobox control actually of any use? While a single-select combobox lets you type a new value that is not in the list or facilitates the auto-complete feature when typing a value that is included in the list, but the multi-select combo box prevents you from typing anything in its textbox, and that behavior doesn't seem to change via the properties of the combobox control.
The reason I need this feature is because I want to type there something not in the list, in order to trigger the control's NotInList event, so that I can update the corresponding lookup table with the new value I typed.
Thanks
I have a combobox with force selection true. when user types an arbitrary value it clears the value when validating. I need to know how to keep the invalid value that user entered while displaying its invalid. Like alternative forceSelection.
Thanks. Hopes an immediate help.
Found a result for this and it works perfectly.
ExtJS findExact() and custom validator bug
In WPF using IDataErrorInfo and Style I want to create form where I can provide end user three different status while validating data
To make the scenario more clear
1) I have textbox next to it I have icon which provides end user what kind of input textbox expects - Initial status with information icon
2) As soon as user enter data it validates it and decides whether it is valid or not
- most of the time it will show cross (X) icon saying invalid data
3) As it is validating on UpdateSourceTrigger="PropertyChanged" it will turn cross icon to green check mark as soon as it gets validated
i.e
[ ] i (tooltip- Any valid user name )
[Ga ] X (tooltip- Invalid user name. Must be 5 char long)
[Gaurav ] * (it will show only correct icon, meaning valid value)
How can I achieve this using IDataErrorInfo and Style, I tried doing that but as soon as my form gets loaded it invalidates all the data and shows cross icon at the first time. I want to show different tooltip and different icon for three states (Initial info, Invalid data, Valid data)
IDataErrorInfo does not contain any means of representing three states. It only knows "error" and "no error".
The best solution may be to circumvent the use of IDataErrorInfo via the following:
Create a property for each validated field that provides the three-state status for its related field.
Bind ContentControls in the view to these three-state properties.
Set a single style for all of these new ContentControls.
Use Triggers in the Style to assign the ContentControl.ContentTemplate property for the error state and the valid state. For the initial state, use a Setter in the Style itself to display nothing.
You may also have to create properties for each field's tooltip text as well.
you can find a great example here WPF Apps With The Model-View-ViewModel Design Pattern