This is a good source of info Startv20/aspnet/doc/validation/second option is to find all textboxes and display the message Required field validators would work great.
However, if you prefer a j Query solution you could try something like this.
set validation group property for all validators, summary and button.
when you click the button , it will validate all validators from its validation group and display the message.
This validation uses the Querysave event of the form that contains the field.
With a little work you could easily turn this into a j Query helper method that you could reuse in all sorts of situations.
Add required field validators for every textbox and add a validation summary contol.
We assume that you have some experience developing applications using Domino Designer and Lotus Script.
In the first method, if the field contains any input (even only a single space character), then it can pass the validation.