The controls on a form control act as a filed setter. for example if you create a form with 3 of the out of the box text inputs it will create 3 fields (columns) in the table for this form which will store the input. When building a custom widget for the forms module and you want it to to store the values of each textbox in the same field you will have to combine the input in the bellow JS methods:
// Gets the value of the field control.
//here get the input from all textboxes and format the input string
// Sets the value of the text field control depending on DisplayMode.
//parse the value so that you can populate each textbox
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items