How to create file upload custom component?

[surindersingh]

I have created some other custom components like checkBox and Radio button. which are working file.


Now i want to create file upload component which i want to use in custom activiti bpmn forms.
How can i create? please help me to create  this component.


I would appreciate your help. Thank You.

[jbarrez]

You will need to look into the Vaadin upload widget, and store the result in a ByteArray variable type.