Implementing Annotations in an Image Data Provider

Annotations on a document could potentially be modified and sent to the server by multiple users at any given time. When saving annotations, ImageGear will first call the provider to read the current annotations, merge in the changes, and then call the provider to save the annotations. To protect the integrity of annotation data during this operation, ImageGear uses a .NET framework object, System.Transactions.TransactionScope.

This section provides information about the following:

Implementing Annotations in an Image Data Provider

Annotation Using Built-In Providers
Enabling Annotation within a Custom Image Data Provider

Background Information on Transactions

Using a Transactional Resource
Using a Non-Transactional Resource

Helper Abstract Classes in ImageGear22.Web.Services Assembly