TrackedChangeCollectionExtensions.cs

namespace TrackedChangeCollectionExtensions
{
    public static class TrackedChangeCollectionExtensions
    {
        // removes all changes in the TrackedChangeCollection with a given username
        public static int RemoveAll(
            this TXTextControl.TrackedChangeCollection trackdChangeCollection, 
            string username, bool accept)
        {
            List<TrackedChange> myTrackedChanges = new List<TrackedChange>();

            // loop through all changes
            foreach (TXTextControl.TrackedChange trackedChange in trackdChangeCollection)
            {
                if (trackedChange.UserName == username)
                    myTrackedChanges.Add(trackedChange);
            }

            // delete all changes
            foreach (TrackedChange listedTrackedChange in myTrackedChanges)
                trackdChangeCollection.Remove(listedTrackedChange, true);

            return myTrackedChanges.Count;
        }

        // removes all changes in all TextParts with a given username
        public static int RemoveAllTrackedChanges(
            this TXTextControl.TextPartCollection textPartCollection, 
            string username, bool accept)
        {
            // counter
            var deletedTrackedChanges = 0;

            // loop through all text parts
            foreach (IFormattedText textPart in textPartCollection)
            {
                List<TrackedChange> myTrackedChanges = new List<TrackedChange>();

                // loop through all changes
                foreach (TXTextControl.TrackedChange trackedChange in textPart.TrackedChanges)
                {
                    if (trackedChange.UserName == username)
                        myTrackedChanges.Add(trackedChange);
                }

                // delete all changes
                foreach (TrackedChange listedTrackedChange in myTrackedChanges)
                {
                    textPart.TrackedChanges.Remove(listedTrackedChange, true);
                    deletedTrackedChanges++;
                }
            }

            return deletedTrackedChanges;
        }
    }
}