Thanks Hristo

I ran your code though a code converter (as our UI is VB) but it didn't work, probably the fault of the code converter.  For anyone else reading this thread this was the VB code I used in the end which seems to work well:

    Public Shared Function FindTaskByID(tasks As TasksCollection, id As Guid) As Infragistics.Win.UltraWinSchedule.Task

        If tasks Is Nothing Then Return Nothing

        For Each task In tasks

            'Is this the matching task?

            If task.Id = id Then Return task

            'Recurse the child tasks

            Dim match = FindTaskByID(task.Tasks, id)

            If match IsNot Nothing Then Return match

        Next

        Return Nothing

    End Function

Hello,

If the task that you are trying to find is a child task then you should search into the task tree with some algorithm for searching into tree. Here is one simple implementation of such algorithm applied to your particular scenario:

private Infragistics.Win.UltraWinSchedule.Task FindTaskByID(TasksCollection tasks, Guid id)

        {

            if (tasks == null)

                return null;

            Infragistics.Win.UltraWinSchedule.Task searchedTask = tasks.FirstOrDefault<Infragistics.Win.UltraWinSchedule.Task>(t => t.Id.Equals(id)) as Infragistics.Win.UltraWinSchedule.Task;

            if (searchedTask == null)

            {

                int count = 0;

                while (count < tasks.Count && searchedTask == null)

                {

                    searchedTask = FindTaskByID(tasks[count].Tasks, id);

                    count++;

                }

                return searchedTask;

            }

            else

                return searchedTask;

        }

Please let me know if you have any further questions

Hi

Sorry, forgot to say I'd tried that - the problem with that collection is that it only contains the top level nodes, so if the task I'm trying to find is a child of one of those tasks the linq statement will return no records.  Is there a property that returns the flattened out collection of all tasks and child tasks or do I need to write some soft of recursive routine to walk the tree?

Thanks, Tom