/// <summary>
/// Indicate failure for the current split.
///
/// There must be at least one split defined before this method can be called. If
/// this is not the case, ArgumentOutOfRangeException will be thrown.
/// </summary>
public void FailureProc()
{
// A run must be in progress.
if (RunInProgress == false)
{
throw new InvalidOperationException();
}
// Inform the Model.
Challenges.Failure(currentChallenge);
// Increment the current value of the current split.
splitList[CurrentSplit].CurrentValue++;
// Increment the current value of the TOTAL row.
splitList.Last().CurrentValue++;
NotifyPropertyChanged("SplitList");
}