private void GetPreviousGeneratedEventValues(string Id)
{
PreviousGeneratedEventValues.Clear();
if (GeneratedEventValues != null)
{
PreviousGeneratedEventValues.Add(string.Empty);
foreach (var gEventValue in GeneratedEventValues)
{
if ((string)gEventValue != EventValue) PreviousGeneratedEventValues.Add(gEventValue);
}
}
}