/// <summary>
/// Updates the progress bar based on the position in the task sequence.
/// </summary>
private void ProgressBarRefresh()
{
// Get position in task sequence if there is one
int currentInstruction;
int lastInstruction;
try
{
#if DEBUG
currentInstruction = 50;
lastInstruction = 100;
#else
// Get the current position in the task sequence - will get blanks and exceptions if not in a TS
currentInstruction = int.Parse(TaskSequence.GetVariable("_SMSTSNextInstructionPointer")) + 1;
lastInstruction = int.Parse(TaskSequence.GetVariable("_SMSTSInstructionTableSize")) + 1;
#endif
if (currentInstruction > lastInstruction)
{
currentInstruction = lastInstruction;
}
}
catch (Exception)
{
// Error reading task sequence variables, remove progress bar
progressBar.Visible = false;
// Have we been running in a task sequence before? If so, assume that the task sequence has ended
// and close down - this prevents situations where the caller forgets to close us at the end of a TS
if (_startedInTaskSequence)
{
_eventShutdownRequested.Set();
}
return;
}
// If we reached here, we are in a task sequence, update flag
_startedInTaskSequence = true;
// If bar is not enabled then nothing else to do
if (!_progressBarEnabled)
{
progressBar.Visible = false;
return;
}
// Set percentage and make visible
progressBar.Value = 100 * currentInstruction / lastInstruction;
progressBar.Visible = true;
}