DataDebugMethods.ProgBar.IncrementProgress C# (CSharp) Method

        public void IncrementProgress()
        {
            // if this method is called from any thread other than
            // the GUI thread, call the method on the correct thread
            if (progressBar1.InvokeRequired)
            {
                progressBar1.Invoke(new MethodInvoker(() => IncrementProgress()));
                return;
            }

            if (!_max_set)
            {
                throw new ProgressMaxUnsetException();
            }

            if (_count < 0)
            {
                progressBar1.Value = 0;
            }
            else if (_count > progressBar1.Maximum)
            {
                progressBar1.Value = progressBar1.Maximum;
            }
            else
            {
                progressBar1.Value = (int)(_count);
            }
            _count++;
        }

        public static PrepData PrepSimulation(Excel.Application app, Excel.Workbook wbh, ProgBar pb, bool ignore_parse_errors)
        {
            // build graph
            var dag = new DAG(wbh, app, ignore_parse_errors);
            if (dag.containsLoop())
            {
                throw new DataDebugMethods.ContainsLoopException();
            }
            pb.IncrementProgress();

            // get terminal input and terminal formula nodes once
            var terminal_input_nodes = dag.terminalInputVectors();
            var terminal_formula_nodes = dag.terminalFormulaNodes(true);  ///the boolean indicates whether to use all outputs or not

            if (terminal_input_nodes.Length == 0)
            {
                throw new NoRangeInputs();
            }

            if (terminal_formula_nodes.Length == 0)
            {
                throw new NoFormulas();
            }

            // save original spreadsheet state
            CellDict original_inputs = UserSimulation.Utility.SaveInputs(dag);

            // force a recalculation before saving outputs, otherwise we may
            // erroneously conclude that the procedure did the wrong thing
            // based solely on Excel floating-point oddities
            UserSimulation.Utility.InjectValues(app, wbh, original_inputs);

            // save function outputs
            CellDict correct_outputs = UserSimulation.Utility.SaveOutputs(terminal_formula_nodes, dag);

            return new PrepData()
            {
                dag = dag,
                original_inputs = original_inputs,
                correct_outputs = correct_outputs,
                terminal_input_nodes = terminal_input_nodes,
                terminal_formula_nodes = terminal_formula_nodes
            };
        }