Script Manager vs. User Model Script Editor

[Mohammad]

Is there any difference between Script Manager and User Model Script Editor?

I assume the User Model Script Editor is linked to a User Model Unit operation by default and you can read inlet ports, write to outlet ports and calculate it!

On the other side the Script Manager lets you freely do calculation on any or all objects in DWSIM simulation and still you can link to a specific object!

So, my question is: Can I use the two environments through Python Bridge (e.g. Python.NET) and do calculation? DWSIM allows me to use Python.NET in both environment but it seems there is limitation in Script Manager, is this true?

[Mohammad]

More Inputs

• I set the Python Bridge

• I use Python.NET everywhere

• DWSIM 6.5.3

• Windows 10
• Classic UI
• Python 3.8

PART i: User Model
If I use the below code in User Model Script Editor

import numpy as np
import scipy as sp
from matplotlib import pyplot as plt

x=np.linspace(0, np.pi)
y=np.sin(x)

Flowsheet.WriteMessage("Solved ...")

plt.plot(x,y)
plt.show()

It works like a charm and show the plot!

PART ii

If I use the above code (just copy paste) in Script Manager then I get the below error

System.AggregateException: One or more errors occurred. ---> System.InvalidOperationException: Cross-thread operation not valid: Control '' accessed from a thread other than the thread it was created on.
   at System.Windows.Forms.Control.get_Handle()
   at System.Windows.Forms.ScrollBar.UpdateScrollInfo()
   at System.Windows.Forms.ScrollBar.set_Maximum(Int32 value)
   at System.Windows.Forms.DataGridView.ComputeLayoutShortcut(Boolean computeVisibleRows)
   at System.Windows.Forms.DataGridView.PerformLayoutPrivate(Boolean useRowShortcut, Boolean computeVisibleRows, Boolean invalidInAdjustFillingColumns, Boolean repositionEditingControl)
   at System.Windows.Forms.DataGridView.ResetUIState(Boolean useRowShortcut, Boolean computeVisibleRows)
   at System.Windows.Forms.DataGridViewRowCollection.OnCollectionChanged_PreNotification(CollectionChangeAction cca, Int32 rowIndex, Int32 rowCount, DataGridViewRow& dataGridViewRow, Boolean changeIsInsertion)
   at System.Windows.Forms.DataGridViewRowCollection.OnCollectionChanged(CollectionChangeEventArgs e, Int32 rowIndex, Int32 rowCount)
   at System.Windows.Forms.DataGridViewRowCollection.AddInternal(Boolean newRow, Object[] values)
   at DWSIM.FormFlowsheet.WriteToLog(String texto, Color cor, MessageType tipo, String exceptionID) in C:\Users\Daniel\source\repos\DanWBR\dwsim6\DWSIM\Forms\Flowsheet\FormFlowsheet.vb:line 805
   at DWSIM.FormScript._Closure$__234-0._Lambda$__2() in C:\Users\Daniel\source\repos\DanWBR\dwsim6\DWSIM\Forms\FormScript.vb:line 322
   at System.Threading.Tasks.Task.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at DWSIM.FormScript.RunScript_PythonNET(String scripttext, FormFlowsheet fsheet) in C:\Users\Daniel\source\repos\DanWBR\dwsim6\DWSIM\Forms\FormScript.vb:line 332
   at DWSIM.FormScript.Button1_Click(Object sender, EventArgs e) in C:\Users\Daniel\source\repos\DanWBR\dwsim6\DWSIM\Forms\FormScript.vb:line 169
   at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
   at System.Windows.Forms.ToolStripButton.OnClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
   at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ToolStrip.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
---> (Inner Exception #0) System.InvalidOperationException: Cross-thread operation not valid: Control '' accessed from a thread other than the thread it was created on.
   at System.Windows.Forms.Control.get_Handle()
   at System.Windows.Forms.ScrollBar.UpdateScrollInfo()
   at System.Windows.Forms.ScrollBar.set_Maximum(Int32 value)
   at System.Windows.Forms.DataGridView.ComputeLayoutShortcut(Boolean computeVisibleRows)
   at System.Windows.Forms.DataGridView.PerformLayoutPrivate(Boolean useRowShortcut, Boolean computeVisibleRows, Boolean invalidInAdjustFillingColumns, Boolean repositionEditingControl)
   at System.Windows.Forms.DataGridView.ResetUIState(Boolean useRowShortcut, Boolean computeVisibleRows)
   at System.Windows.Forms.DataGridViewRowCollection.OnCollectionChanged_PreNotification(CollectionChangeAction cca, Int32 rowIndex, Int32 rowCount, DataGridViewRow& dataGridViewRow, Boolean changeIsInsertion)
   at System.Windows.Forms.DataGridViewRowCollection.OnCollectionChanged(CollectionChangeEventArgs e, Int32 rowIndex, Int32 rowCount)
   at System.Windows.Forms.DataGridViewRowCollection.AddInternal(Boolean newRow, Object[] values)
   at DWSIM.FormFlowsheet.WriteToLog(String texto, Color cor, MessageType tipo, String exceptionID) in C:\Users\Daniel\source\repos\DanWBR\dwsim6\DWSIM\Forms\Flowsheet\FormFlowsheet.vb:line 805
   at DWSIM.FormScript._Closure$__234-0._Lambda$__2() in C:\Users\Daniel\source\repos\DanWBR\dwsim6\DWSIM\Forms\FormScript.vb:line 322
   at System.Threading.Tasks.Task.Execute()<---

Question: Is there any limitation with Script Manager?

[Daniel Medeiros]

this is a bug. I'll investigate.

[Mohammad]

Hi Daniel,
It would be much appreciated if you notify me when you had any solution for this!

Best wishes