CPython3 - 'System.Reflection.Emit.TypeBuilder' was not found - Dynamo 3.0.3

[chrizzrott77]

Dynamo Version

3.0.3.7597 (Dynamo Revit 3.0.3.4605)

Host

No response

Operating System

Microsoft Windows NT 10.0.22631.0

What did you do?

try to use events subscription with CPython3

Code inside Python Code Block:

import clr clr.AddReference('System.Windows.Forms') from System.Windows.Forms import Form, TextBox, Button, DialogResult

def create_input_box():

Fenster erstellen

form = Form()
form.Text = "Input Box"
form.Width = 300
form.Height = 150

# TextBox erstellen
text_box = TextBox()
text_box.Width = 200
text_box.Top = 20
text_box.Left = 50
form.Controls.Add(text_box)

# Button erstellen
button = Button()
button.Text = "OK"
button.Width = 50
button.Top = 60
button.Left = 125

# Event-Handler für den Button
def on_button_click(sender, e):
    form.DialogResult = DialogResult.OK
    form.Close()

button.Click += on_button_click
form.Controls.Add(button)

# Dialog anzeigen
form.ShowDialog()

return text_box.Text

Text von der Eingabe-Box holen

input_text = create_input_box()

Dynamo Output

OUT = input_text

What did you expect to see?

not an error

What did you see instead?

Python Error:

What packages or external references (if any) were used?

No response

Stack Trace

No response

Details

Related Issue: https://github.com/DynamoDS/DynamoRevit/issues/3008#issue-1994713029

CLR: 8.0.6

[github-actions[bot]]

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[avidit]

@chrizzrott77 Can you try this on https://github.com/DynamoDS/Dynamo/releases/tag/3.2.1

[Narimannp]

Has anyone found a solution for this? this issue arises when updating from 2.18, 2.19 .

[avidit]

@Narimannp Can you try this on 3.2.1 (release)

If possible could you please update Revit to 2025.2 where the issue should be fixed.

[Narimannp]

I apprecite your responce. I wish i could. I need the script to work on both 2022 and 2025. Fortunantly i found a solution how to fix the issue in earlier versions.

[avidit]

That's great. Could you please share the solution you found?

[Narimannp]

Sure, it is super simple, actually you only need to install ironpython package (the version which is compatible with your dynamo version) and run the script with ironpython instead of cpython.