Dropdown nodes

Civil3D
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1

Hello, How to create dropdown nodes? I would like create dropdown nodes from pipe part. Like this one:

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image524×832 51.6 KB

2

look at this

3

Hi @p.da,

If you want to create a dropdown list that is dynamically populated with information from the document, then you’ll need to build a custom node or look into a third-party package.

If the list of options in the dropdown is fixed, you could use the Custom Selection node. This was introduced in Dynamo Core 2.16 and is available in Civil 3D 2024 onwards.

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image338×380 7.3 KB

1 Like
4

thanks, I would like have three dropdown lists:
First: ‘Part List’, next ‘Structure/Pipe Familles’ and next “Part Size”.
The choice of the next one would depend on the choice of the previous one.

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image1773×1064 177 KB

5

Currently there is no mechanism available to populate dropdowns with the output values of another node. You would need to build your own custom nodes for this, or explore third-party packages to see if any provide this capability.

6

Ok, thanks for explanation . That node would be very useful to dynamo player.

7

You could use winform in a Python node:

import clr
clr.AddReference("System.Windows.Forms")
clr.AddReference("System.Drawing")
import System
from System.Windows.Forms import *
from System.Drawing import *

Answers = ["Yes", "No"]

class CreateWindow(Form):
    def __init__(self):
        self.Name = "Create Window"
        self.Text = "Lovely moose"
        self.Size = Size(370, 270)
        self.CenterToScreen()
        
        label = Label()
        label.Text = "Do you like moose?"
        label.Parent = self
        label.Location = Point(20, 20)
        label.Height = 50
        label.Width = 320
        label.ForeColor = Color.Red
        label.Font = Font("Arial", 12)

        # drop down
        self.ComboBox = ComboBox()
        self.ComboBox.Parent = self
        self.ComboBox.DropDownStyle = ComboBoxStyle.DropDownList
        for i, key in enumerate(Answers):        
            self.ComboBox.Items.Add(key)

        self.ComboBox.Location = Point(200, 70)
        self.ComboBox.Width = 120
        self.ComboBox.ItemHeight = 10
        self.ComboBox.Font = Font(self.ComboBox.Font.Name, 11)  # Font Size
        self.ComboBox.SelectedIndex = 0
        self.ComboBox.MaxDropDownItems = 5

        # Create Bottom Line
        self.bottom_line = Label()
        self.bottom_line.Parent = self
        self.bottom_line.Location = Point(0 , 170)
        self.bottom_line.Size = Size(350, 3)
        self.bottom_line.BorderStyle = BorderStyle.FixedSingle
        self.bottom_line.ForeColor = Color.Black

        self.button2 = Button()
        self.button2.Parent = self
        self.button2.Text = "Moose!"
        self.button2.Font = Font("Arial", 11)
        self.button2.Location = Point(20,  180)
        self.button2.Width = 100
        self.button2.Height = 40
        self.button2.Click += self.ButtonClicked
        self.button2.BackColor = Color.Red
        self.button2.ForeColor = Color.White
        
        # Make the form always on top + set the size
        self.TopMost = True
        
    def ButtonClicked(self, sender, args):
        if sender == self.button2:  # Cancel
            self.value = self.ComboBox.SelectedItem
            self.Close()


form = CreateWindow()
Application.Run(form)
OUT = form.value
8

You mentioned about Data Shapes package, it can be useful for this case?
I don’t know this add-on.