I'm trying to build an ArcPy tool, which will ask the user to input some information (ID, Name, Address, Zip, etc.) first. My add-in interface is shown below, and hope to implement that once the user inputs the ID, if all the other related info (Name, Address, etc.) exist in another known table, they could be shown in the following blanks at the same time, instead of letting the user type in everything.

In short, can ArcPy fill forms in the Add-in interface, not in the result window?

enter image description here

The validation works, but extremely slow when I run a search cursor in a .dbf which has more than 160,000 records. How can I improve the code below, or is there a better solution other than using python script tool? It seems the form will go through the cursor again even after I fill other unrelated blanks.

import arcpy, datetime
import os
import sys
class ToolValidator(object):
  """Class for validating a tool's parameter values and controlling
  the behavior of the tool's dialog."""

  def __init__(self):
    """Setup arcpy and the list of tool parameters."""
    self.params = arcpy.GetParameterInfo()
    fc = "C:\\test\\vectorDBO.dbf"
    field = "PARCEL"
    cursor = arcpy.SearchCursor(fc)
    row = cursor.next()
    n = 0
    while row:
        if row.getValue("PARCEL") == self.params[0].value:
            self.params[1].value = row.getValue("LASTNM")
            self.params[3].value = row.getValue("ADDRESS")
            self.params[4].value = row.getValue("CITY")
            self.params[6].value = row.getValue("ZIPCODE")
        row = cursor.next()

  def initializeParameters(self):
    """Refine the properties of a tool's parameters.  This method is
    called when the tool is opened."""
    self.params[10].value = datetime.datetime.now()

  def updateParameters(self):
    """Modify the values and properties of parameters before internal
    validation is performed.  This method is called whenever a parameter
    has been changed."""

  def updateMessages(self):
    """Modify the messages created by internal validation for each tool
    parameter.  This method is called after internal validation."""
  • 4
    Have you looked at custom tool validation? It can be used to populate fields based on other fields. – Barbarossa Jun 25 '14 at 15:51
  • 1
    You are using the old style cursor, you want to be using the new and faster searchcursor in the da module, this should resolve the speed issue. – Hornbydd Jun 26 '14 at 11:43
  • Thanks for your suggestion! I convert the table as a .csv file and use SearchCursor (arcpy.da), and it works perfectly! – Energetic Codfish Jun 26 '14 at 23:01
  • Older post, but i encountered a similar issue when i was building an addin. You will want to use the .da flavor of the searchcursor, and also use a data format that is more system friendly, like csv or xlsx. – COCO Jun 12 '16 at 13:23

I've never used Python Addins but the interface you describe is a Script Tool. A discussion about calling Script tools from Addins is found here. As @Barbarossa comments above you can use tool validation to populate the parameters. Unless there is a specific reason for creating a Python Addin I would probably stick to creating a Python Script Tool.

  • 1
    @EnergeticCodfish If this solved your problem can you click the green Accept button, please? – PolyGeo Dec 16 '14 at 0:17

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