I have built an Addin that has four combo boxes and a button. combo box 1 provides a list of layers in the TOC (working) combo box 2 takes user text input for a unique ID field (working) combo box 3 provides a drop down with a list that displays all the fields in the selected layer (from combo box 1) combo box 4 will provide a list of all the values for the selected field (from combo box 3) Combo box 4 is broken, and when I click in the drop down window the python windows displays the following error: >>> AttributeError: value >>> The scripting is posted below. I can add the rest if needed. Thank you all very much for the assistance. class ComboBoxClass3(object): """Implementation for SecureSurveyDefinitionQuery.toolbar_1 (ComboBox)""" def __init__(self): self.editable = True self.enabled = True self.dropdownWidth = 'WWWWWWWWWWWWWWWWWW' self.width = 'WWW' def onFocus(self, focused): if focused: values = [row[0] for row in arcpy.da.SearchCursor(LayerName, attName)] uniqueValues = set(values) self.items = [] for uniqueValue in uniqueValues: self.items.append(uniqueValue) pass def onSelChange(self, selection): global SurveyCode val = (self.items, selection)[1] SurveyCode = str(val) field = '"SURVEY_FILE_ID"' queryStr = str(field) + "= " + str(Survey_File_ID) + " AND " + '"' + str(attName) + '"' + " =" + "'" + str(SurveyCode) + "'" mxd = arcpy.mapping.MapDocument("CURRENT") df = arcpy.mapping.ListDataFrames(mxd, "Layers")[0] for lyr in arcpy.mapping.ListLayers(mxd, LayerName, df): if lyr.supports("DEFINITIONQUERY"): lyr.definitionQuery = queryStr arcpy.RefreshActiveView() del mxd
... View more