Hi Guys,
I am currently trying to find out how to get return back value from python tool box.
Below is the snippet of Python and C#, not sure why when I run the code whole ArcGIS pro hang.
I have done similar way before but working properly but not sure why it is happening with these.
Python snippet (ouputLayerInfo value is the one want to return to c# side)
import arcpy
import json
import sys
class Toolbox(object):
def __init__(self):
"""Define the toolbox (the name of the toolbox is the name of the
.pyt file)."""
self.label = "Toolbox"
self.alias = ""
self.tools = [GetLayerDataConnections]
class GetLayerDataConnections(object):
def __init__(self):
"""Define the tool (tool name is the name of the class)."""
self.label = "GetLayerDataConnections"
self.description = "Get Layer Data Connections"
self.canRunInBackground = True
def getParameterInfo(self):
"""Define parameter definitions"""
param0 = arcpy.Parameter(
displayName="Layer File Location",
name="Layerfile_location",
datatype="GPString",
parameterType="Required",
direction="Input")
params = [param0]
return params
def isLicensed(self):
"""Set whether tool is licensed to execute."""
return True
def updateParameters(self, parameters):
"""Modify the values and properties of parameters before internal
validation is performed. This method is called whenever a parameter
has been changed."""
return
def updateMessages(self, parameters):
"""Modify the messages created by internal validation for each tool
parameter. This method is called after internal validation."""
return
def execute(self, parameters, messages):
layerfileLocation = parameters[0].valueAsText
ouputLayerInfo = []
aLayerFile = arcpy.mp.LayerFile(layerfileLocation)
layerList = aLayerFile.listLayers()
for lyr in layerList:
if lyr.supports("DATASOURCE"):
conProp = lyr.connectionProperties
name = lyr.name
tmpStr = ("{LayerName:'"+name+"',ConnectionProperties:"+ json.dumps(conProp)+"}")
ouputLayerInfo.append(tmpStr)
return
c# snippet
private void GetLayerDataSourceInfo(string layerfilePath, string toolboxPath)
{
try
{
var ps = new ProgressorSource("Start retrieving datasource.....");
var arguments = Geoprocessing.MakeValueArray(layerfilePath);
var gpResult = Geoprocessing.ExecuteToolAsync(toolboxPath, arguments);
using (var progress = new ProgressDialog("Retrieving datasources"))
{
var status = new ProgressorSource(progress);
progress.Show();
gpResult.Wait();
progress.Hide();
}
IGPResult ProcessingResult = gpResult.Result;
if (ProcessingResult.IsFailed)
{
string errorMessage = "";
foreach (IGPMessage gpMessage in ProcessingResult.Messages)
{
errorMessage += $"{{Error Code: {gpMessage.ErrorCode}, Text : {gpMessage.Text} }}";
}
MessageBox.Show($"Geoprocessing fail {Environment.NewLine}{errorMessage}");
}
else
{
string outvalue = ProcessingResult.ReturnValue;
Console.WriteLine(outvalue);
MessageBox.Show($"Return value {Environment.NewLine}" + outvalue);
}
}
catch (Exception exce)
{
}
}
Uma Harano, Wolfgang Kaiser
